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Cisco SIP IP Phone 7960 Administrator Guide
78-10497-02
A P P E N D I X
B
SIP Call Flows
SIP uses six 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.
•
OPTIONS—Queries the capabilities of servers.
•
REGISTER—Registers the address listed in the To header field with a SIP
server.
The following types of responses are used by SIP and generated by the Cisco SIP
gateway:
•
SIP 1xx—Informational Responses
•
SIP 2xx—Successful Responses
•
SIP 3xx—Redirection Responses
•
SIP 4xx—Client Failure Responses
•
SIP 5xx—Server Failure Responses
•
SIP 6xx—Global Failure Responses
Содержание Cisco 7960
Страница 8: ...Contents viii Cisco SIP IP Phone 7960 Administrator Guide 78 10497 02 G L O S S A R Y I N D E X ...
Страница 18: ...About This Guide Obtaining Technical Assistance xviii Cisco SIP IP Phone 7960 Administrator Guide 78 10497 02 ...
Страница 192: ...Appendix D Translated Safety Warnings D 8 Cisco SIP IP Phone 7960 Administrator Guide 78 10497 02 ...
Страница 200: ...Glossary 8 Cisco SIP IP Phone 7960 Administrator Guide 78 10497 02 ...