On Wed, 23 Feb 2005, Kevin P. Fleming wrote: > Peter Svensson wrote: > > > Yellow alarm is the same as "remote alarm" - i.e. the other side is saying > > that it cannot hear you. Given the Loss Of Framing on the other end this > > seems resonable. > > Actually, "yellow alarm" is most frequently generated when the link > (physical layer) is up and running, but the circuit (logical layer) is > not "up" (administratively).
Yellow alarm means that the "Alarm Indication" bit is set in the received syncronization frame from the far end equipment. As far as I know (and can tell from Cisco etc) the AI is most often set on incoming red alarm, i.e. loss of signal. > LOF usually generates "red alarm" in my experience if left uncorrected :-) LOF would generate a local red alarm and a yellow alarm at the other end, if that path is working. What the original poster is seeing could be as simple as one pair being bad. I think a slightly broken rx pair from the remote equipment to his Asterisk box would create this pattern of alarm. Of course, it could be a broken E1 card as well at either end. I'd try placing a loopback plug at various places, facing either way, along the path between the two pieces of equipment. Peter _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
