Cambium Networks PTP 550E Series User manual

USER GUIDE
PTP 550/550E
Series
System Release 4.5

pmp-2038_001v000
Accuracy
While reasonable efforts have been made to assure the accuracy of this document, Cambium Networks assumes no
liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained
herein. Cambium reserves the right to make changes to any products described herein to improve reliability,
function, or design, and reserves the right to revise this document and to make changes from time to time in
content hereof with no obligation to notify any person of revisions or changes. Cambium does not assume any
liability arising out of the application or use of any product, software, or circuit described herein; neither does it
convey license under its patent rights or the rights of others. It is possible that this publication may contain
references to, or information about Cambium products (machines and programs), programming, or services that
are not announced in your country. Such references or information must not be construed to mean that Cambium
intends to announce such Cambium products, programming, or services in your country.
Copyrights
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describe copyrighted Cambium and other 3rd Party supplied computer programs stored in semiconductor memories
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Cambium products described in this document may not be copied, reproduced, reverse engineered, distributed,
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license under the copyrights, patents or patent applications of Cambium or other 3rd Party supplied software,
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Restrictions
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of Cambium.
License Agreements
The software described in this document is the property of Cambium and its licensors. It is furnished by express
license agreement only and may be used only in accordance with the terms of such an agreement.
High Risk Materials
Cambium and its supplier(s) specifically disclaim any express or implied warranty of fitness for any high risk
activities or uses of its products including, but not limited to, the operation of nuclear facilities, aircraft navigation
or aircraft communication systems, air traffic control, life support, or weapons systems (“High Risk Use”). Any High
Risk is unauthorized, is made at your own risk and you shall be responsible for any and all losses, damage or claims
arising out of any High Risk Use.
© 2019 Cambium Networks Limited. All Rights Reserved.

Page i
Contents
About This User Guide .....................................................................................................................................1
Contacting Cambium Networks ............................................................................................................... 1
Purpose ....................................................................................................................................................1
Cross references.......................................................................................................................................2
Feedback ..................................................................................................................................................2
Important regulatory information ................................................................................................................... 3
USA specific information .......................................................................................................................... 3
Canada specific information.....................................................................................................................3
Renseignements specifiques au Canada ..................................................................................................4
EU Declaration of Conformity ..................................................................................................................4
Application firmware................................................................................................................................4
Specific expertise and training for professional installers........................................................................ 5
External antennas..................................................................................................................................... 5
Antennas externes ................................................................................................................................... 5
Ethernet networking skills........................................................................................................................5
Lightning protection .................................................................................................................................5
Training..................................................................................................................................................... 6
Problems and warranty ................................................................................................................................... 7
Reporting problems.................................................................................................................................. 7
Repair and service .................................................................................................................................... 7
Hardware warranty ..................................................................................................................................7
Security advice.................................................................................................................................................8
Warnings, cautions, and notes ........................................................................................................................9
Warnings .................................................................................................................................................. 9
Cautions.................................................................................................................................................... 9
Notes ........................................................................................................................................................ 9
Caring for the environment ...........................................................................................................................10
In EU countries .......................................................................................................................................10
In non-EU countries................................................................................................................................10
Chapter 1: Product description.................................................................................................................1-1
Overview of the PTP 550/550E Series...........................................................................................................1-2
Purpose .................................................................................................................................................1-2
Key features...........................................................................................................................................1-2
Frequency bands ...................................................................................................................................1-3
Typical bridge deployment....................................................................................................................1-4
Hardware overview ...............................................................................................................................1-5
Wireless operation........................................................................................................................................1-7
Channel Bonding ...................................................................................................................................1-7
Dynamic Channel Selection ...................................................................................................................1-7
Time-division duplexing.........................................................................................................................1-8

