Avaya IP Office H.323 User manual

15-601046 Issue 17e - (Wednesday, November 14, 2012)
H.323 Telephone Installation
IP Office

H.323 Telephone Installation Page 2
15-601046 Issue 17e (Wednesday, November 14, 2012)IP Office
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Contents
Contents
IP Office H.323 IP Phones1. ..................................................................... 81.1 Supported Phones
..................................................................... 91.2 System Capacity
..................................................................... 101.3 Phone Firmware
..................................................................... 111.4 Simple Installation
..................................................................... 121.5 Installation Requirements
..................................................................... 131.6 Licenses ..................................................................... 141.7 Network Assessment
..................................................................... 151.8 Voice Compression Channels
..................................................................... 171.9 QoS ..................................................................... 171.10 Potential VoIP Problems
..................................................................... 181.11 User PC Connection
..................................................................... 191.12 Power Supply Options
..................................................................... 211.13 File Server Options
..................................................................... 221.14 File Auto-Generation
..................................................................... 221.15 Control Unit Memory Card
Installation2. ..................................................................... 252.1 Licensing
............................................................................ 252.1.1 Checking the Serial Number
............................................................................ 262.1.2 Adding Licenses
............................................................................ 262.1.3 Reserving Licenses
..................................................................... 272.2 System H.323 Support
............................................................................ 272.2.1 Enabling the H.323 Gatekeeper
............................................................................ 282.2.2 Setting the RTP Port Range
............................................................................ 292.2.3 Enabling RTCP Quality Monitoring
............................................................................ 312.2.4 Adjusting DiffServ QoS
............................................................................ 322.2.5 System Default Codecs
..................................................................... 332.3 DHCP Settings
............................................................................ 352.3.1 System DHCP Support
............................................................................ 362.3.2 System Site Specific Option Numbers
..................................................................... 372.4 File Server Settings
............................................................................ 382.4.1 System File Server Settings
............................................................................ 392.4.2 Creating/Editing the Settings File
............................................................................ 412.4.3 Loading Software Files onto the System
............................................................................ 442.4.4 Loading Files onto a 3rd Party Server
..................................................................... 452.5 User and Extension Creation
............................................................................ 452.5.1 Auto-Creation
............................................................................ 462.5.2 Manually Creating User
............................................................................ 462.5.3 Manually Creating Extensions
..................................................................... 482.6 Phone Connection
..................................................................... 492.7 Static Address Installation
..................................................................... 512.8 Phone Registration
..................................................................... 522.9 Backup/Restore Settings
............................................................................ 532.9.1 Example File
............................................................................ 542.9.2 IIS Server Configuration
............................................................................ 542.9.3 Apache Server Configuration
..................................................................... 552.10 Listing Registered Phones
..................................................................... 552.11 Other Installation Options
............................................................................ 552.11.1 VPN Remote Phones
............................................................................ 592.11.2 VLAN and IP Phones
Static Administration Options3.
..................................................................... 67
3.1 Secondary Ethernet (Hub)/IR Interface
Enable/Disable
..................................................................... 683.2 View Details
..................................................................... 703.3 Self-Test Procedure
..................................................................... 713.4 Resetting a Phone
..................................................................... 713.5 Clearing a Phone
..................................................................... 713.6 Site Specific Option Number
Restart Scenarios4. ..................................................................... 774.1 Boot File Needs Upgrading
..................................................................... 77
4.2 No Application File or Application File Needs
Upgrading
..................................................................... 77
4.3 Correct Boot File and Application File Already
Loaded
Infrared Dialing5. ..................................................................... 815.1 Enabling the IR Port
..................................................................... 815.2 Dialing Phone Numbers
..................................................................... 825.3 Beaming Files During a Call
Alternate DHCP Server Setup6. ..................................................................... 856.1 Alternate Options
..................................................................... 866.2 Checking for DHCP Server Support
..................................................................... 866.3 Creating a Scope
..................................................................... 866.4 Adding a 242 Option
..................................................................... 876.5 Adding a 176 Option
..................................................................... 896.6 Activating the Scope
WML Server Setup7. ..................................................................... 937.1 Testing 4620 WML Browsing Using Xitami
..................................................................... 957.2 Setting the Home Page
..................................................................... 967.3 Apache Web Server WML Configuration
..................................................................... 967.4 Microsoft IIS Web Server WML Configuration
..................................................................... 977.5 Open URL Entry
...............................................................................99Index

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IP Office H.323 IP Phones
Chapter 1.

