Yealink SIP-T2 Series Administrator's Manual page 282

Administrator's Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
Note: It works only if "dialplan.emergency.enable" is set to 1 (Enabled) and "dialplan.emergency.asserted_
id_source" is not set to HELD.
0-UDP
1-TCP
Permitted
Values
2-TLS
3-DNS-NAPTR
Default 0
Parameter dialplan.emergency.X.value
It configures the emergency number to use on your IP phone so a caller can contact emergency services
in the local area when required.
Description
Note: It works only if "dialplan.emergency.enable" is set to 1 (Enabled) and "dialplan.emergency.asserted_
id_source" is not set to HELD.
Permitted
Number or SIP URI
Values
When X = 1, the default value is 911;
Default
When X = 2-255, the default value is Blank.
Parameter dialplan.emergency.X.server_priority
It configures the priority of which the emergency servers to be used first.
Multiple values are separated by commas. The servers to be used in the order listed (left to right).
The IP phone tries to make emergency calls using the emergency server with higher priority, and then
with lower priority. The IP phone tries to send the INVITE request to each emergency server three times.
Description
Note: If the account information has been configured (no matter whether the account registration suc-
ceeds or fails), the emergency calls will be dialed using the following priority: SIP server>emergency
server; if not, the emergency server will be used. It works only if "dialplan.emergency.enable" is set to 1
(Enabled). and "dialplan.emergency.asserted_id_source" is not set to HELD.
Permitted
a combination of digits 1, 2 and 3
Values
Default 1, 2, 3
Parameter dialplan.emergency.held.server_url
It configures the Location Information Server URL for the IP phone to send HELD location request.
Description
Note: It works only if "dialplan.emergency.enable" is set to 1 (Enabled) and "dialplan.emergency.asserted_
id_source" is set to HELD.
Permitted
String
Values
Default Blank
Parameter dialplan.emergency.held.request_type
It configures the type of the location request message.
Description
Note: It works only if "dialplan.emergency.enable" is set to 1 (Enabled) and "dialplan.emergency.asserted_
id_source" is set to HELD.
Permitted SIMPLE or REDSKY
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<y0000000000xx>.cfg