netgear17
Technical User
- Sep 11, 2008
- 5
Does anyone know if the Cisco IP Phones have implemented the standard set of telephony features using SIP?
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IP Phones and SIP
- Thread starter netgear17
- Start date
- Status
You need CallManager 5 or later though. CallManager 4 only supports SIP trunks.
I'd be keen on seeing peoples experience with SIP handsets on CallManager. I configured an Asterisk server last year to test a SIP trunk connection with CallManager 4 which all worked fine. I needed some handsets registered to the Asterisk server though to prove end-to-end connectivity and noticed there was no failover mechanism with the SIP handsets - i.e. when I shut the Asterisk server down the handsets still looked like they were registered. With SCCP there is a constant keepalive mechanism between the handsets and the server and you know when the server is down.
Andy
I'd be keen on seeing peoples experience with SIP handsets on CallManager. I configured an Asterisk server last year to test a SIP trunk connection with CallManager 4 which all worked fine. I needed some handsets registered to the Asterisk server though to prove end-to-end connectivity and noticed there was no failover mechanism with the SIP handsets - i.e. when I shut the Asterisk server down the handsets still looked like they were registered. With SCCP there is a constant keepalive mechanism between the handsets and the server and you know when the server is down.
Andy
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