Yealink SIP-T38G

Administrator’s Guide for SIP-T3xG IP Phones
336
Method
Supported
Notes
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
RSeq
Yes
Session-Expires
Yes
Subscription-State
Yes
Supported
Yes
To
Yes
User-Agent
Yes
Via
Yes
The following SIP responses are supported:
1xx Response—Information Responses
1xx Response
Supported
Notes
100 Trying
Yes