Asterisk, Digium TE121B on E1/R2 line setup

Posted on 2009-04-20
Last Modified: 2013-11-12
Hello all,

we would like to ask for your assistance.
here is our setup:

Redhat 5.2
Asterisk 1.6 (OpenR2 patched from
DAHDI linux
DAHDI tools

Hardware: Digium TE121B
Digital line: E1/R2


we followed the guide "openr2-guide-0.1.pdf"

we also plug a loopback cable (shorting pin 1 and 4, pin 2 and 5) on the digium card
and we got a green LED. the test commands has no error outputs.
but  when inserting the E1/R2 line, we always get a red LED.

we have read that with only DAHDI running and the configuration
of system.conf above, we should be able to get a green LED.

is there a problem with our setup or at the telco's side?
if you have this experienced please share and advise.

Thank you very much.
Question by:sy_geoffrey
    LVL 9

    Expert Comment

    LVL 6

    Accepted Solution

    Blinking red or permanent red?

    Author Comment

    we were provided with a E1/R2 straight-through cable.
    the card's LED is blinking red.

    we found out that it was a problem in the telco's side.
    they did a test and now it's working (green LED).

    will post again if we encounter another problem.
    thanks for your replies.

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