[asterisk-users] Asterisk stops accepting calls

[Laurent CARON]

Hi,

I've got a serious problems.

I have an * box set up at a custommer office.

* seems to work well until this message appears when i try to call from 
the outside to any number managed by *

Jul  7 17:12:08 WARNING[8792]: chan_zap.c:9256 pri_dchannel: Ring 
requested on channel 0/1 already in use on span 2. Hanging up owner.

Do anyone have a clue about it, as restarting * more often than not is 
not a really good solution?

Thanks

Laurent