Consoling Cisco IP Phone 7940

mohammedmahmoud · ‎08-17-2005

Dear All,

I prepared a console cable as stated on the cisco website, but it didn't work, is there any extra configuration needed to be done to console the Phone ?

Thanks in advance.

agopala · ‎08-18-2005

Ok! if you have a phone cable that has only 4 wires, remember the first wire is actually wire number 2. The reason for this is because there are suppposed to be 6 wires in the phone cable, but only 4 are used..for this reason, all phone cables in the market today have only 4 wires.

Hope this helps

mohammedmahmoud · ‎08-21-2005

Hi Ashok,

Thanks for your fast response.

I am using the PIN assignment from Cisco:

RJ-11 --> RJ-45

2 --> 6

3 --> 4

4 --> 3

but still i get nothing !

Is there something i've missed ?

Thanks in advance.

mohammedmahmoud · ‎08-22-2005

Hi Ashok,

Can you please feedback my last post.

Thanks in advance.

agopala · ‎08-22-2005

Mo,

Can you please attach a picture of the exact connections? I mean, show me how you are counting 1 -6 on both sides. Thanks!

mohammedmahmoud · ‎08-23-2005

Hi Ashok,

Attached is a diagram that i've drawn for the console cable.

Thanks, and waiting for your reply.

agopala · ‎08-23-2005

ok i see the problem..

look at your pins on the RJ11.

currently it is like this: 1 2 3 4

It should be like this: 1 2 3 4 5 6

Note that there are only 4 wires on the RJ11 plug. Pin 1 and 6 are not provided (because it is never used).. So, the left most pin is actually pin number 2..

mohammedmahmoud · ‎08-23-2005

Ok, i see, thanks very very very much.

I hope i didn't bother you.

regards,

Mohammed Mahmoud.