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.
IP
NETWORK
FXS
FXO
VOIP
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.
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