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Sip Responses - Yealink SIP-T54S Administrator's Manual

Sip-t2 series; sip-t4 series; sip-t5 series
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Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Method
RAck
Record-Route
Refer-To
Referred-By
Remote-Party-ID
Replaces
Require
Route
RSeq
Session-Expires
Subscription-State
Supported
To
User-Agent
Via

SIP Responses

The following SIP responses are supported:
In the following table, a "Yes" in the Supported column means the header is sent and properly
Note
parsed. The phone may not actually generate the response.
1xx Responses—Provisional
1xx Response
100 Trying
180 Ringing
181 Call Is Being Forwarded
182 Queued
183 Session Progress
1058
Supported
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Supported
Yes
Yes
Yes
Yes
Yes
Notes
Notes

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