Which type of search message appears in the Cisco TelePresence Video Communication Server search history page when it receives a H.323 call from a RAS-enabled endpoint that originates from an external

The correct answer is C. LRQ. An LRQ (Location Request) is the H.323 RAS message used when a gatekeeper (or VCS) receives an inquiry from an external zone to locate an endpoint. When a RAS-enabled endpoint in an external zone initiates a call, its local gatekeeper sends an LRQ to the VCS to determine whether

Signaling and Call Control Protocols

Question

Which type of search message appears in the Cisco TelePresence Video Communication Server search history page when it receives a H.323 call from a RAS-enabled endpoint that originates from an external zone?

Options

AARQ
BSETUP
CLRQ
DINVITE

How the community answered

(49 responses)

A
4% (2)
B
2% (1)
C
92% (45)
D
2% (1)

Explanation

An LRQ (Location Request) is the H.323 RAS message used when a gatekeeper (or VCS) receives an inquiry from an external zone to locate an endpoint. When a RAS-enabled endpoint in an external zone initiates a call, its local gatekeeper sends an LRQ to the VCS to determine whether the destination is registered there. This differs from an ARQ (Admission Request), which is sent by a locally registered endpoint asking its own gatekeeper for call admission. SETUP and INVITE are call-signaling messages (H.323 and SIP respectively), not RAS search messages.

Topics

#H.323 Signaling#Cisco VCS#RAS Protocol#Call Control Messages

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