Fortinet FortiFone-FON-D72 User manual

FortiFone - FON-D72 User Guide

FORTINET DOCUMENT LIBRARY
https://docs.fortinet.com
FORTINET VIDEO GUIDE
https://video.fortinet.com
FORTINET BLOG
https://blog.fortinet.com
CUSTOMER SERVICE & SUPPORT
https://support.fortinet.com
FORTINET TRAINING & CERTIFICATION PROGRAM
https://www.fortinet.com/support-and-training/training.html
NSE INSTITUTE
https://training.fortinet.com
FORTIGUARD CENTER
https://fortiguard.com/
END USER LICENSE AGREEMENT
https://www.fortinet.com/doc/legal/EULA.pdf
FEEDBACK
Email: [e-mail]
November 25, 2020
FortiFone FON-D72 User Guide
26-000-650657-20201125

TABLEOFCONTENTS
Change log 4
Introduction 5
Phone features 5
Phone buttons 6
Requirements 7
Installation 8
Mounting the base station 8
Connecting the base station 9
Setting up the phone 9
For use as an internal extension 9
For use as an external extension 9
Deployment 10
Estimating number of base stations based upon handsets 10
Estimating number of base stations based upon area 11
Calculating base station layout and measurements 12
Base station clusters 12
Sync level 12
Signal transmission 14
Creating a planning drawing 15
Measuring signal strength 17
Measurement procedure 18
Measuring signal strength 20
Deploying in a multi-story building 22
Troubleshooting 23
FortiFone FON-D72 User Guide 3
Fortinet Technologies Inc.

Change log
Date Change description
2020-11-10 Initial release of the FortiFone FON-D72 User Guide.
2020-11-25 Updated Estimating number of base stations based upon handsets on page 10.
Removed references to version 6.0.0. The version number is not required for this guide.
FortiFone FON-D72 User Guide 4
Fortinet Technologies Inc.

Introduction
Introduction
This user guide includes information about configuring and using your FON-D72 IP phone.
This section contains the following topics:
lPhone features
lPhone buttons
lRequirements
Phone features
lUp to 8 concurrent calls per base, up to a maximum of 100.
lUp to 8 handsets per base, up to a maximum of 100.
lSupports up to 30 FON-D72-B bases, increasing the amount of calls, handsets and range that the FON-D72 is
capable of.
lPoE support for the bases eliminates the need for a power adapter.
FON-D72-M/B base stations FON-D71-H handset
FortiFone FON-D72 User Guide 5
Fortinet Technologies Inc.

Introduction
Phone buttons
Button Function
1. LAN LED Indicates the LAN connection status:
lSolid green – successful connection to LAN.
lSlow flashing green – no IP address available/assigned or no connection to
LAN.
lOff – no power.
2. ROLE LED Indicates the role of the base:
lOrange – the role is DECT Manager.
lGreen – the role is Base.
lSlow flashing orange – active calls on the DECT Manager.
3. DECT LED Indicates the power status of the base station:
lGreen – DECT Manager and Base are active and synced.
lSlow flashing green – active calls on Base.
lOff – DECT Manager and Base are not synced or offline.
4. Device key Hold for 20 seconds to restore factory defaults.
FortiFone FON-D72 User Guide 6
Fortinet Technologies Inc.

Introduction
Requirements
A FON-D72 configuration requires the following:
l1 x FON-D72-M
l1 x FON-D72-B
l1 x FON-D71-H
FortiFone FON-D72 User Guide 7
Fortinet Technologies Inc.

Installation
Installation
The installation chapter contains the following sections to help install your phone:
lMounting the base station
lConnecting the base station
lSetting up the phone
Mounting the base station
The base station can be wall mounted using two screws set 59 mm apart. The base station may be mounted upright (A),
sideways (B) or on the ceiling (C). The recommended installation height for a base station is between 1.8 and 3 meters,
depending on the room height.
FortiFone FON-D72 User Guide 8
Fortinet Technologies Inc.

