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There are some situations when it is necessary to use IP Phones from any other brand and sometimes the Phone includes Expansion Modules as soon as the Expansion Module is connnected to the Phone and the Phone to the PoE Switch port this Expansion Module does not turn on.
For Example, some Cisco IP Phones with Expansion Modules do not turn on with a normal Switch port configuration, as soon as the correct lldp profile is configured and is assigned to the Forti Switch port the module is turned on and connected to the IP Phone.
Related document:
https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/ip-phone-8851-8861-key-exp...
Find more information about 802.3-tlvs which is not enabled by default, this means the switch port will be using energy-efficient Ethernet
Related document:
Configuring LLDP profiles
- Read the PoE budget requirements from the IP Phone. Maybe it requires PoE 802.3af or 803.3at. Check also the FortiSwitch PoE budget requirements for the IP phone is the proper election.
- If the FortiSwitch is validated to be able to provide enough power budget to the IP Phone and it still is not turned on, it is necessary to apply a special lldp profile to activate the Expansion Module like this example:
Create the LLDP profile:
S224EPTF18-----1 # config switch lldp profile
S224EPTF18-----1 (profile) # edit PhonesExpansion
new entry 'PhonesExpansion' added
S224EPTF18-----1 (PhonesExpansion) # set 802.3-tlvs
eee-config Efficient energy enthernet config.
max-frame-size Maximum frame size TLV.
power-negotiation PoE+ classification TLV.
S224EPTF18-----11 (PhonesExpansion) # set 802.3-tlvs power-negotiation
S224EPTF18-----1(PhonesExpansion) # end
Assign the LLDP profile to the Switch port:
S224EPTF18-----1 # config switch physical-port
S224EPTF18-----1 (physical-port) # edit port13
SS224EPTF18-----1 (port13) # set lldp-profile PhonesExpansion
S224EPTF18-----1 (port13) # next
S224EPTF18-----1 (physical-port) # edit port13
S224EPTF18-----1(port13) # show full-configuration
config switch physical-port
edit "port13"
set cdp-status disable
set description ''
set dmi-status global
set energy-efficient-ethernet disable
set flapguard disabled
set flow-control disable
set fortilink-p2p disable
set l2-learning enabled
set lldp-profile "PhonesExpansion"
set lldp-status tx-rx
set loopback disable
set max-frame-size 9216
set speed auto
set status up
set storm-control-mode global
next
end
S224EPTF18-----1 (port13) #
Now, it is possible to use the IP Phone with the Expansion Module.
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