Callback problem between Cisco and Ascend routers

[zaza230]

does anybody know if callback work well between cisco 1700 and a ascend pipeline 50.

I'm trying to setting up a callback but it doesn't work. what happen is :
1 - the ascend router initiate the call
2 - the cisco router doesn't close the first call initiated by the ascend router,
3 - the cisco router keep the first call, and initiate the callback on the second channel.
when I type the command show isdn active, I see 2 active connection "IN" and "OUT". Normally I should seeonly one active connection "OUT".
If only one channel is available on the ascend router ( for example one channel is alredady used to connect to another device (not the cisco one), the first call can be initiated but the callback doesn't work.
How can I force the cisco router to close immediately the first call ?
is there specific interface command to use to perform a callback with a non-cisco device such as ascend ? if anybody have a example configuration which work with ascend, thanks to show it.
thank in advance for you help !

jean-philippe

 

[routerman]

This maybe due to the Cisco router interesting traffic definition, do you see traffic on the initial link when the second call has come up?
I seem to recall having a few PPP call back problems, even with Cisco to Cisco, take off any compression and multilink commands.
If you call in from the Ascend with out call back does the link pass traffic without problem?

Can you post the cisco BRI.dialer and Interesting traffic statements?