Can not dial into Cisco 1602 via USR Modem

[TRSinNC]

Hello,

In about 20 days, I will need to configure a 1602 router in a different state. I have been testing with the same model router in my office. I purchased an External US Robotics 56k Fax Modem and thought it would not be that difficult to connect the router.

I have connected a straight through serial cable between my laptop com port and the modem and configured with the init string at&f0qle0s0=1&b0&n6&u6&m4&k0&w and set the dip switches 1,4,6,8 down. After this, I plugged the modem to one end of the straight through serial cable, connected the other end to a 25 - 9 pin adapter and then connected to a gender bender and then to the 9-pin to RJ45 connector that the blue console cable connects to. I dial into the modem, it connects but there is no proof that the modem is communicating with the router.

I have also swapped the straight though cable with a null modem cable and it didn't work either.

Can some one tell me if I need a special cable or need to make a change to the router configuration to allow remote access via modem?

I can connect the console cable to my laptop and access the router ios.

Any help is appreciated.

Thanks,
Tommy

 

[brianinms]

I would follow this document and use the AUX port instead.

http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a0080094bbc.shtml

 

[Supergrrover]

Change the dips as well.
dips 1,3,5,8 are up, all others down. I did this and it came right up on the console port.



Brent
Systems Engineer / Consultant
CCNP, CCSP

 

[TRSinNC]

This router does not have an AUX port so I have to use the console port.

I changed the dips as you suggested but now the modem doesn't establish a connection. Maybe we can compare the dip settings. My modem has the following listed on the bottom label:

1UP-DTR Normal
1DN-DTR Override
2UP-Verbal results codes
2DN-Numeric results codes
3UP-Suppress results codes
3DN-Display results codes
4UP-Echo offline commands
4DN-No Echo offline commands
5UP-Auto answer on
5DN-Auto answer off
6UP-Carrier detect normal
6DN-Carrier detect override
7UP-Load NVRAM defaults
7DN-Load factory defaults
8UP-Dumb mode
8DN-Smart mode

Here is the link I was using before posting:

http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a00800941c9.shtml

Just curious, since your setup is working, what type of cable configuration are you using between your modem and the console port?

Thanks,

Tommy

 

[TRSinNC]

I found the problem. It wasn't the modem. It was the cable configuration I was trying to use. I searched our phone room until I found the CISCO box and there I found the DB25-RJ45 "Modem" adapter and Satin cable. Thanks for the help anyway.

 

[Supergrrover]

Did your original dips work or did you use the alternate?
just curious..


Brent
Systems Engineer / Consultant
CCNP, CCSP

 

[TRSinNC]

I used the original dip switches and modem ini string.

I followed the instruction on the cicso page I posted earlier.