Yealink T27G

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones
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Description
It configures the port of emergency server X to be used for routing calls.
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
Values
Integer from 1 to 65535
Default
5060
Parameter
dialplan.emergency.server.X.transport_type
[1]
<y0000000000xx>.cfg
Description
It configures the transport protocol the IP phone uses to communicate with the
emergency server X.
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
Values
0-UDP
1-TCP
2-TLS
3-DNS-NAPTR
Default
0
Parameter
dialplan.emergency.X.value
[2]
<y0000000000xx>.cfg
Description
It configures the emergency number to use on your IP phone so a caller can contact
emergency services in the local area when required.
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
Values
Number or SIP URI
Default
When X = 1, the default value is 911;
When X = 2-255, the default value is Blank.
Parameter
dialplan.emergency.X.server_priority
[2]
<y0000000000xx>.cfg
Description
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.
Note: If the account information has been configured (no matter whether the account
registration succeeds 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