Installation
Connecting the base station
To connect the base station
1. Connect an Ethernet cable to the Internet port on FON-D72-M and FON-D72-B.
2. Connect both bases to an IEEE 802.3af compliant PoE hub or switch.
Setting up the phone
For instructions about configuring an extension, see the FortiVoice Phone System Administration Guide. After the
extension is created, the FON-D72 can be configured as an internal and external extension.
For use as an internal extension
The FON-D72 supports plug and play installation.
To configure as an internal extension
1. Configure the FON-D72 extensions on FortiVoice.
2. On the FON-D71-H handsets press the Reg softkey. The handsets will display their name and extension number
on screen.
For use as an external extension
To configure as an external extension
1. Enter the IP address of the FON-D72-M into a web browser.
2. Enter "admin" as the username and "23646" as the password.
3. Go to Settings > Auto Provision.
4. In the Server URL, enter the public IP address or FQDN of FortiVoice and click Confirm.
5. On the FON-D72-H handsets, press the Reg softkey. The handsets will display their name and extension number
on screen.
To allow the base stations to take signal measurements and determine their optimal
placement, make sure to complete the registration of at least one handset.
FortiFone FON-D72 User Guide 9
Fortinet Technologies Inc.

Deployment
Deployment
The base stations in a FON-D72 multi-cell network must synchronize with each other to ensure a seamless handover
while roaming. For a successful deployment of the multi-cell network, take measurements for the optimum positions of
the base stations.
There are three key deployment tasks:
1. Estimating number of base stations based upon handsets on page 10
2. Estimating number of base stations based upon area on page 11
3. Calculating base station layout and measurements on page 12
Estimating number of base stations based upon handsets
The following requirements must be considered when estimating how many base stations are needed and deciding
where they should be placed:
lDECT radio coverage of the entire site.
lNumber of connection channels to avoid capacity bottlenecks.
lBase station overlap for synchronization to guarantee roaming and handover.
The following table shows the maximum number of connection channels and handsets that can be handled in relation to
the number of FON-D72-B base stations:
FON-D72-B Connection channels Active handsets
1 8 8
2 16 16
3 24 24
4 32 32
5 40 40
6 48 48
7 50 50
8 50 50
9 50 50
10 50 50
11 88 88
12 96 96
13 100 100
14 100 100
FortiFone FON-D72 User Guide 10
Fortinet Technologies Inc.

Deployment
The capacity of the multi-cell system must be high enough to guarantee that subscribers can be reached in high-density
traffic. The capacity of the multi-cell system is determined by the following:
lNumber of connection channels available. Connection channels are used for phone calls and for list access actions
(when the handset accesses the History or Directory).
lGrade of service (GoS) determines the number of connections that may not be achieved due to the system being at
full capacity. With a grade of service of 5%, it is permissible for 5% of 300 calls (15 connections) not to be
established. This means that only 285 connections have to be achieved.
To calculate the number of connection channels required, use the following formula:
(<Number of calls per hour> – (<Number of calls per hour> x <GoS%>)) x <Average length of call per
hour> / 60 min.
As an example, you set the GoS at 5% and you require 300 calls per hour at an average length of 5 minutes each. The
equation would be: (300 – (300 x 5%)) x 5/60 = 23.75. This means that 24 connection channels would be required, and
you would need 3 base stations.
Since the traffic volume is not normally evenly distributed over the site to be covered, the traffic volume must be
calculated for each area (offices, hotspots, stairwells) to determine the number of base stations that need to be
installed.
Estimating number of base stations based upon area
Estimate the approximate number of base stations according to the total area of expected DECT coverage.
The calculation for this is:
Number of base stations = <size of coverage area (in square meters)> / 800
The suggested distance between two base stations depends on the physical path between the base stations.
The following table lists the recommended distance between two base stations:
Area Distance between two base stations
Office areas Up to 40 meters
Office areas with obstacles such as elevator shafts,
stairwells or metal walls
Up to 10 meters
Shop floors Up to 60 meters
Exhibition halls or production areas without obstacles Up to 100 meters
Underground garages Up to 20 meters
As the base stations can interfere with each other, sufficient distance should be maintained between two base stations.
The minimum distance depends on the circumstances. If there are no obstacles between them, the required distance
can be from 5 to 10 meters. If there are obstacles such as absorbent walls or absorbent furniture between them, 1 to 2
meters may be sufficient.
FortiFone FON-D72 User Guide 11
Fortinet Technologies Inc.