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IP Office H.323 IP Phones:
1. IP Office H.323 IP Phones
This documentation provides notes for the installation of supported Avaya IP phones onto an IP Office system. It
should be used in conjunction with the existing installation documentation for those series of phones, especially the
following:
·9600 Series IP Telephones Administrator Guide (16-300698)
·96x1 Series IP Telephones Administrator Guide (16-300699)
·1600 Series IP Telephones Administrators Guide (16-601443)
·4600 Series IP Telephone LAN Administrator Guide (555-233-507)
·DHCP versus Static IP Installation
Though static IP installation of H.323 IP phones is possible, installation using DHCP is strongly recommended. The
use of DHCP eases both the installation process and future maintenance and administration. For static installations,
following a boot file upgrade, all static address settings are lost and must be re-entered.
·Network Assessment
High quality voice transmission across an IP network requires careful assessment of many factors. Therefore:
·We strongly recommend that IP phone installation is only done by installers with VoIP experience.
·The whole customer network must be assessed for its suitability for VoIP, before installation. Avaya may
refuse to support any installation where the results of a network assessment cannot be supplied. See Network
Assessment for further details.
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1.1 Supported Phones
This documentation provides installation notes for the following Avaya IP phones supported by IP Office. Other supported
Avaya H.323 IP phones, for example DECT R4 3700 Series phones are covered by separate installation documentation.
H.323 IP
Phones
Supported
Models
802.3af PoE
Class
PC Port
IP Office
Core
Software
Class
Idle
1600
Series
1603
2
4.4W
–
4.2 Q4 2008
+.
1603SW
2
4.4W
1608
2
3.7W
1616
2
2.7W
4600
Series
4601
2
3.5W
–
3.0+
4602
1
–
–
2.1+.
4602SW
2
3.5W
4606
0
4.1W
Up to 3.2.
4610SW[1]
2
4.0W
3.0+.
4612
0
4.1W
Up to 3.2.
4620
3
4.0W
–
2.0+.
4620SW
2
–
4621SW[1]
2
5.75W
3.0+.
4624
0
4.1W
Up to 3.2.
4625
3
6.45W
3.2+
5600
Series
5601
2
3.5W
–
3.0+.
5602
1
–
–
5602SW
2
4.1W
5610SW[1]
2
3.1W
5620
3
3.6W
5621SW[1]
2
–
3.2+.
9600
Series
9620L
1
2.0W
6.0+
9620C
2
3.9W
9630G
2
4.6W
9640
2
3.9W
9640G
2
3.9W
9650
2
4.7W
9650C
2
3.7W
9608
1
2.08W
8.0+
9611G
1
2.8W
9621G
2
3.49W
9641G
2
3.44W
1.VPNremote Support
These phones can also be used with VPNremote firmware.
2.1603/1603SW
These phones require a PoE Splitter unit in order to use PoE.

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IP Office H.323 IP Phones: Supported Phones
1.2 System Capacity
System capacity encompasses the number of configurable phone extensions and the number of simultaneous IP phone
calls.
Extension Capacity
The maximum number of H.323 IP phones supported by an IP Office system is based on that system's maximum
capacity for extensions of any type as listed in the table below. To find the capacity for IP phones subtract the number of
physical non-IP extensions installed on the system, ie. extension ports on the IP Office control unit and any external
expansion modules.
IP Office Unit
Maximum
Extensions
Maximum VCM
Channels
IP500
384
128
IP500 V2
384
148
Call Capacity
There are a number of situations where the IP Office system needs to provide a voice compression channel in order for
an IP phone to make calls. These channels are provided by Voice Compression Modules (VCMs) installed in the IP Office
system. The number of VCM channels required and how long the channel is required will depend on a number of factors.
