User guide

Chapter 5 – Configuring the Phone Book

MultiVOIP® Voice/Fax over IP Gateways 93

PSTN Failover Feature. You can program the MultiVOIP to divert calls to the PSTN temporarily if the IP network

fails. The following figure provides an example.

Inbound Phone Book/List Entries

The Details group and the Registration Options group display information about selected setup options and

protocols. The Subscription Options group is used with a Voice Mail Server.

NETWORK

FXS

FXO

VOIP

PBX

PSTN Line

1. Call originates.

2. IP network fails.

3. Call diverts to

Alt IP address in voip

accessing PSTN line.

4. Call completed

via PSTN.