X.21 and G.703

Unanswered Question
May 1st, 2008


Any one has any idea on how to get the X.21 running at the protocol level using a G.703 interface.

One of our partners wants to deliver us a n E1 with X.21. What do i need to bring this up and running.



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Paolo Bevilacqua Thu, 05/01/2008 - 07:00

Hi, X.21 is physical interface, not really a protocol. If your partner insists on terminating the circuit via X.21, you provide a serial interface and a male dte x.21 cable. Else you get an E1 interface so you can eliminate the external converter and monitor the true perfomances of the circuit.

Hope this helps, please rate post if it does!


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