User`s guide

PassFinder AP2520 VoIP Router/Gateway Operation Manual Version 1.10 / Mar. 2002
AddPac Technology Co., Ltd. -
185 -
5.3.4. Hunt Group-related Configuration
5.3.4.1. Basic Concept and Configuration
To select the outbound POTS that is going out of the router or to select the VoIP
dial peer, the user shall compare the called party number of the inbound call
and the destination pattern of the dial peer. At this time, more than one dial
peers corresponding to the called party number belong to a hunt group, and
dial peers of the hunt group attempts a call according to the given priorities.
In other words, the VoIP peer attempts a call to a dial peer of the hunt group
when the call is failed due to network connection failure, gatekeeper failure, or
gatekeeper rejection. And the POTS peer attempts a call to another dial peer
of the hunt group when the call is failed due to corresponding voice port’s
being busy. Factors deciding priorities to attempt calls in the hunt group
include the longest match, the explicit preference, the sequential, and the
random.
The longest match decides priorities by the maximum digits matched between
the origination number and the destination number of the dial peer. For
example, consider that the origination number is 5683848, the destination
number of dial peer 1 is 568T, the destination number of dial peer 2 is 568….,
the destination number of dial peer 3 is 56838.., and the destination number of
dial peer 4 is 5683848. Then, priorities of the dial peer by the longest match will
be in order of dial peer 4 → dial peer 3 → dial peer 2 → dial peer 1.
In the explicit preference, the order set in the preference of the dial peer
decides priorities. For example, consider that the preference of dial peer 1 is 3,
the preference of dial peer 2 is 2, the preference of dial peer 3 is 1, and
preference of dial peer 4 is 0. Then, priorities of the dial peer is in order of dial
peer 4 → dial peer 3 → dial peer 2 → dial peer 1.
The random decides the dial peer within the hunt group randomly.