Deployment
Calculating base station layout and measurements
The following section details the best base station layout and measurements for the best coverage.
Base station clusters
A cluster is comprised of a number of base stations within the DECT multi-cell system that synchronize with each other
to enable handover, roaming, list access, and load balancing.
Handover: The DECT connection of a handset is passed to another base station during a call.
Roaming: A handset in idle status is connected to the multi-cell system via a new base station.
List Access: All menus accessed by a handset that interact with the base station (History and Directory).
Load Balancing: If the current base station is overloaded with active DECT or media connections, the DECT
connection is set up with a neighboring base station with available resources to handle a call.
Handover and load balancing take affect only when the base stations are synchronized with each other.
Sync level
Each base station is assigned to a corresponding sync level. A base station always synchronizes with a base station that
has a higher sync level. If several base stations with a higher sync level have been discovered, synchronization occurs
with the base station that has the strongest signal. If no base stations with a higher sync level are detected,
synchronization cannot occur.
FortiFone FON-D72 User Guide 12
Fortinet Technologies Inc.

Deployment
Sync level 1 is the highest sync level, it should be the base station that is in the center of your multi-cell network. This is
to help prevent the possibility of synchronization loss.
There can only be one base that is set to sync level 1. Keep this in mind when configuring the
FON-D72 in FortiVoice.
Correct:
Incorrect:
The multi-cell network can be configured in numerous ways. Below are examples of multi-cell networks that maintain a
strong synchronization between base stations:
FortiFone FON-D72 User Guide 13
Fortinet Technologies Inc.

Deployment
Signal transmission
The ideal signal transmission of a base station is omni-directional. All registered handsets can be the same distance
away from a base station in all directions, without interruption of the DECT signal.
Range can be influenced by a variety of environmental conditions. For optimal signal strength, it is best to first
temporarily put base stations in place and measure the signal transmission.
The following table gives a general guideline on the degree to which certain materials will reduce signal strength:
Material Degree of attenuation Example
Air None Open space
Wood Low Door, floor, partition
Plastic Low Partition
Glass Low Un-tinted glass, partition
FortiFone FON-D72 User Guide 14
Fortinet Technologies Inc.

Deployment
Material Degree of attenuation Example
Tinted glass Medium Tinted-glass, partition
Living creatures Medium Crowds, plants
Brick Medium Walls
Plaster Medium Partitions
Ceramic High Tiles
Concrete High Load-bearing walls, floors, pillars
Metal Very High Reinforced concrete, metal cabinets
Consider the following tips when selecting positions for base stations:
lConsidering the coverage of wireless signals in the building, it is better to install the base stations at corridor
intersections, like so:
lIn a multi-story building, we recommend that you install additional base stations in the stairwells.
lDo not install the base in suspended ceilings, cupboards or other closed furniture. The DECT coverage will be
significantly reduced depending on the materials used.
lAvoid installing base stations in the direct vicinity of cable channels, metal cupboards or other larger metal devices.
Creating a planning drawing
Create a planning drawing to determine the placements of the base stations. Enter the building dimensions, identify
hotspot areas and any sources of interference.
FortiFone FON-D72 User Guide 15
Fortinet Technologies Inc.

Deployment
lNumber of handsets in each room are show in bold, for example: 15X.
lAreas with high-density traffic are marked as hotspots (HS).
lThe different lines indicate different building materials. The following table displays the loss of DECT signal
through the various materials:
Building materials Degree of attenuation
Metal Very High
Concrete walls High
Brick walls Medium
Glass Low
Now you can enter the preliminary placements of the base stations into the planning drawing:
FortiFone FON-D72 User Guide 16
Fortinet Technologies Inc.