For further details see Voice Compression .
A simple summary is:
·A VCM channel is required during call setup.
·The VCM channel is released if the call is to/from another IP device using the same compression codec (the
supported VCM codecs are G.711, G.729 and G.722).
·The VCM channel is used for the duration of the call when the call is to/from/via a non-IP device (extension or
trunk line).
·It should be remembered that VCM channels are also used for calls from non-IP devices to IP lines if those are
configured in the IP Office system (IP, SIP and SES lines).
·Calls from IP phones to the IP Office voicemail server use a VCM channel.
·Note that on Small Office Edition systems with Embedded Voicemail, an additional channel is used for every
call to voicemail.
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1.3 Phone Firmware
The firmware used by Avaya IP phones is upgradeable and different releases of firmware are made available via the
Avaya support website. However, H.323 IP phones used on a IP Office system must only use the firmware supplied pre-
installed with the IP Office system or with its IP Office Manager application. Other versions of IP Phone firmware may not
have been tested specifically with IP Office systems and so should not be used unless IP Office support is specifically
mentioned in the firmware's accompanying documentation.
The firmware consists of a number of different types of files:
·xxupgrade Files
The first file that a phone requests when starting up is the xxupgrade file. This file contains a list of the phone .
bin files that are available as part of the firmware set and the version numbers of those files. If the version of a
file differs from that which the phone already has loaded, the phone will request the new file. During this process
the phone may reboot after loading each file and then request the xxupgrade.txt file again until it has updated all
its firmware, if necessary. Separate files are provided for the different phone series:
·16xxupgrade.txt
This file lists the firmware files that 1600 Series phones should load.
·46xxupgrade.scr
This file lists the firmware files that 4600 Series and 5600 Series phones should load.
·96xxupgrade.txt
This file lists the firmware files that 9600 Series phones should load.
·96x1Hupgrade.txt
This file list the firmware files that 9608, 9611, 9621, and 9641 phones should load.
·.bin Files
Following the instructions in the xxupgrade.txt file, the phone will load any .bin files it requires if their versions
differ from that which the phone already has loaded.
·.tar Files
Instead of the .bin file used by other phones, the 9600 Series phones use .tar archive files to download multiple
files in a single step and then unpack the .tar files to load their contents.
·46xxsettings.txt File
The last line of the xxupgrade.txt file instructs the phone to load a 46xxsettings.txt file. This is an editable file
which can be used to adjust the operation of the phones.
·.lng Files
The firmware may include language files for use by 1600 Series and 9600 Series phones. Which of these language
files are loaded is set in the 46xxsettings.txt file.
File Auto-Generation
When the IP Office system is acting as the file server for the phones, it is able to auto-generate the 46xxsettings.txt
and .lng files used by the phones. It will do this if the requested file is not physically present in the location where the
system is storing the firmware files.
Firmware Source Sets
The phone firmware files are installed as part of the IP Office Manager application and are found in the application's
installation directory. By default, the directory is found at c:\Program Files\Avaya\IP Office\Manager.
The same firmware files can also be obtained directly from the software package used to install IP Office Manager without
having to perform the installation. The files are located in the \program files\Avaya\IP Office\Manager sub-folder of
the installation directory.
Note that these sets of files include .bin files that are also used for other devices including the IP Office system itself.
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IP Office H.323 IP Phones: Phone Firmware
1.4 Simple Installation
The diagram below shows the simplest installation scenario. This has the IP Office system acting as the DHCP and file
servers for all the IP phones registered with it.
This type of installation uses the following equipment:
·IP Office Server
The IP Office system performs a number of roles for the phones:
·DHCP Server
The IP Office system is acting as the DHCP server for the phones. The DHCP response to the phones includes
both IP address settings, details of the file server to use as configured in the IP Office configuration and the
systems on address as the H.323 gatekeeper for the phones. The IP Office DHCP function can be configured
to provide DHCP addresses only in response to requests from Avaya IP phones. This allows an alternate DHCP
server to be used for other devices that use DHCP.
