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3640 - BRI - Digital Modems

Hi,

I am looking for someone who can help me with the following situation (maybe with an example config?):

Hardware: C3640 - 8 port BRI - 12 port Digital Modem card

An analog device dials in into one of the digital modems. This device has no knowledge of IP but can only send characters (startbit-data-stopbit-parity) over the line. The C3640 should accept these chars and forward it (encapsulated in IP) to an internal server that is listening on a specific tcp/upd port.

Can anyone help me out? Thanks in advance!!!

Kind Regards,

Tom

2 REPLIES
Cisco Employee

Re: 3640 - BRI - Digital Modems

You can use "autocommand telnet " feature under the line config..

So it works like this..

When DSR comes up after two modems connection established, router will execute the "autocommand ...." and initiate the character based connection on the specified ip address and port..

Here is the config for 3640 accepting modem connection

http://www.cisco.com/warp/public/471/bri_3640.html

Here is the way for autocommand config..Lets say you have

line 3 5

modem InOut

autocommand telnet 10.1.1.1

so when ever the modem connection will be made on line 3 to 5 the autocommand "telnet 10.1.1.1" will be initiated by the router and the control will be given back to the client from there onwards..You can also configure each line the way you need. I hope that helps

Re: 3640 - BRI - Digital Modems

Hi,

t

hanks for the reply!! I am able now to send chars to a host on a specific port.

Great!!

Thanks again!!

Kind Regards,

Tom

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