Yealink W60P Administrator's Manual page 221

directed to the configured emergency server. Multiple emergency servers may need to be
configured for emergency routing, avoiding that emergency calls couldn't get through because
of the server failure. If the phone is not locked, it checks against the regular dial plan (refer to
Dial Plan). If the phone is locked, it checks against the emergency dial plan.
Emergency Location Identification Number (ELIN)
The DECT IP phones support Link Layer Discovery Protocol for Media Endpoint Devices (LLDP-
MED). LLDP-MED allows the phone to use the location information, Emergency Location
Identification Number (ELIN), sent by the switch, as a caller ID for making emergency calls. The
outbound identity used in the P-Asserted-Identity (PAI) header of the SIP INVITE request is
taken from the network using an LLDP-MED Emergency Location Identifier Number (ELIN). The
administrator can customize the outbound identity. The custom outbound identity will be used
if the phone fails to get the LLDP-MED ELIN value.
The following is an example of the PAI header:
P-asserted-identity: <sip: 1234567890@abc.com > (where 1234567890 is the custom
outbound identity.)
P-Access-Network-Info (PANI)
When placing an emergency call, the MAC address of the phone/connected switch should be
added in the P-Access-Network-Info (PANI) header of the INVITE message. It helps the aid
agency to immediately identify the caller's location, improving rescue efficiency.
The following is an example of the PANI header:
P-Access-Network-Info: IEEE-802.3; eth-location="00:15:65:74:b1:6e" (where 00156574B16E is
the phone's MAC address.)
Procedure
Emergency dialplan can be configured using the configuration file.
Central
Provisioning
y000000000077.cfg
(Configuration
File)
Configuring Basic Features
Configure the emergency dialplan.
Parameters:
dialplan.emergency.asserted_id_source
dialplan.emergency.custom_asserted_id
dialplan.emergency.server.X.address
dialplan.emergency.server.X.port
dialplan.emergency.server.X.transport_type
dialplan.emergency.X.value
dialplan.emergency.X.server_priority
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