Dialogic 4000 SERIES Instrukcja Użytkownika Pobierz pdf (Strona 114)

Dialogic

4000 Media Gateway Series Reference Guide

Page 114

Using the Gateway Computer Between the PSTN and PBX/Microsoft

Office Communications Server

2007

This configuration scenario describes the necessary steps if the gateway computer is connected between the

PSTN and PBX/Microsoft

Office Communications Server 2007. This way, Diva SIPcontrol can also route calls

from the PBX to the PSTN, and vice versa. One PRI line is connected to the PBX and one PRI line is connected

directly to the PSTN. This scenario also assumes that the PBX was previously connected to the PSTN directly

and the PBX has not been reconfigured at all to cope with any changes introduced by the gateway or Microsoft

Office Communications Server 2007.

The Microsoft

Mediation Server is installed on the gateway computer. The PBX is configured for the extensions

starting with 2 or 3, and the Microsoft

Office Communications Server 2007 is configured for the extensions

starting with 4 or 5. Diva SIPcontrol expects a PSTN access code in calls from Microsoft

Office Communications

Server 2007 to the PSTN or from the PBX to the PSTN; in the following example, it is an additional 0 (zero).

Diva SIPcontrol is configured to remove the access code before forwarding the call to the PSTN. For convenience,

Diva SIPcontrol is also configured to add the outside access code to the calling number in calls coming from the

PSTN. Since the PBX is not aware of the presence of the gateway and Microsoft

Office Communications Server

2007, it does not send or expect to receive any outside access code. Therefore, Diva SIPcontrol also removes

the outside access code in calls to the PBX and adds it in calls from PBX.

For this configuration scenario, one dialplan, five address maps, the two PSTN interfaces, the network interface,

two SIP peers, and five routes need to be configured.

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