·H.323 Gatekeeper
IP phones require an H.323 gatekeeper to which they register. The gatekeeper then controls the connection of
calls to and from the phone. In this and all scenarios the IP Office systems as the H.323 Gatekeeper.
·File Server
During installation the IP phones need to download firmware files for a file server. This is done using either
HTTPS, HTTP or TFTP in that order (1600 and 9600 Series phones do not support TFTP). If the IP Office
control unit is fitted with a memory card (mandatory on IP500 v2 control units), that card can be used as the
file source.
·The IP Office system can use its own memory card to act as the file server for up to 50 phones. For larger
numbers a separate 3rd-party HTTP server should be used.
·The IP Office system is currently not supported as a file server for 9608, 9611, 9621, and 9641 phones.
This also applies to using the IP Office Manager application acting as the file server. These phones are
only supported when using a 3rd-party file server.
·Backup/Restore Server
1600 Series and 9600 Series phones can be configured to backup and restore user and phone settings to a
server. The address of this server is set separately from that of the file server used for phone firmware
though the same server may be useable. The recommended method is to us the IP Office system as the
server for this function.
·Switches
The IP Office has a limited number of LAN connection ports, intended only to connect itself to the existing data
network. The addition of IP phones will require the network to include additional port capacity.
·Power Supplies
Each H.323 IP phone requires a power supply. The IP Office system does not provide any power to IP phones. The
phones can be
·Power over Ethernet Supply
Most Avaya IP phones can be powered from an 802.3af Power over Ethernet (PoE) power supply. This can be
done using PoE switches to support multiple phones or using individual PoE injector devices for each phone.
·Individual Power Supply Units
An individual power supply unit can be used with each phone. This will require a power supply socket at each
phone location. Note that for phones using a button module add-on, for example a EU24 or BM32, an
individual power supply unit is often a requirement. The type of power supply will depend on the type of
phone.
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1.5 Installation Requirements
To install an IP phone on IP Office, the following items are required:
·Network Assessment
A network assessment must be completed. Avaya will not support VoIP on a network where a satisfactory network
assessment has not been obtained.
·Extension Number and User Details
A full listing of the planned extension number and user name details is required. The planned extension number
must be unused and is requested by the phone during installation.
·Power Supplies
Each phone requires a power supply. Avaya IP phones do not draw power from the IP Office. A number of options
exist for how power is supplied to the phones and all the Avaya IP deskphones support Power over Ethernet (PoE).
See Power Supply Options .
·LAN Socket
An RJ45 Ethernet LAN connection point is required for each phone.
·Category 5 Cabling
All LAN cables and LAN cable infrastructure used with H.323 IP phones should use CAT5 cabling.
·LAN Cables
Check that an RJ45 LAN cable has been supplied with the IP phone for connection to the power supply unit. You
may also need an additional RJ45 LAN cable for connection from the power unit to the customer LAN. This will
depend on the type of power supply being used.
·A further RJ45 LAN cable can be used to connect the user's PC to the LAN via the IP phone (not supported on
4601, 4602, 5601 and 5602 H.323 IP phones).
·Voice Compression Channels
The IP Office Unit must have voice compression channels installed. Channels are required during the connection if
calls involving IP phones and may also be required during the call. See Voice Compression Channels for full
details. For IP500 and IP500 V2 control units, channels are installed using a IP500 VCM base card and licenses or
using IP400 VCM modules on an IP500 Legacy Card.
·DHCP Server
The IP Office Unit can perform this role for all the phones. If another DHCP server is used for the network, this
may be able to do DHCP for the H.323 IP phones, see Alternate DHCP Servers . Also the IP Office system can
be configured to only provide DHCP support to Avaya IP phones.
·Static IP addressing can also be used for IP phone installation if required. However that method of
installation is not recommended.
·HTTP File Server
A PC running the <MANAGER> application can perform this role for up to five (5) H.323 IP phones. An IP Office
control unit with a memory card can use that memory card as the source for up to 50 phones. For larger numbers
a separate 3rd-party HTTP server should be used.
·The IP Office system is currently not supported as a file server for 9608, 9611, 9621, and 9641 phones.
