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Chapter 1
Using the Cisco Voice Gateway 200
Using a Cisco VG200 Gateway with H.323
Figure 1-8
Linking PBX Users with E&M Trunk Lines Example
IP cloud
Gateway 1
Gateway 2
San Jose
Salt Lake City
(408)
(801)
This example assumes that the company already has established a working IP
connection between its two remote offices. PBXs should be configured to pass all
DTMF signals to the gateway. Cisco recommends that you do not configure
"store-and-forward" tone.
Note
If you change the gain or the telephony port, make sure that the
telephony port still accepts DTMF signals.
Direct-Inward Dialing on a BRI Port
The following example shows how to configure a BRI port for direct-inward
dialing (DID). This configuration allows the called number information from the
ISDN Q.931 setup message to be used for routing on an ISDN line.
In this example, a call comes in to gateway 1 on the BRI port. The DID
information allows the gateway to route the call based on the called number. If the
called number is 2xxx, the call is routed to gateway 2000, and if the called number
is 3xxx, the call is routed to gateway 3000.
Figure 1-9 illustrates the topology of this connection example.
Software Configuration Guide for the Cisco VG200
1-13
78-10322-02
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