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New Member

ISDN Switching between PRI and BRI interfaces

Hello,

I have a 2811 router which has one VWIC-1MFT-E1 connected to the PSTN, and one

VIC2-2BRI-NT/TE connected DIRECTLY to one router and one modem (not Cisco

ones). The 2811 is a H323 gateway that works properly for voice with

CallManager and Cisco IP Phones (whose reach external number through the PRI

interface).

The router and the modem (whose handle data) need to access to the PSTN through

the PRI interface (for remote maintenance purpose). I mean the 2811 needs to proceed the switching between its BRI interfaces and its PRI interface properly!!!

We’ve managed to make ISDN switching to work in our lab with one 3640 router

with two VIC2-2BRI-NT/TE (one connected to the PSTN and one directly connected

to a router). So, I don't know why it's not working with a 2811 and one PRI and one PRI???

Does someone know how to make this configuration working ?

Thanking you in advance,

Regards,

Benjamin

1 REPLY
New Member

Re: ISDN Switching between PRI and BRI interfaces

Additional information :

Our network topology network is as follow :

2811-PRI-PSTN

|

BRI

|

Modem&Router

You'll find enclosed the configuration file of the 2811 router and a debug Q931 when I try to make a call with the router connected on its BRI interface.

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