From the following list, identify three gateway control protocols.
What H.323 component is responsible for performing a "capabilities exchange" between H.323 terminals?
Which H.323 devices prevent bandwidth oversubscription on the WAN?
What message does an H.323 gateway send to an H.323 gatekeeper to request admission to the WAN?
Logical pieces of an MGCP network are called ________.
Which of the following is considered an MGCP component?
In a Cisco IP telephony network, what acts as an MGCP call agent?
Cisco voice-enabled router
Cisco voice-enabled switch
Which SIP component initiates a SIP connection by sending an INVITE message?
SIP proxy server
SIP redirect server
Identify the SIP server that informs the UA of the next server to contact.
SIP location server
SIP registrar server
What are the two types of SIP messages?