This also applies to using the IP Office Manager application acting as the file server. These phones are
only supported when using a 3rd-party file server.
·H.323 Gatekeeper
The IP Office system performs this role.
·IP Office Manager
A Windows PC running IP Office Manager is required for IP Office configuration changes. The PC should also have
System Status Application and IP Office System Monitor installed.
·IP Telephone Software
The software for IP phone installation is installed into the IP Office Manager application's program folder as during
the applications installation. It is also included as part of the IP Office for Linux applications installation of the IP
Office application on the server.
·Licence Keys
Each Avaya IP phones registered with the system requires an Avaya Avaya IP Endpoint licenses to operate.
Refer to Licenses .
·Backup/Restore Server
The phones backup and restore various phone and user settings whenever the user logs on or logs out. This uses
files stored on a file server. This is not necessarily the same server as used for the phone firmware files. The IP
Office system's own file storage can be used for this function and is the recommended option.
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IP Office H.323 IP Phones: Installation Requirements
1.6 Licenses
The following licensing rules apply to the support of Avaya H.323 IP phones on a IP Office system. Note that B5800
Branch Gateway uses a different licensing system and different licensing rules. A B5800 Native Station license is required
for each H.323 phone on B5800. Please refer to the B5800 Branch Gateway Implementation Guide for more information.
·An Avaya IP Endpoint license is required for each Avaya H.323 IP phones. This includes all 1600, 4600, 5600,
9600, IP DECT, DECT R4, T3 IP and Spectralink.
·The system will automatically license 12 Avaya IP phones for each IP500 VCM 32 or VCM 64 card installed in
the system without requiring additional licenses to be added to the configuration.
·Additional Avaya IP phones are licensed either by the addition of Avaya IP Endpoints licenses above or the
conversion of legacy IP500 VCM Channels licenses to Channel Migration licenses (see below).
·By default licenses are consumed by each Avaya IP phone that registers with the IP Office in the order that
they register. The license is released if the phone unregisters. However, it is possible to reserve a license for
particular phones in order to ensure that they phones always obtain a license. This is done through the
Reserve Avaya IP Endpoint Licence setting of each IP extension.
·Avaya IP phones without a license will still be able to register but will be limited to making emergency calls
only (Dial Emergency short code calls). The associated user will be treated as if logged off and the phone will
display "No license available". If a license becomes available, it will be assigned to any unlicensed DECT
handsets first and then to any other unlicensed Avaya IP phone in the order that the phones registered.
·For existing IP500 systems being upgraded to IP Office Release 6, the existing VCM channels and IP500 VCM
Channels license are treated as follows:
·For each IP400 VCM card installed in the system, each VCM channel supported by the card allows support for
3 Avaya IP phones.
·For each IP500 VCM32 and IP500 VCM64 card installed in the system, the 4 unlicensed VCM channels
previously provided by each card are converted to allow unlicensed support of 12 Avaya IP phones.
·For each legacy IP500 VCM Channels license, the license are converted Channel Migration licenses
supporting 3 Avaya IP phones. See the Channel Migration license below.
·The IP500 VCM 32 and IP500 VCM 64 cards will provide their full capacity of VCM channels, ie. providing up to
32 or 64 channels depending on the card type and the codecs being used.
Licenses are issued against a unique feature key/dongle serial number. For IP500v2 control units that number is unique
to the System SD card fitted to the system. For IP500 control units that number is unique to the smart media card
inserted in the back of the control unit. To be valid, any licenses entered into the system configuration must be licenses
issued against that serial number. B5800 Branch Gateway licenses are issued against a unique PLDS Host ID.

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1.7 Network Assessment
The IP Office system is a pure Voice over IP (VoIP) system. All trunks and telephone extensions connect to the system
via the customers data network. It is therefore absolutely imperative that the customer network is assessed and
reconfigured if necessary to meet the needs of VoIP traffic.
·! WARNING: A Network Assessment is Mandatory
When installing IP phones on a IP Office system, it is assumed by Avaya that a network assessment has been
performed. If a support issue is escalated to Avaya, Avaya may request to see the results of a recent network
assessment and may refuse to provide support if a network assessment with satisfactory results has not been
performed.
