From: robbie (robbie@packetized.org)
Date: Thu Jul 08 2004 - 09:18:14 GMT-3
ISDN BRI uses pins 3, 4, 5, and 6 - the 4 center pins on an RJ-45
connector.
This page has more information on the precise pinouts for S/T vs. U port
pinouts:
http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a0080094b76.shtml
HTH,
Robbie
Rohan Grover wrote:
> Hi,
>
> Ok, so Ethernet uses 1,2,3,6
> T1/E1 use 1,2,4,5
>
> Any idea what pins ISDN BRI uses?
>
> Thanks
> Rohan
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of robbie
> Sent: Thursday, July 08, 2004 7:44 AM
> To: ccielab@groupstudy.com
> Subject: Re: ATM Back-to-Back Config
>
>
> Since this is something with which I deal every day (and consequently
> something near and dear that I feel all CCIE's should at least have a
> LITTLE knowledge of)...
>
> T1s use pins 1, 2, 4, and 5 (well, they do here in the US anyhow - E1s
> elsewhere use the same pinconfig IIRC).
>
> 1 -> 4 (-RX to -TX)
> 2 -> 5 (+RX to +TX)
> 4 -> 1 (-TX to -RX)
> 5 -> 2 (+TX to +RX)
>
> +/- are also known as 'tip' and 'ring', respectively.
>
> HTH,
> Robbie
>
>
> Alfred Chin wrote:
>
>
>>Try using the console cable instead. It works for me.
>>
>>-----Original Message-----
>>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>>Of Jose Mujica
>>Sent: Wednesday, July 07, 2004 3:47 PM
>>To: ccielab@groupstudy.com
>>Subject: ATM Back-to-Back Config
>>
>>HI.
>>
>> I have two 2600 routers each with an NM-1ATM-25 atm card. I would
>>like to do a back-to-back configuration but the interface still down,
>>down. I look at CCO
>>sample configs and I'm using exactly the same configuration without any
>>luck.
>>
>>I'm using 12.2(15)T12 on both routers... Here the configuration I'm
>>using:
>>
>>R1:
>>
>>interface ATM1/0
>> ip address 192.168.1.20 255.255.255.0
>> map-group atm-in
>> atm clock INTERNAL
>> atm pvc 1 1 5 aal5snap
>> atm ilmi-keepalive
>> no atm address-registration
>>!
>>map-list atm-in
>> ip 192.168.1.10 atm-vc 1 broadcast
>>!
>>
>>
>>R2:
>>
>>interface ATM1/0
>> ip address 192.168.1.10 255.255.255.0
>> map-group atm-in
>> atm clock INTERNAL
>> atm pvc 1 1 5 aal5snap
>> atm ilmi-keepalive
>>!
>>map-list atm-in
>> ip 192.168.1.20 atm-vc 1 broadcast
>>!
>>
>>I tried with standard ethernet cables (i.e. straight and cross
>>cables)..
>>
>>Am I missing something else?
>>
>>Thanks in advanced,
>>-Jose
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