09-12-2002 08:53 AM - edited 03-02-2019 01:19 AM
Have a 3640 with an NM-8AM and 8port Bri Module, the customer as added a digital modem pack to accomodate ISDN remote users.(With a view to change to a PRI circuit and removing 8AM) He requires callback to the digital modem users but cant get any of the configs to work. Callback works Ok with the analogue but not the digital. They can dial in but not get callback. Yes the windows client software is configured to accept callback also
Following is config for the digital callback
Username YYYY callback-dialstring XXXX password ZZZZZZ
interface BRI2/4
no ip address
dialer pool-member 3
isdn switch-type basic-net3
isdn incoming-voice modem
encapsulation ppp
ppp authentication ms-chap chap
ppp callback accept
interface DialerX
description Digital Modem Access User1
dialer string xxxx
ppp callback accept
dialer enable-timeout 2
dialer pool 3
ppp authentication ms-chap chap
Any Ideas
Paul
09-12-2002 10:28 AM
I assume that you want users using analog modem dialin to 3600 over bri line terminating on digital mica modems and get called back..
You need to create "interface group-async 1" and apply all the config there..
Once the call received on bri interface will be punt to modems on interface group-async x interface..
Here is a sample config for that.
http://www.cisco.com/warp/public/471/bri_3640.html
just enter the required callback commands under the interface group-async 1like documented under following url
http://www.cisco.com/warp/public/793/access_dial/async_ppp.html
09-17-2002 03:30 AM
The Async interface is there, to support this type of user, but the analogue users come in on the NM-8AM, the ISDN users are the only ones that come in on the BRI. Callback on the analogue is via the NM-8AM, callback for the ISDN user needs to be via the BRI. Will check the URLs though thanks for the advice
Paul
09-12-2002 02:13 PM
While there were problems long ago with callback and dialer profiles, they should be fixed in most 12.1 or 12.2 code. Your config looks OK, except that you need to add "dialer remote YYYY" to the dialer profile X so that you can bind correctly. Otherwise, you should check out "debug dialer", "debug 'ppp neg", and "debug isdn q931" (in that order) to try and see what else could be going on. As long as the DP binds correctly, the callback should at least be attempted. Also, don't forget to add "dialer-group" to the DP, too, in addition to an IP address.
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