Contents
Page ii
Link Scheduler .....................................................................................................................................1-10
OFDM and channel bandwidth ...........................................................................................................1-10
Adaptive modulation...........................................................................................................................1-10
MIMO ..................................................................................................................................................1-11
DFS Tuning...........................................................................................................................................1-11
Encryption ...........................................................................................................................................1-12
Regulatory bands.................................................................................................................................1-12
PTP networks.......................................................................................................................................1-13
Ethernet bridging........................................................................................................................................1-14
Ethernet ports .....................................................................................................................................1-14
Data network.......................................................................................................................................1-14
Protocol model....................................................................................................................................1-14
Quality of Service (QoS).......................................................................................................................1-15
System management ..................................................................................................................................1-16
Management agent .............................................................................................................................1-16
Network management ........................................................................................................................1-17
SNMP...................................................................................................................................................1-18
Network Time Protocol (NTP) .............................................................................................................1-18
Trial Config ..........................................................................................................................................1-19
System logging (syslog) .......................................................................................................................1-20
Software upgrade................................................................................................................................1-20
cnMaestro Zero-Touch ........................................................................................................................1-21
Chapter 2: System hardware ....................................................................................................................2-1
Outdoor unit (ODU) ......................................................................................................................................2-2
ODU description ....................................................................................................................................2-2
PTP 550/550E Integrated ODU..............................................................................................................2-2
PTP 550/550E Connectorized ODU .......................................................................................................2-3
ODU accessories....................................................................................................................................2-5
Mounting bracket..................................................................................................................................2-5
ODU interfaces ......................................................................................................................................2-6
ODU specifications ................................................................................................................................2-8
Power supply units (PSU)..............................................................................................................................2-9
PSU description .....................................................................................................................................2-9
PSU part numbers ...............................................................................................................................2-10
AC Power Injector interfaces...............................................................................................................2-10
PSU specifications ...............................................................................................................................2-11
Antennas and antenna cabling ...................................................................................................................2-12
Antenna requirements ........................................................................................................................2-12
RF cable and connectors .....................................................................................................................2-12
Antenna accessories............................................................................................................................2-12
Ethernet cabling..........................................................................................................................................2-13
Ethernet standards and cable lengths.................................................................................................2-13
Outdoor copper Cat5e Ethernet cable ................................................................................................2-14
Cable grounding kit .............................................................................................................................2-15
RJ45 connectors and spare glands ......................................................................................................2-16
Cable hoisting grip...............................................................................................................................2-16

Contents
Page iii
Drop cable tester.................................................................................................................................2-17
Indoor Cat5e cable ..............................................................................................................................2-17
SFP module kits ...................................................................................................................................2-17
Optical cable and connectors ..............................................................................................................2-19
Surge suppression unit ...............................................................................................................................2-20
Gigabit Ethernet Surge Suppressor .....................................................................................................2-20
Chapter 3: System planning....................................................................................................................3-21
Site planning ...............................................................................................................................................3-22
Grounding and lightning protection....................................................................................................3-22
Lightning protection zones..................................................................................................................3-22
Site grounding system.........................................................................................................................3-23
ODU and external antenna location....................................................................................................3-24
ODU wind loading ...............................................................................................................................3-24
PSU AC power supply ..........................................................................................................................3-25
PSU location ........................................................................................................................................3-25
Drop cable grounding points...............................................................................................................3-25
Radio spectrum planning ............................................................................................................................3-26
General wireless specifications ...........................................................................................................3-26
Regulatory limits .................................................................................................................................3-27
Conforming to the limits .....................................................................................................................3-27
Available spectrum..............................................................................................................................3-27
Channel bandwidth .............................................................................................................................3-28
Link planning...............................................................................................................................................3-29
LINKPlanner.........................................................................................................................................3-29
Range and obstacles............................................................................................................................3-29
Path loss ..............................................................................................................................................3-29
Adaptive modulation...........................................................................................................................3-30
Planning for connectorized units ................................................................................................................3-31
When to install connectorized units ...................................................................................................3-31
Choosing external antennas................................................................................................................3-31
Data network planning ...............................................................................................................................3-33
Ethernet interfaces..............................................................................................................................3-33
IP interface ..........................................................................................................................................3-33
Green Ethernet switches.....................................................................................................................3-33
Network management planning .................................................................................................................3-34
Enabling SNMP ....................................................................................................................................3-34
Security planning ........................................................................................................................................3-35
Planning for NTP operation.................................................................................................................3-35
System threshold ........................................................................................................................................3-36
Chapter 4: Legal and regulatory information ............................................................................................4-1
Cambium Networks end user license agreement.........................................................................................4-2
Definitions .............................................................................................................................................4-2
Acceptance of this agreement ..............................................................................................................4-2
Grant of license .....................................................................................................................................4-2
Conditions of use...................................................................................................................................4-3
Title and restrictions..............................................................................................................................4-4