Current technology allows optimally configured networks to deliver VoIP services with voice quality that matches that of
the public phone network. However, few networks are optimally configured and so care should be taken to assess the
VoIP quality achievable within a customer network.
Not every network is able to carry voice transmissions. Some data networks have insufficient capacity for voice traffic or
have data peaks that will occasionally impact voice traffic. In addition, the usual history of growing and developing a
network by integrating products from many vendors makes it necessary to test all the network components for
compatibility with VoIP traffic.
A network assessment should include a determination of the following:
·A network audit to review existing equipment and evaluate its capabilities, including its ability to meet both current
and planned voice and data needs.
·A determination of network objectives, including the dominant traffic type, choice of technologies and setting voice
quality objectives.
·The assessment should leave you confident that the network will have the capacity for the foreseen data and voice
traffic.
Network Assessment Targets
The network assessment targets are:
·Latency: Less than 180ms for good quality. Less than 80ms for toll quality.
This is the measurement of packet transfer time in one direction. The range 80ms to 180ms is generally
acceptable. Note that the different audio codecs used each impose a fixed delay caused by the codec conversion
as follows:
·G.711: 20ms.
·G.722: 40ms.
·G.729: 40ms.
·Packet Loss: Less than 3% for good quality. Less than 1% for toll quality.
Excessive packet loss will be audible as clipped words and may also cause call setup delays.
·Jitter: Less than 20ms.
Jitter is a measure of the variance in the time for different packets in the same call to reach their destination.
Excessive jitter will become audible as echo.
·Duration: Monitor statistics once every minute for a full week.
The network assessment must include normal hours of business operation.

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IP Office H.323 IP Phones: Network Assessment
1.8 Voice Compression Channels
Calls to and from IP devices can require conversion to the audio codec format being used by the IP device. For IP Office
systems this conversion is done by voice compression channels. These support the common IP audio codecs G.711,
G.722, and G.729a.
For IP400 control units channels can be added by fitting IP400 Voice Compression Modules (VCMs). For the IP500 control
units, channels can be added using IP500 VCM cards, IP500 Combination Cards and or IP400 Voice Compression
Modules.
The voice compression channels are used as follows:
Call Type
Voice Compression Channel Usage
IP Device to Non-IP
Device
These calls require a voice compression channel for the duration of the call. If no channel is
available, busy indication is returned to the caller.
IP Device to IP Device
Call progress tones (for example dial tone, secondary dial tone, etc) do not require voice
compression channels with the following exceptions:
·Short code confirmation, ARS camp on and account code entry tones require a voice
compression channel.
When a call is connected:
·If the IP devices use the same audio codec no voice compression channel is used.
·If the devices use differing audio codecs, a voice compression channel is required for
each.
Non-IP Device to Non-
IP Device
No voice compression channels are required.
Music on Hold
This is provided from the IP Office's TDM bus and therefore requires a voice compression
channel when played to an IP device.
Conference Resources
and IP Devices
Conferencing resources are managed by the conference chip which is on the IP Office's TDM
bus. Therefore, a voice compression channel is required for each IP device involved in a
conference. This includes services that use conference resources such as call listen,
intrusion, call recording and silent monitoring.
Page Calls to IP Device
IP Office 4.0 and higher only uses G.729a for page calls, therefore only requiring one
channel but also only supporting pages to G.729a capable devices.
Voicemail Services and
IP Devices
Calls to the IP Office voicemail servers are treated as data calls from the TDM bus. Therefore
calls from an IP device to voicemail require a voice compression channel.
Fax Calls
These are voice calls but with a slightly wider frequency range than spoken voice calls. IP
Office only supports fax across IP between IP Office systems with the Fax Transport option
selected. It does not currently support T38.
T38 Fax Calls
IP Office 5.0+ supports T38 fax on SIP trunks and SIP extensions. Each T38 fax call uses a
VCM channel.
Within a Small Community Network, a T38 fax call can be converted to a call across an
H.323 SCN lines using the IP Office Fax Transport Support protocol. This conversion uses 2
VCM channels.
