From: André Bersvendsen (an-bersv@xxxxxxxxx)
Date: Sat Apr 06 2002 - 12:50:39 GMT-3
Hi Richard,
I have no problem when I use more than one BRI interface on an ISDN
line.
It is possible to call from one router to another on the same line.
You have to assign witch number the router shall answer to. It is as you
mention the command 'isdn answer1 <num>' you must use.
You can however get a problem if you are configuring ISDN callback
(based on the telephone number). The problem is that RouterA is seting
up a call to RouterB and the ISDN switch will give RouterA one B-channel
and RouterB the other (not used but signaled to be used when call is set
up). RouterB reject the call. Then RouterB want to call back to RouterA.
In this situation the switch might not be ready to handle this. - The
B-channels are not available yet. After some retries you will normally
get the expected callback.
(Observe this with debug isdn q931)
Regards,
Andri Bersvendsen
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Richard Furda
Sent: 6. april 2002 09:14
To: CCIE Lab
Subject: 1 BRI and 2 routers
Hello,
Has anyone successfully used 1 BRI line with 2 routers?
More preciselly, calling one router (on 1 B channel) from other
router (on the second B channel)? I've been assiged 3 phone numbers
for this line. Almost identical output (healthy call setup) from
'debug isdn q931' is shown on both routers when one of the 3 numbers is
called. I haven't got deep into the ISDN dialer configs yet, just
wondering before i start. I believe 'isdn answer1 <num>' is the answer
to my question?
Thanks,
Rich
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