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OOB Configuration of Cisco router via USR V.92 modem.

Posted on 2007-03-26
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Last Modified: 2013-01-24
Hi there
I have a USR5686E modem and a cisco 2800 router.
I would like to configure the router through the console port by dialling into the modem.

Would the command syntax in this guide:

http://www-tss.cisco.com/eservice/compass/common/tasks/task_verikit_configure_USRmodem.htm

work with my modem, too? or is this for older usr modems?
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Question by:eggster34
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Expert Comment

by:lrmoore
ID: 18793118
Yes, it should work for any USR modem
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Author Comment

by:eggster34
ID: 18794231
but the instructions you have specified in one of your posts are different from the cisco ones.
do you say that both would work?
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Author Comment

by:eggster34
ID: 18794525
can you confirm if a CAB-500RJ= cable is a rolled cable or not?
the reason I'm asking is that, I have a grey cable marked CAB-500RJ= which came with a router, and it's NOT a rolled cable, it's a straight through cable.

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lrmoore earned 500 total points
ID: 18795557
This is the init sting that I use for USR modems (cut/paste directly from here)
ATE0F1Q1&I0&H0&K0&A0&B1&N6&C1&D0&W0

CAB-500RJ=
Looks like this is a standard network cable, not a rolled cable. The rolled cables are the flat ones that are either baby blue or black and come with most every Cisco product.
You might have to find the right 25-pin/RJ-45 adapter to connect to the modem.
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Author Comment

by:eggster34
ID: 18799031
ok I found the right cable and the right adapter, and a very interesting thing happens:

when the modem is connected to the router via the rollover cable, the modem auto answers for 1 second only and the line drops!
when the modem is connected to the router via a standard straight through network cable, OR when it's not connected to the router at all, the modem autanswers ok and establishes a connection.
after the connection is established, if you connect the rollover cable between the modem and the router it's possible to access the router through the console port! what do you make of this?
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Expert Comment

by:lrmoore
ID: 18799453
Sounds like maybe not the right 25-pin adapter..
Did you add any configuration to the router on the console line?
Did you set Hyperterm to only connect at 9600?

Which init string did you use? The one in the first document, or the one I posted?
Can you compare ATI4 output to the below, which is correct and working modem:

B0  E1  F1  M1  Q0  V1  X4  Y0    BAUD=9600  PARITY=N  WORDLEN=8    DIAL=TONE    ON HOOK   CID=0     &A3  &B1  &C1  &D0  &G0  &H1  &I0  &K1    &M4  &N0  &P0  &R2  &S0  &T5  &U0  &Y1
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Author Comment

by:eggster34
ID: 18803292
before issuing that command:

ati4
U.S. Robotics 56K FAX EXT Settings...

   B0  E1  F1  M1  Q0  V1  X1  Y0
   BAUD=9600  PARITY=N  WORDLEN=8
   DIAL=TONE    ON HOOK   CID=0

   &A1  &B0  &C1  &D0  &G0  &H0  &I0  &K0
   &M4  &N6  &P1  &R1  &S0  &T5  &U6  &Y1  

   S00=001  S01=000  S02=043  S03=013  S04=010  S05=008  S06=004
   S07=060  S08=002  S09=006  S10=014  S11=070  S12=050  S13=000
   S15=000  S16=000  S18=000  S19=000  S21=010  S22=017  S23=019
   S25=005  S27=000  S28=008  S29=020  S30=000  S31=128  S32=002
   S33=000  S34=000  S35=000  S36=014  S38=000  S39=000  S40=001
   S41=000  S42=010
 
   LAST DIALED #:

OK


after:

ATE0F1Q1&I0&H0&K0&A0&B1&N6&C1&D0&W0

U.S. Robotics 56K FAX EXT Settings...

   B0  E0  F1  M1  Q1  V1  X1  Y0
   BAUD=9600  PARITY=N  WORDLEN=8
   DIAL=TONE    ON HOOK   CID=0

   &A0  &B1  &C1  &D0  &G0  &H0  &I0  &K0
   &M4  &N6  &P1  &R1  &S0  &T5  &U6  &Y1  

   S00=001  S01=000  S02=043  S03=013  S04=010  S05=008  S06=004
   S07=060  S08=002  S09=006  S10=014  S11=070  S12=050  S13=000
   S15=000  S16=000  S18=000  S19=000  S21=010  S22=017  S23=019
   S25=005  S27=000  S28=008  S29=020  S30=000  S31=128  S32=002
   S33=000  S34=000  S35=000  S36=014  S38=000  S39=000  S40=001
   S41=000  S42=010
 
   LAST DIALED #:
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LVL 79

Expert Comment

by:lrmoore
ID: 18803508
They don't quite match what I would expect. Does this modem have the dip switches on it? Did you follow the dip switch setting procedures?

>B0  E0  F1  M1  Q1  V1  X1  Y0
                                       X4  <== I have X4 (could be different model # modem)

&M4  &N6  &P1  &R1  &S0  &T5  &U6  &Y1  <=yours
&M4  &N6  &P0  &R2  &S0  &T5  &U0  &Y1  <=mine
                   ^^   ^^
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Author Comment

by:eggster34
ID: 18905261
it turned out to be a cable problem. everything is working ok now. thanks.
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