CME phones can call into CCM1 phones.
Scenario 2: (Problem)
CCM1 IP phones not able to dial into CME IP Phones. When CCM1 phones call into CME phones, CME phones will ring, however, upon picking up the call at CME phones, CCM1 phones will continue to ring. It's as if CME phones is either
a) not telling CCM1 that he has picked up the call
b) some signalling that i've not configured.