Round robbin 'g FXO ports

Unanswered Question
May 12th, 2010


I'd like to know how to route calls through various FXO ports in a round-robbin fashion.

The default way to work is "first-available", but I have two cell-land-lines that I'd like to use in a balanced manner, because the first one is ending its minutes quickly and I have to swap them manually after a couple of weeks.

Thanks for your answers.


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William Bell Wed, 05/12/2010 - 19:46


What signaling protocol are you using?  If using dial-peers on your voice gateway (h323 or sip) then maybe something like this:


trunk group myfxo

hunt-scheme round-robin


voice-port 0/1/0

description fxo line 1

trunk-group myfxo


voice-port 0/1/1

description fxo line 2

trunk-group myfxo


dial-peer voice pots

description offnet to whatever

trunkgroup myfxo


If you are using CUCM and MGCP, then look at Route Group configs.



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javierfonseca Thu, 05/13/2010 - 06:35

I've tried the hunt-scheme round-robbin command, but it doesn't seems to work.

Maybe for a T1/E1 it could work (I haven't tried it), because a T1/E1 has several channels, but it looks like a FXO port is only one channel itself and it always goes from "voice-port 0/1/0 channel 1" back to "voice-port 0/1/0 channel 1" without moving to the second port.... or something like that.

Any other suggestion?




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