In order use T38 Fax connection, the Equipment Classification of an analog extension
connected to a fax machine can be set Fax Machine. Additionally, a new short code
feature Dial Fax is available.
Note: T3 IP devices must be configured to 20ms packet size for the above conditions to apply. If left configured for
10ms packet size, a voice compression channel is needed for all tones and for non-direct media calls.

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Measuring Channel Usage
The IP Office system Status Application can be used to display voice compression channel usage. Within the Resources
section it displays the number of channel in use. It also displays how often there have been insufficient channels available
and the last time such an event occurred.
The IP500 VCM cards, the level of channel usage is also indicated by the LEDs (1 to 8) on the front of the IP500 VCM
card.
Installing VCM Cards
Refer to the IP Office Installation manual.

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IP Office H.323 IP Phones: Voice Compression Channels
1.9 QoS
When transporting voice over low speed links it is possible for normal data packets (1500 byte packets) to prevent or
delay voice packets (typically 67 or 31 bytes) from getting across the link. This can cause unacceptable speech quality.
Therefore, it is vital that all traffic routers and switches in the network have some form of Quality of Service (QoS)
mechanism. QoS routers are essential to ensure low speech latency and to maintain sufficient audio quality.
IP Office supports the DiffServ (RFC2474) QoS mechanism. This is based upon using a Type of Service (ToS) field in the
IP packet header. On its WAN interfaces, IP Office uses this to prioritize voice and voice signalling packets. It also
fragments large data packets and, where supported, provides VoIP header compression to minimize the WAN overhead.
1.10 Potential VoIP Problems
It is likely that any fault on a network, regardless of its cause, will initially show up as a degradation in the quality of VoIP
operation. This is regardless of whether the fault is with the VoIP telephony equipment. Therefore, by installing a VoIP
solution, you must be aware that you will become the first point of call for diagnosing and assessing all potential
customer network issues.
Potential Problems
·End-to-End Matching Standards
VoIP depends upon the support and selection of the same voice compression, header compression and QoS
standards throughout all stages of the calls routing. The start and end points must be using the same compression
methods. All intermediate points must support DiffServ QoS.
·Avoid Hubs
Hubs introduce echo and congestion points. If the customer network requires LAN connections beyond the capacity
of the IP Office Unit itself, Ethernet switches should be used. Even if this is not the case, Ethernet switches are
recommended as they allow traffic prioritization to be implemented for VoIP devices.
·Power Supply Conditioning, Protection and Backup
Traditional phone systems provide power to all their attached phone devices from a single source. In a VoIP
installation, the same care and concern that goes into providing power conditioning, protection and backup to the
central phone system, must now be applied to all devices on the IP network.
·Multicasting
In a data only network, it is possible for an incorrectly installed printer or hub card to multicast traffic without that
fault being immediately identified. On a VoIP network incorrect multicasting will quickly affect VoIP calls and
features.
·Duplicate IP Addressing
Duplicate addresses is a frequent issue.
·Excessive Utilization
A workstation that constantly transmits high traffic levels can flood a network, causing VoIP service to disappear.
·Network Access
An IP network is much more open to users connecting a new device or installing software on existing devices that
then impacts on VoIP.
·Cabling Connections
Technically VoIP can (bandwidth allowing) be run across any IP network connection. In practice, Cat5 cabling is
essential.

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1.11 User PC Connection
To simplify the number of LAN connections from the user's desk, it is possible to route their PC Ethernet LAN cable via
most Avaya IP phones.
The LAN cable should be connected from the PC to the socket with a PC symbol ( ) at the back of the IP phone. The PC's
network configuration does not need to be altered from that which it previously used for direct connection to the LAN.
Except for phones with a G suffix, this port supports 10/100Mbps ethernet connections. Phones with a G suffix also
support 1000Mbps Gigabit connections.
For phones without a PC port, a separate Gigabit Adapter (SAP 700416985) must be used. This device splits the data and
voice traffic before it reaches the phone, providing a 10/100Mbps output for the phone and a 10/100/1000Mbps output
for the PC. The adapter is powered from the phone's existing power supply. Refer to the "Gigabit Ethernet Adapter
Installation and Safety Instructions" (16-601543).
