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New Member

3640 + MICA-6DM

I want to setup dialin server with 3640+mica-6dm

there are also 4 ports BRI

the router run with:

1 3721120 c3640-i-mz.120-7.bin

2 474939 mica-modem-pw.

but when I try to connect woth analog modem

the router doesn't respond just hear sound "click".

and there is no "indonesia" in modem country mica <c>

I already refer the setup just like:

but still doesn't work.

Does anybody can help? Thanks in advance


Re: 3640 + MICA-6DM

Often times complex troubleshooting issues are best addressed in an interactive session with one of our trained technical assistance engineers. While other forum users may be able to help, it’s often difficult to do so for this type of issue.

To utilize the resources at our Technical Assistance Center, please visit and to open a case with one of our TAC engineers, visit

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.


Re: 3640 + MICA-6DM

You were just a "T" short of getting it to work.

Modem over BRI is a 12.0T feature. Mainline 12.0

does not support it. So if you had 12.0(7)T instead

of 12.0(7), you could have gotten it to work.

For more info, see :

New Member

Re: 3640 + MICA-6DM

Thanks it works on analog calls now...

but it fail when I try to dial from BRI :(

when I use 12.0(7) BRI call run normally

so what version should I use??

Cisco Employee

Re: 3640 + MICA-6DM

The BRI calls should work too with that ios..The following debug for a bri call will be helpful to find the problem.

debug isdn q931

debug ppp authentication

debug ppp negotiation

Pl. port it with the running cofig..Also you can take a help from cisco's TAC engineers to debug this issue by visiting



Re: 3640 + MICA-6DM

Continue to use 12.0(7)T and lets debug the isdn callin problem.

For that, pls provide isdn & ppp debugs.

New Member

Re: 3640 + MICA-6DM

it's :)

I don't know after upgrade ios

line dialer rotary-group 0 is missing in BRI interface, after I add the missing line, it works...

thanks to all