Supported Sip Notify Message; Variable Values List - Yealink SIP-T3 Administrator's Manual

Administrator's Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
A GET request may contain a variable named as "key" and a variable value, which are separated by "=". The valid
URI format is: http(s)://<phoneIPAddress>/servlet?key=variable value.
Note
: Yealink phones are compatible with other two old valid URI formats: http(s)://<phoneIPAddress>/cgi-bin/Con-
figManApp.com?key=variable value and http(s)://<phoneIPAddress>/cgi-bin/cgiServer.exx?key=variable value.
For security reasons, the phones do not handle HTTP/HTTPS GET requests by default. You need to specify the trus-
ted IP address for action URI. You can specify one or more trusted IP addresses on the IP phone, or configure the IP
phone to receive and handle the URI from any IP address.

Supported SIP Notify Message

In addition, Yealink phones can perform the specified action immediately by accepting a SIP NOTIFY message with
the "Event: ACTION-URI" header from a SIP proxy server. The message body of the SIP NOTIFY message may con-
tain a variable named as "key" and a variable value, which are separated by "=".
This method is especially useful for users who always work in the small office/home office where a secure firewall
may prevent the HTTP or HTTPS GET request from the external network.
Note
: If you want to only accept the SIP NOTIFY message from your SIP server and outbound proxy server, you have to
enable the Accept SIP Trust Server Only feature. For more information, refer to
If you use SIP NOTIFY message method, you do not need to specify the trusted IP address for action URI. However,
you should enable the IP phone to receive the action URI requests.
Example of a SIP Notify with the variable value (OK):
Message Header
NOTIFY sip:3583@10.2.40.10:5062 SIP/2.0
Via: SIP/2.0/UDP 10.2.40.27:5063;branch=z9hG4bK4163876675
From: <sip:3586@10.2.1.48 > ;tag=2900480538
To: "3583" <sip:3583@10.2.1.48 > ;tag=490600926
Call-ID: 2923387519@10.2.40.10
CSeq: 4 NOTIFY
Contact: <sip:3586@10.2.40.27:5063 >
Max-Forwards: 70
User-Agent: Yealink SIP-T46G
Event: ACTION-URI
Content-Type: message/sipfrag
Content-Length: 6
Message Body
key=OK

Variable Values List

Yealink phones also support a combination of the variable values in the URI, but the order of the variable value is
determined by the operation of the phone. The valid URI format is: http(s)://<phoneIPAddress>/servlet?key=variable
value[;variable value]. Variable values are separated by a semicolon from each other. This method is not applicable
to T57W/T48U/T48S/T48G phones.
The following shows an example for deleting all entries from the call history list when the phone is idle:
527
Accept SIP Trust Server Only
.