Yealink SIP-T48G

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
834
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
Refer-To
Yes
Referred-By
Yes
Remote-Party-ID
Yes
Replaces
Yes
Require
Yes
Route
Yes