To connect calls to outside world basically you need to have some type of trunk (E1/T1/FXO/SIP Trunking) between ISP & CME router and when you will have this then you will get a DID from service provider and you can use these to connect with outside world's phones.
And for this you need to create dial-peers in CME to route external calls to trunk/ISP.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...