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Two BRIs connected to one S0 Bus (mehrgeraete)

Hi everyone,

we have two BRI lines (NTBA) from a french Telco. Both BRIs are connected to a VIC-2BR on a 2801 Router.

The issue: both BRIs are in point-to-multipoint mode (Mehrgeraeteanschluss), that is an incoming ISDN call is

seen on both interfaces and the router will answere both simultaneously. The Telco switch rightly says: "Duplicate Frames....".

If I just connect one BRI line everything's fine (of course - apart form beeing able only to use  2 B channels instead of 4).

Does anyone know if it is possible to put both lines into operation?

Or do we need a different ISDN installation (Poitn-to-Point/Anlagenanschluss)

Many thanks,

Michael

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