Chapter1 Overview of the CiscoIP PhoneModels 7905G and 7912G
Software Features
1-6
Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)
OL-4277-01
•Call transfer—attended and unattended
•Message-waiting indicator
Related Topics
•Protocols, page1-4
•Basic Services, page 1-5
•SIP-Specific Services, page1-6
SIP-Specific ServicesThe Cisco IP Phonemode ls 7905G and 7912G support the following SIP-specific
services:
•Direct IP dialing in addition to proxy-routed calls.
•Configurable periodic registration with a SIP proxy server.
•Authentication support for all SIP methods.
•Configurable NAT support.
•Configurable outbound proxy support.
•Local support for call return (or call back), call forwarding, and call transfer.
•FQDN for SIP proxy and outbound proxy.
•Uses the same configurable MediaPort to transmit and receive RTP audio.
•Out-of-Band DTMF via RFC2833 (also known as AVT tones).
•UDP for SIP signaling.
•Message-waiting indication (MWI) provided via the telephone-handset LED
lamp.
•Distinctive ringing support via the SIP Alert-Info header.
Related Topics
•Protocols, page1-4
•Basic Services, page 1-5
•Supplemental Services, page 1-5