TRENDnet VoIP Gateway, TVP- 221H manual Hunt Group, Address Table

TVP-221H User’s Guide

destination for the call is the telephony port where the call terminated. For calls initiated from telephony ports, the TVP-221H forwards the call to a remote TVP- 221H/TVP-221H via IP network, and the remote TVP-221H/TVP-221H terminates the call. The destination of the call is the remote TVP-221H/TVP- 224HR.

3.4Hunt Group

Instead of directly mapping a phone number to a destination, the ATPM first maps the phone number to a group of destinations known as a Hunt Group. A hunt

group is a group of destinations that are equivalent. For example, the customer support group of a company might have 20 people who can handle support calls. Access to customer support is through a single phone number but the next available support person is actually connected upon each incoming call. These 20 phones would be configured as a hunt group. A hunt group consists of a phone number and a list of destinations (members of the group). When an incoming phone number matches the phone number of the hunt group, the TVP-221H attempts to terminate the call at each of the destinations in the hunt group, one at a time until a call is successfully completed.

Every destination that can be reached by dialing a phone number is a member of at least one hunt group. When an address is presented to ATPM for lookup, the output is a hunt group ID number. As a second step, the hunt group ID is presented to ATPM to get the list of members. To effectively bypass the hunt group feature, simply assign a unique hunt group number to a single destination. In effect, the Hunt Group will just have this one member.

3.5Dial Plan

The dial plan is a database inside the TVP-221H that allows the ATPM to map telephone numbers dialed to IP addresses of remote VoIP Gateways. The dial plan consists of three tables; destination table, hunt group table and the address table. Users need to setup these tables in order for the TVP-221H to process calls to remote VoIP Gateways.

3.51Address Table

The address table maps a phone number to a hunt group. The table contains entries that specify the following information:

•Telephone number

•The hunt group the phone number maps to.

•The minimum number of digits to collect before the ATPM starts address lookup.

•The maximum number of digits the ATPM collects before it considers the dial string is complete.

•Number of digits forwarded to the destination.

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