Appendix; Sip Call Flows; Supported Sip Request Methods - Cisco 7905G Administrator's Manual

Supported SIP Request Methods

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SIP Call Flows

This appendix describes some basic call flows for the
Cisco IP Phone models 7905G and 7912G. It includes the following sections:
Supported SIP Request Methods, page C-1
•
Call Flow Scenarios for Successful Calls, page C-2
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The Cisco IP Phone supports the following SIP request methods:
INVITE—Indicates a user or service is being invited to participate in a call
•
session.
ACK—Confirms that the client has received a final response to an INVITE
•
request.
BYE—Terminates a call and can be sent by either the caller or the callee.
•
CANCEL—Cancels any pending searches but does not terminate a call that
•
has already been accepted.
REGISTER—Registers the address listed in the To header field with a SIP
•
proxy.
NOTIFY—Notifies the user of the status of a transfer using REFER. Also
•
used for remote reset and for message waiting.
OPTIONS—Provides requestors with SIP methods and codecs supported by
•
the phone.
Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)
A P P E N D I X
C
C-1