What is the minimum number of H.225 messages required to establish an H.323 call with bidirectional media?
Which user inputs are sent from the calling IP phone to the Cisco Unified Communications Manager, in the form of SCCP messages, after the user takes the phone off-hook?
Which SIP message header is used to tunnel QSIG messages across the SIP network when the OGW receives a call bound for the TGW?
Which SIP response message should the TGW send if it cannot process the tunneled QSIG messages from the OGW?
Which SIP message element is mapped to QSIG FACILITY messages being tunneled across a SIP trunk between two Cisco IOS gateways?
Which option describes the method used by Cisco IOS gateways to tunnel QSIG signaling messages in H.323 protocol?
which call routing practice is critical to prevent unnecessary toll charges caused by internal calls routed through the PSTN?