4.3.2.1 Gateway Groups
Description
It is possible to automatically reroute outgoing VoIP calls according to preassigned gateway groups.
A gateway device can be assigned a gateway group number based on its IP Address. When a call is made
using a leading number allocated to a gateway group, it is routed to the lowest-numbered available device
within that group. In other words, if the lowest-numbered device is busy or not available, the call slides to the
next available device.
[Example]
PBX
V-IPGW
Private IP
Network
IP Gateway(1)
IP Gateway(2)
IP Gateway(3)
IP Gateway(4)
Gateway Settings List
1. IP Gateway(1): GW Group-1
2. IP Gateway(2): GW Group-1
3. IP Gateway(3): GW Group-2
4. IP Gateway(4): GW Group-2
Office A (GW Group-1)
Dials "123XXX"
Office B (GW Group-2)
Busy
Rerouted
Leading Number
List
1. 1xx: GW Group-1
2. 2xx: GW Group-2
When "123XXX" is dialled, the call is routed to GW Group-1. However the lowest-numbered device (IP
Gateway(1)) is busy or not available, so the call is rerouted to IP Gateway
(2).
432 Feature Guide
4.3.2 Voice over Internet Protocol (VoIP) Network