Contents
Page iv
Confidentiality .......................................................................................................................................4-4
Right to use Cambium’s name...............................................................................................................4-5
Transfer .................................................................................................................................................4-5
Updates .................................................................................................................................................4-5
Maintenance .........................................................................................................................................4-5
Disclaimer..............................................................................................................................................4-6
Limitation of liability..............................................................................................................................4-6
U.S. government....................................................................................................................................4-6
Term of license ......................................................................................................................................4-7
Governing law .......................................................................................................................................4-7
Assignment............................................................................................................................................4-7
Survival of provisions.............................................................................................................................4-7
Entire agreement ..................................................................................................................................4-7
Third-party software .............................................................................................................................4-7
Source Code Requests...........................................................................................................................4-7
Compliance with safety standards..............................................................................................................4-63
Electrical safety compliance ................................................................................................................4-63
Electromagnetic compatibility (EMC) compliance ..............................................................................4-63
Human exposure to radio frequency energy ......................................................................................4-63
Compliance with radio regulations.............................................................................................................4-68
Type approvals ....................................................................................................................................4-69
FCC/IC compliance...............................................................................................................................4-70
European Union compliance ...............................................................................................................4-71
Chapter 5: Installation ..............................................................................................................................5-1
Safety ............................................................................................................................................................5-2
Power lines ............................................................................................................................................5-2
Working at heights ................................................................................................................................5-2
PSU ........................................................................................................................................................5-2
Grounding and protective earth............................................................................................................5-2
Powering down before servicing...........................................................................................................5-2
Primary disconnect device ....................................................................................................................5-2
External cables ......................................................................................................................................5-3
Drop cable tester...................................................................................................................................5-3
RF exposure near the antenna ..............................................................................................................5-3
Minimum separation distances.............................................................................................................5-3
Grounding and lightning protection requirements...............................................................................5-3
Grounding cable installation methods ..................................................................................................5-3
Siting ODUs and antennas.....................................................................................................................5-4
Thermal Safety ......................................................................................................................................5-4
Installing the ODU.........................................................................................................................................5-5
Attach ground cables to the ODU .........................................................................................................5-5
Mount the ODU on the mast.................................................................................................................5-5
Install external antennas for a connectorized ODU ..............................................................................5-8
Installing the copper Cat5e Ethernet interface.............................................................................................5-9
Install the main drop cable....................................................................................................................5-9
Test resistance in the drop cable ........................................................................................................5-11

Contents
Page v
Installing the PSU ........................................................................................................................................5-13
Installing the AC Power Injector..........................................................................................................5-13
Installing an SFP Ethernet interface............................................................................................................5-14
Fitting the long cable gland .................................................................................................................5-16
Inserting the SFP module ....................................................................................................................5-17
Connecting the cable...........................................................................................................................5-20
Fitting the gland ..................................................................................................................................5-21
Removing the cable and SFP module ..................................................................................................5-22
Supplemental installation information .......................................................................................................5-23
Stripping drop cable ............................................................................................................................5-23
Creating a drop cable grounding point................................................................................................5-24
Weatherproofing an N type connector...............................................................................................5-27
Chapter 6: Configuration and alignment...................................................................................................6-1
Preparing for configuration and alignment ..................................................................................................6-2
Safety precautions.................................................................................................................................6-2
Regulatory compliance..........................................................................................................................6-2
Selecting configuration options.............................................................................................................6-2
Connecting to the unit ..................................................................................................................................6-3
Configuring the management PC ..........................................................................................................6-3
Connecting to the PC and powering up.................................................................................................6-4
Using the web interface................................................................................................................................6-5
Logging into the web interface..............................................................................................................6-5
Using the installation wizard (Master Mode) ...............................................................................................6-6
Installation wizard step 1 – Main system parameters ..........................................................................6-6
Installation wizard step 2 – Radio parameters......................................................................................6-7
Installation wizard step 3 – Network parameters .................................................................................6-8
Installation wizard step 4 – Security parameters ..................................................................................6-9
Using the installation wizard (Slave Mode) ................................................................................................6-11
Installation wizard step 1 – Main system parameters ........................................................................6-11
Installation wizard step 2 – Radio parameters....................................................................................6-12
Installation wizard step 3 – Network parameters ...............................................................................6-13
Installation wizard step 4 – Security parameters ................................................................................6-14
Using the menu options..............................................................................................................................6-15
Status page..........................................................................................................................................6-16
Installation page..................................................................................................................................6-18
Configuration menu ............................................................................................................................6-19
Monitor menu .....................................................................................................................................6-38
Tools menu..........................................................................................................................................6-51
Other configuration tasks ...........................................................................................................................6-61
Connecting to the network .................................................................................................................6-61
Chapter 7: Operation and Troubleshooting ............................................................................................7-62
General Planning for Troubleshooting........................................................................................................7-63
General Fault Isolation Process...........................................................................................................7-63
Questions to Help Isolate the Problem ...............................................................................................7-64
Upgrading device software .........................................................................................................................7-65
Testing hardware ........................................................................................................................................7-66