Deployment
This example shows the preliminary positions of base stations A, B, C, D, E and F. You will need to configure the
corresponding sync level for each base station according to these positions. Start with the base station for which a
subsequent change would mean the greatest effort, this will be the base station with sync level 1. Then move outwards
from sync level to sync level.
Here we have set the following:
Sync Level 1: Base station A
Sync Level 2: Base station B,Cand E
Sync Level 3: Base station Dand F
For the office room hotspot, two additional base stations have been placed in parallel for optimal coverage and channel
connections.
In this example, the other hotspot is the After-sales Department. Two base stations service this area, base station Eis
outside of the room but is behind a glass wall, which has little effect on the DECT signal.
Check to ensure that these placements are correct by taking measurements, as described in the Measuring signal
strength section.
Measuring signal strength
Taking measurements can help determine where you may need to put additional base stations to have handover and
synchronization.
FortiFone FON-D72 User Guide 17
Fortinet Technologies Inc.

Deployment
To take measurements, you can use a registered FON-D71-H handset to measure the signal strength of the current
position of a base station through the Metering Mode.
To enable Metering Mode:
1. Configure a FON-D72-M, FON-D72-B and a FON-D71-H with FortiVoice.
2. On the FON-D71-H idle screen dial *1234203#, which will allow configuration of the measurement setting.
3. On the FON-D71-H press the OK button.
4. Go to Settings > Telephony > Metering Mode.
5. Change Status to Enabled.
6. Select the RSSI unit to display (dBm is default)
7. Select the measurement interval. This has a value of 5 to 15 (0.8 second to 2 .4 seconds). The recommended value
is 6.
8. Press the Save softkey.
9. Press the off-hook button to return to the idle screen and display the measurements.
10. Repeat steps 1 to 9 with a second FON-D71-H to check voice quality between two handsets while also taking
measurements. The idle screen will display the following:
RSSI: Received Signal Strength Indication. The recommended value is -27 to -85 dBm. For guaranteed call quality and
interference-free handover, a reading of -80 dBm. To guarantee synchronization between base stations, a reading of
-85dBm is needed.
Fr. quality: Frame quality. Percentage of packages received without error. Recommended value is 100%
Base Station: The RPN (Radio Fixed Part Number), identifying the base station that the handset is connected to.
Frequency: Carrier frequency of the signal received. Value range: 0 to 30.
Slot pair: Time slot for the reception channel on which the measurement was performed.
Measurement procedure
After the handsets have registered and Metering Mode is enabled, measurements can now be taken. It is
recommended to keep a measurement log for reference:
1. Temporarily affix the measuring base station in the planned position where it will be installed.
2. Establish a call between the two measuring handsets, observing the signal, until the RSSI reaches -80dBm. Make
note of this within your reference log.
FortiFone FON-D72 User Guide 18
Fortinet Technologies Inc.

Deployment
3. Check the voice quality within limit areas using the measuring handsets.
4. Record any deviations in the reception signal measurement of the voice quality within your measurement log.
The following image presents an example planning drawing:
The following table presents an example of measurement log results (in dBm/100%) for the above planning drawing:
Measuring
point
Base A Base B Base C Base D Base E Base F
1 -55 -52 -49
2 -50 -54 -35
3 -47 -30 -50
4 -50 -50
5 -62
6 -61
7 -57
8 -64
9 -63
10 -52
FortiFone FON-D72 User Guide 19
Fortinet Technologies Inc.

Deployment
Measuring
point
Base A Base B Base C Base D Base E Base F
11 -57 -59 -55
12 -60 -50
13 -53
14 -58
15 -35 -52
16 -34 -50
17 -53 -40
18 -52
19 -40
Measuring signal strength
Measure the signal strength transmitted from the measuring base station and the planned position of the neighboring
base station. This measurement is used to ensure that sufficient synchronization overlap is guaranteed.
For the base stations to be able to synchronize, we recommend that the signal value between the base stations be kept
above -85 dBm.
For this procedure:
1. Leave the first-level base station at the planned position. Take the measuring handset to the planned position of
the second-level base station.
2. Check to ensure that the RSSI is within -85 dBm and the frame quality is at 100%.
3. Record this within your measurement log.
4. Measure for all planned positions of base stations that will synchronize with the first-level base station.
The following image presents an example of planned base station positions:
FortiFone FON-D72 User Guide 20
Fortinet Technologies Inc.