Just like you said ip phone to ip phone SCCP signling goes thru callmanager, and RTP goes directly between the phones.
For PSTN call the Geteway is configured either as MGCP or H.323, the MGCP or H.323 goes between the gateway and the CallManager, and SCCP traffic from CallManager to IP phone, the RTP stream goes between IP phone and Gateway. Voice GW converts the voice signaling into your digital or analog signaling such as PRI, CAS, etc.
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...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...