Contents
Page vi
Checking the power supply LED ..........................................................................................................7-66
Power LED is off...................................................................................................................................7-66
Ethernet LED is off...............................................................................................................................7-66
Troubleshooting the radio link....................................................................................................................7-69
The module has lost or does not establish radio connectivity............................................................7-69
Link is unreliable or does not achieve data rates required .................................................................7-69
Using the device external reset button ......................................................................................................7-70
Resetting ODU to factory defaults by power cycling..................................................................................7-71
Glossary...........................................................................................................................................................II

Page 1
About This User Guide
This guide describes the planning, installation, configuration and operation of the Cambium PTP 550/550E
Series of point-to-point wireless Ethernet bridges. It is intended for use by the system designer, system
installer and system administrator.
For radio network design, refer to the following chapters:
•Chapter 1: Product description
•Chapter 2: System hardware
•Chapter 3: System planning
•Chapter 4: Legal and regulatory information
For radio equipment installation, refer to the following chapter:
•Chapter 5: Installation
For system configuration, monitoring and fault-finding, refer to the following chapter:
•Chapter 6: Configuration and alignment
Contacting Cambium Networks
Support website: http://www.cambiumnetworks.com/support
Main website: http://www.cambiumnetworks.com
Sales enquiries: [e-mail]
Support enquiries: [e-mail]
Telephone number list: http://www.cambiumnetworks.com/contact
Address: Cambium Networks Limited,
Linhay Business Park,
Eastern Road,
Ashburton,
Devon, UK,
TQ13 7UP
Purpose
Cambium Networks Point-To-Point (PTP) documents are intended to instruct and assist personnel in the
operation, installation and maintenance of the Cambium PTP equipment and ancillary devices. It is
recommended that all personnel engaged in such activities be properly trained.
Cambium disclaims all liability whatsoever, implied or express, for any risk of damage, loss or reduction in
system performance arising directly or indirectly out of the failure of the customer, or anyone acting on the
customer's behalf, to abide by the instructions, system parameters, or recommendations made in this
document.

About This User Guide Important regulatory information
Page 2
Cross references
References to external publications are shown in italics. Other cross references, emphasized in blue text in
electronic versions, are active links to the references.
This document is divided into numbered chapters that are divided into sections. Sections are not numbered,
but are individually named at the top of each page, and are listed in the table of contents.
Feedback
We appreciate feedback from the users of our documents. This includes feedback on the structure, content,
accuracy, or completeness of our documents. Send feedback to [e-mail].

