Matrix SPARSH VP710, User Manual, Page: 231 / 1046

Matrix SPARSH VP710 User Guide 223
Emergency Dialplan
The IP Phone support dialing emergency telephone numbers when the phone is locked (refer to Phone Lock). Due
to the fact that the IP phone must have a registered account or a configured SIP server, it may not meet the need of
dialing emergency telephone number at anytime.
Emergency dialplan allows users to dial the emergency telephone number (emergency services number) at any
time when the IP phone is powered on and has been connected to the network.It is available even if your phone
keypad is locked or no SIP account is registered.
Emergency Dial Plan
Users can configure the emergency dial plan on the phone (e.g., emergency number, emergency routing). The
phone determines if this is an emergency number by checking the emergency dial plan configured on the phone.
When placing an emergency call, the call is 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 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 created using the configuration files.
Configuration File <MAC>.cfg
Configure the emergency dialplan.
For more information, refer “Appendix
D - Configuration Parameters” .