Yealink T46G Skype For Business Edition, Administrator'S Manual

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Yealink Skype for Business HD IP Phones Administrator Guide
374
SIP Header
The following SIP request headers are supported:
Note
Method Supported Notes
Accept Yes
Alert-Info Yes
Allow Yes
Allow-Events Yes
Authorization Yes
Call-ID Yes
Call-Info Yes
Contact Yes
Content-Length Yes
Content-Type Yes
CSeq Yes
Diversion Yes
History-Info Yes
Event Yes
Expires Yes
From Yes
Max-Forwards Yes
Min-SE Yes
P-Asserted-Identity Yes
P-Preferred-Identity Yes
Proxy-Authenticate Yes
Proxy-Authorization Yes
RAck Yes
Record-Route Yes
In the following table, a “Yes” in the Supported column means the header is sent and properly
parsed.