About This User Guide Important regulatory information
Page 3
Important regulatory information
The PTP 550/550E product is certified as an unlicensed device in frequency bands where it is not allowed to
cause interference to licensed services (called primary users of the bands).
USA specific information
Caution
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
•This device may not cause harmful interference, and
•This device must accept any interference received, including interference that may cause
undesired operation.
The USA Federal Communications Commission (FCC) requires manufacturers to implement special features to
prevent interference to radar systems that operate in the band 5470 MHz to 5725 MHz. These features must
be implemented in all products able to operate outdoors in this band.
Manufacturers must ensure that such radio products cannot be configured to operate outside of FCC rules;
specifically it must not be possible to disable or modify the radar protection functions that have been
demonstrated to the FCC.
Other variants of the PTP 550/550E are available for use in the rest of the world, but these variants are not
supplied to the USA except under strict controls, when they are needed for export and deployment outside the
USA.
Canada specific information
Caution
This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the
following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Industry Canada requires manufacturers to implement special features to prevent interference to weather
radar systems that operate in the band 5600 MHz to 5650 MHz. These features must be implemented in all
products able to operate outdoors in the band 5470 MHz to 5725 MHz.
Manufacturers must ensure that such radio products cannot be configured to operate outside of IC rules;
specifically it must not be possible to disable or modify the radar protection functions that have been
demonstrated to IC.
In order to comply with these IC requirements, Cambium supplies variants of the PTP 550/550E for operation
in Canada. In particular, operation of radio channels overlapping the band 5600 MHz to 5650 MHz is not
allowed and these channels are permanently barred.

About This User Guide Important regulatory information
Page 4
In addition, other channels may also need to be barred when operating close to weather radar installations.
Other variants of the PTP 550/550E are available for use in the rest of the world, but these variants are not
supplied to Canada except under strict controls, when they are needed for export and deployment outside
Canada.
Renseignements specifiques au Canada
Attention
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage
est susceptible d'en compromettre le fonctionnement.
Industry Canada (IC) a demandé aux fabricants de mettre en œuvre des mécanismes spécifiques pour éviter
d’interférer avec des systèmes radar fonctionnant dans la bande 5600 MHz à 5650 MHz. Ces mécanismes
doivent être mis en œuvre dans tous les produits capables de fonctionner à l'extérieur dans la bande 5470
MHz à 5725 MHz.
Les fabricants doivent s'assurer que les produits de radiocommunications ne peuvent pas être configurés pour
fonctionner en dehors des règles IC, en particulier, il ne doit pas être possible de désactiver ou modifier les
fonctions de protection des radars qui ont été démontrés à IC.
Afin de se conformer à ces exigences de IC, Cambium fournit des variantes du PTP 550/550E exclusivement
pour le Canada. Ces variantes ne permettent pas à l’équipement de fonctionner en dehors des règles de IC. En
particulier, le fonctionnement des canaux de radio qui chevauchent la bande 5600 MHz à 5650 MHz est
interdite et ces canaux sont définitivement exclus.
EU Declaration of Conformity
Hereby, Cambium Networks declares that the Cambium PTP 550/550E Series Wireless Ethernet Bridge
complies with the essential requirements and other relevant provisions of Directive 1999/5/EC. The
declaration of conformity may be consulted at:
http://www.cambiumnetworks.com/support/ec-doc
Application firmware
Download the latest PTP 550/550E Series firmware and install it in the Outdoor Units (ODUs) before deploying
the PTP 550/550E equipment. Instructions for installing firmware are provided in Upgrading device software
on page 7-65.

