Multitech MultiVOIP GSM SIP-to-Cellular Gateways MVPGSM-2 Guia do Utilizador descarregar pdf (Página 82)

Chapter 5: Phone Book Configuration

Multi-Tech Systems, Inc. MVPGSM 82

Local Survivability

In cases where the connectivity to the network is not available (no response received from the IP

Address/URL set in Local Survivability – Link Monitor Details), Local Survivability can route calls strictly

through the available entries found in the Inbound and Outbound Phone Books. IP Survivability utilizes the

Outbound Phone Book for call routing while Internal Survivability uses the Inbound Phone Book.

IP Survivability Example: You have an MVPGSM with Channel 1 using SIP extension 301 and Channel 2 using

SIP extension 302. A GSM call is received on Channel 1 and is intended for a remote office (809) represented

by the black arrows. Unfortunately, the survivability destination on the Internet is not responding, so Local

Survivability mode is processed, represented by the red arrows. With the survivability link monitor reporting

no connectivity, IP Survivability routes the call to the IP Phone at extension 356 as this is the route set for

survivability. There needs to be an Outbound Phone Book entry associated with this.

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Multitech MultiVOIP GSM SIP-to-Cellular Gateways MVPGSM-2 Guia do Utilizador Página 82