Cisco 7960 - Dialing Back a Caller; Sending a Message Directly to an Extension; Personal Greetings

A-11
Cisco SIP IP Phone 7960 Administrator Guide
78-10497-02
Appendix A SIP Compliance with RFC-2543 Information
SIP Header Fields
Authorization Yes
Call-ID Yes
Contact Yes
Content-Encoding Yes
Content-Length Yes
Content-Type Yes
Cseq Yes
Date Yes
Encryption No
Expires Yes
From Yes
Hide No
Max-Forwards Yes
Organization No
Priority No
Proxy-Authenticate Yes
Proxy-Authorization Yes
Proxy-Require Yes
ReBy Yes
Record-Route Yes
Require Yes
Response-Key No
Retry-After Yes
Route Yes
Header Field Supported?