About This User Guide Important regulatory information
Page 5
Specific expertise and training for professional installers
To ensure that the PTP 550/550E is installed and configured in compliance with the requirements of Industry
Canada and the FCC, installers must have the radio engineering skills and training described in this section. This
is particularly important when installing and configuring a PTP 550/550E system for operation in the 5.1 GHz
and 5.4 GHz UNII bands.
External antennas
When using a connectorized version of the product (as compared to the version with an integrated antenna),
the conducted transmit power may need to be reduced to ensure the regulatory limit on transmitter EIRP is
not exceeded. The installer must have an understanding of how to compute the effective antenna gain from
the actual antenna gain and the feeder cable losses.
The ranges of permissible values for maximum antenna gain and feeder cable losses are included in this user
guide together with a sample calculation. The product GUI automatically applies the correct conducted power
limit to ensure that it is not possible for the installation to exceed the EIRP limit, when the appropriate values
for antenna gain and feeder cable losses are entered into the GUI.
Antennas externes
Lorsque vous utilisez une version du produit sans antenne intégrée, il peut être nécessaire de réduire la
puissance d'émission pour garantir que la limite réglementaire de puissance isotrope rayonnée équivalente
(PIRE) n'est pas dépassée. L'installateur doit avoir une bonne compréhension de la façon de calculer le gain de
l'antenne de gain de l'antenne réelle et les pertes dans les câbles de connections.
La plage de valeurs admissibles pour un gain maximal de l'antenne et des pertes de câbles de connections sont
inclus dans ce guide d'utilisation avec un exemple de calcul. L'interface utilisateur du produit applique
automatiquement la limite de puissance menée correct afin de s'assurer qu'il ne soit pas possible pour
l'installation de dépasser la limite PIRE, lorsque les valeurs appropriées pour le gain d'antenne et les pertes de
câbles d'alimentation sont entrées dans l’interface utilisateur.
Ethernet networking skills
The installer must have the ability to configure IP addressing on a PC and to set up and control products using
a web browser interface.
Lightning protection
To protect outdoor radio installations from the impact of lightning strikes, the installer must be familiar with
the normal procedures for site selection, bonding and grounding. Installation guidelines for the PTP 550/550E
can be found in Chapter 2: System hardware and Chapter 5: Installation.

About This User Guide Important regulatory information
Page 6
Training
The installer needs to have basic competence in radio and IP network installation. The specific requirements
applicable to the PTP 550/550E should be gained by reading Chapter 5: Installation and Chapter 6:
Configuration and alignment and by performing sample setups at base workshop before live deployments.

About This User Guide Problems and warranty
Page 7
Problems and warranty
Reporting problems
If any problems are encountered when installing or operating this equipment, follow this procedure to
investigate and report:
1 Search this document and the software release notes of supported releases.
2 Visit the support website.
3 Ask for assistance from the Cambium product supplier.
4 Gather information from affected units, such as any available diagnostic downloads.
5 Escalate the problem by emailing or telephoning support.
Repair and service
If unit failure is suspected, obtain details of the Return Material Authorization (RMA) process from the support
website.
Hardware warranty
Cambium’s standard hardware warranty is for one (1) year from date of shipment from Cambium Networks or
a Cambium distributor. Cambium Networks warrants that hardware will conform to the relevant published
specifications and will be free from material defects in material and workmanship under normal use and
service. Cambium shall within this time, at its own option, either repair or replace the defective product within
thirty (30) days of receipt of the defective product. Repaired or replaced product will be subject to the original
warranty period but not less than thirty (30) days.
To register PTP products or activate warranties, visit the support website. For warranty assistance, contact the
reseller or distributor.
Caution
Using non-Cambium parts for repair could damage the equipment or void warranty. Contact
Cambium for service and repair instructions.
Portions of Cambium equipment may be damaged from exposure to electrostatic discharge. Use
precautions to prevent damage.

About This User Guide Security advice
Page 8
Security advice
Cambium Networks systems and equipment provide security parameters that can be configured by the
operator based on their particular operating environment. Cambium recommends setting and using these
parameters following industry recognized security practices. Security aspects to be considered are protecting
the confidentiality, integrity, and availability of information and assets. Assets include the ability to
communicate, information about the nature of the communications, and information about the parties
involved.
In certain instances Cambium makes specific recommendations regarding security practices, however the
implementation of these recommendations and final responsibility for the security of the system lies with the
operator of the system.

About This User Guide Warnings, cautions, and notes
Page 9
Warnings, cautions, and notes
The following describes how warnings and cautions are used in this document and in all documents of the
Cambium Networks document set.
Warnings
Warnings precede instructions that contain potentially hazardous situations. Warnings are used to alert the
reader to possible hazards that could cause loss of life or physical injury. A warning has the following format:
Warning
Warning text and consequence for not following the instructions in the warning.
Cautions
Cautions precede instructions and are used when there is a possibility of damage to systems, software, or
individual items of equipment within a system. However, this damage presents no danger to personnel. A
caution has the following format:
Caution
Caution text and consequence for not following the instructions in the caution.
Notes
A note means that there is a possibility of an undesirable situation or provides additional information to help
the reader understand a topic or concept. A note has the following format:
Note
Note text.

