I need to configue 79XX IP phones with Asterisk as SIP clientes. I do not know if I should add the SIP firmware to the phones or it is already added.
the phones was connected to CCM and registerd as SCCP, I do not know if the phone connected to the CCM and the phone did the first time upgrade. In this case does the phone download two Firmwares (SCCP and SIP) or just one.
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...