Which RAS message is used between two gatekeepers to resolve an alias address?

A.
GRQ

B.
ARQ

C.
IRQ

D.
LRQ

E.
RRQ

Explanation:
LRQ — These messages are exchanged between gatekeepers and are used for inter-zone (remote
zone) calls. For example, gatekeeper A receives an ARQ from a local zone gateway requesting call
admission for a remote zone device. Gatekeeper A then sends an LRQ message to gatekeeper B.
Gatekeeper B replies to the LRQ message with either a Location Confirm (LCF) or Location Reject
(LRJ) message, which depends on whether it is configured to admit or reject the inter-zone call
request and whether the requested resource is registered.