Which role does Call Policy play when preventing toll fraud on Expressways?
What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?
Which statement about scheduling Expressway backups is true?
Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)
What allows endpoints behind a NAT to discover the paths through which they will pass media?
Which complication does a NAT introduce in SDP for a SIP call?
