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Cisco SIP IP Phone 7960 Administrator Guide
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Appendix B SIP Call Flows
Call Flow Scenarios for Failed Calls
Gateway-to-Cisco SIP IP Phone—Client, Server, or Global Error
Figure B-15 illustrates an unsuccessful call in which User A initiates a call to
User B and receives a class 4xx, 5xx, or 6xx response.
Figure B-15 Gateway-to-Cisco SIP IP Phone—Client, Server, or Global Error
IP
SIP IP Phone
User B
3. Call Proceeding
6. Disconnect
1. Setup
PBX A
User A
GW1
IP Network
4. 100 Trying
5. 4xx/5xx/6xx Failure
8. ACK
2. INVITE
9. Release Complete
7. Release
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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 ...