04-18-2014 11:34 AM - edited 03-16-2019 10:30 PM
Solved! Go to Solution.
04-18-2014 03:32 PM
Thats correct to an extent. If you have CUCM, the signaling from phones go directly to CUCM. CUCM sits in the middle and acts as a proxy between the two endpoints. As soon as both phones are ready to send voice (ie. callee picks up, caller still wants to talk), the media (voice packets) is sent directly between the phones similar to any other data traffic in your network. Media doesnt flow through CUCM in most cases. The protocol used for signaling between phones and CUCM depends on the model of the phone and the configuration. It could be SCCP or SIP. However, there are no SIP trunks in the mix. SIP trunks are used to connect to other systems or the provider but not to phones.
HTH
04-18-2014 03:32 PM
Thats correct to an extent. If you have CUCM, the signaling from phones go directly to CUCM. CUCM sits in the middle and acts as a proxy between the two endpoints. As soon as both phones are ready to send voice (ie. callee picks up, caller still wants to talk), the media (voice packets) is sent directly between the phones similar to any other data traffic in your network. Media doesnt flow through CUCM in most cases. The protocol used for signaling between phones and CUCM depends on the model of the phone and the configuration. It could be SCCP or SIP. However, there are no SIP trunks in the mix. SIP trunks are used to connect to other systems or the provider but not to phones.
HTH
04-19-2014 09:13 PM
Sweet, that's how I imagined it working. Thanks for your response.
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