About This User Guide Caring for the environment
Page 10
Caring for the environment
The following information describes national or regional requirements for the disposal of Cambium Networks
supplied equipment and for the approved disposal of surplus packaging.
In EU countries
The following information is provided to enable regulatory compliance with the European Union (EU)
directives identified and any amendments made to these directives when using Cambium equipment in EU
countries.
Disposal of Cambium equipment
European Union (EU) Directive 2002/96/EC Waste Electrical and Electronic Equipment (WEEE)
Do not dispose of Cambium equipment in landfill sites. For disposal instructions, refer to
http://www.cambiumnetworks.com/support/weee-compliance
Disposal of surplus packaging
Do not dispose of surplus packaging in landfill sites. In the EU, it is the individual recipient’s responsibility to
ensure that packaging materials are collected and recycled according to the requirements of EU environmental
law.
In non-EU countries
In non-EU countries, dispose of Cambium equipment and all surplus packaging in accordance with national and
regional regulations.

Page 1-1
Chapter 1: Product description
This chapter provides a high-level description of products in the PTP 550/550E series. It describes in general
terms the function of the product, the main product variants, and the main hardware components. The
following topics are described in this chapter:
•Overview of the PTP 550/550E Series on page 1-2 introduces the key features, typical uses, product
variants and components of the PTP 550/550E series.
•Wireless operation on page 1-7 describes how the PTP 550/550E wireless link is operated, including
modulation modes, power control, and spectrum management.
•Ethernet bridging on page 1-14 describes how the PTP 550/550E controls Ethernet data, in both the
customer data and system management networks.
•System management on page 1-16 introduces the PTP 550/550E management system, including the web
interface, installation, configuration, security, alerts, and upgrades.

Chapter 1: Product description Overview of the PTP 550/550E Series
Page 1-2
Overview of the PTP 550/550E Series
This section introduces the key features, typical uses, product variants and components of the PTP 550/550E
series.
Purpose
Cambium PTP 550/550E products are designed for Ethernet bridging over point-to-point links in the unlicensed
5 GHz frequency band. Users must ensure that the PTP 550/550E Series complies with local operating
regulations.
The PTP 550/550E acts as a transparent bridge between two segments of the operator’s network. In this sense,
it can be treated as a virtual wired connection between two points. The PTP 550/550E Series forwards 802.3
Ethernet frames destined for the other part of the network and filters frames it does not need to forward. The
system is transparent to higher-level protocols such as VLANs.
Key features
PTP 550/550E is a rugged high-capacity outdoor point-to-point link
wireless device in the unlicensed 5 GHz frequency bands with a maximum
UDP throughput of 1.4 Gbps (when operating with 160 MHz maximum
aggregate bandwidth). It is capable of operating in line-of-sight (LOS) and
near-LOS conditions. Its maximum LOS range is 122 miles (200 km). PTP
550/550E is available as an integrated unit with a dual-polarized 23 dBi
flat-plate antenna, and as a connectorized unit for use with a separate
dual-polarized antenna. One point-to-point link consists of two PTP
550/550E devices.
PTP 550/550E supports asymmetric dual-channel operation, with channel
sizes of 20 MHz, 40 MHz, or 80 MHz in each channel. The maximum
aggregate bandwidth is 160 MHz (two 80 MHz channels). Each channel
supports 2 x 2 MIMO operation with polarization multiplexing or
polarization diversity, resulting in a form of 4 x 4 MIMO. The dual-
channel operation uses non-contiguous channels, and the channels can
be in the same regulatory band or different regulatory bands. Channel
bandwidth can be selected independently in the two channels and
adaptive modulation also acts independently.
PTP 550/550E is based on highly-integrated wireless semiconductor
components designed to meet the IEEE 802.11ac standard, however, the
PTP 550/550E device has a proprietary air interface for the main point-to-point link.
PTP 550/550E is powered by standard power-over-Ethernet to a 1000Base-T port. The unit additionally has an
SFP port for the optional addition of a fiber or copper SFP module.
Management of the unit is conducted via the same interface as the bridged traffic (in-band Management).
A summary of the main PTP 550/550E characteristics is listed in Table 1.