1. Can I register a SIP phone with CM? I'm not sure this is even possible. To my limited (very limited) understanding, SIP doesn't require the functionality of a CM as it does it itself. However, is there any way my Skinny regular 7960 IP phone can call the SIP phone on my PDA (both on the same network)?
2. If yes to above, how do you set up a SIP phone in CM?
Any general or specific advice on this topic is appreciated.
No, you can't register SIP Phone with CM. CM use SCCP. You need a SIP Server to do that. You may have read CM support SIP, but it is a SIP trunk. You still need a SIP Server to cummunicate between SIP Phone and SCCP Phone
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