H.323 IP
Phones
Supported
Models
PC Port
H.323 IP
Phones
Supported
Models
PC Port
1600
Series
1603
–
5600
Series
5601
–
1603SW
5602
–
1608
5602SW
1616
5610SW[1]
4600
Series
4601
–
5620
4602
–
5621SW[1]
4602SW
9600
Series
9620L
4606
9620C
4610SW[1]
9630G
4612
9640
4620
–
9640G
4620SW
9650
4621SW[1]
9650C
4624
9608
4625
9611G
9621G
9641G

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IP Office H.323 IP Phones: User PC Connection
1.12 Power Supply Options
Each H.323 IP phone requires a power supply. They do not draw power from the phone system. Listed below are the
power supply options that can be used.
Power over Ethernet (PoE) Options
IEEE 802.3af is a standard commonly known as Power over Ethernet (PoE). It allows network devices to receive power
via the network cable using the same wires as the data signals. All the Avaya H.323 IP phones supported on IP Office
also support this standard.
Where a large number of phones is being installed, the use of PoE switches is recommended. For other scenarios,
individual PoE injector devices can be used to add PoE power support to the phone's LAN connection from a non-PoE
switch.
H.323 IP
Phones
Supported
Models
802.3af PoE
Class
H.323 IP
Phones
Supported
Models
802.3af PoE Class
Class
Idle
Class
Idle
1600
Series
1603
2
4.4W
5600
Series
5601
2
3.5W
1603SW
2
4.4W
5602
1
–
1608
2
3.7W
5602SW
2
4.1W
1616
2
2.7W
5610SW
2
3.1W
4600
Series
4601
2
3.5W
5620
3
3.6W
4602
1
–
5621SW
2
–
4602SW
2
3.5W
9600
Series
9620L
1
2.0W
4606
0
4.1W
9620C
2
3.9W
4610SW[1]
2
4.0W
9630G
2
4.6W
4612
0
4.1W
9640
2
3.9W
4620
3
4.0W
9640G
2
3.9W
4620SW
2
–
9650
2
4.7W
4621SW[1]
2
5.75W
9650C
2
3.7W
4624
0
4.1W
9608
1
2.08W
4625
3
6.45W
9611G
1
2.8W
9621G
2
3.49W
9641G
2
3.44W
These 1603 and 1603SW phones require a separate PoE Splitter unit in order to use PoE.
·Exceeding the Class limit of a PoE port or the total Class support of a PoE switch may cause incorrect operation.
·Note that for phones being used with an add-on button module unit, an individual power supply must be used
rather than connection to a PoE switch.
1600 Series Phones
These phones can use either PoE as above or can be powered from using 1600 Series plug-top power supply units
(PSUs). Different models of PSU exist for the various type of mains power outlets in different countries. The PSU connects
to the phone using a barrel connector under the phone.
4600/5600 Series Spare Wire Power Options
The following power supplies use the normally unused pin 7 & 8 connections in the CAT3 or CAT5 network cable. This is
referred to as "spare wire" or "mid-span" power supply units. They can be used with 4600 Series and 5600 Series IP
phones.

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·Avaya 1151D1 Power Supply Unit (PSU)
A power supply unit for a single IP phone. Has a LINE port for the LAN cable from the IP Office, and a PHONE port
for the LAN cable to the IP phone. Power into the PSU requires a 90 to 264V AC, 47 to 63HZ mains supply. A
green LED indicates when power is available.
·Avaya 1151D2 Power Supply Unit
Same as the 1151C1 above but with integral battery backup. When AC mains supply is removed, the battery will
power the IP phone for between 8 hours at light load (2 Watts) and 15 minutes at full load (20 Watts). A green
LED indicates when power is available. A yellow LED indicates when the backup is charging. The green LED flashes
when the phone is running from the backup battery.
9600
These phones only support the use of Power over Ethernet (PoE). If not being supplied by a PoE switch, an Avaya Single
Port PoE injector (SPPOE-1A) can be used for each phone.