denial event 2011: IP FURQ-No Q931 msg rcvd

[Davicat]

Hello,

For some reason, all phones in a location suddenly stopped working,in theory here has been no changes either in the avaya CM and the network.

I have been reading some documents even from avaya and in every post, it's the network fault for one reason or for another.

I'm mainly following this post of avaya

https://support.avaya.com/public/index?page=content&id=SOLN261885&group=UG_PUBLIC

but I haven't managed to see where the problem lays, as my network coworkers are saying that the problem is on the avaya server.

This is the trace of the registration process:

time data
switch [10.128.X.X]:1719
08:44:05 rcv RRQ ext 1049361XXX
endpt [10.234.X.X]:49302
switch [10.128.X.X]:1719
08:44:05 snd RCF ext 1049361XXX
endpt [10.234.X.X]:49302
switch [10.128.X.X]:1719
08:44:05 TCP connected (ne)
endpt [10.234.X.X]:1720
switch [10.128.X.X]:61441
08:45:05 denial event 2011: IP FURQ-No Q931 msg rcvd
endpt 10.234.X.X data0:0x9368

Anyone has any suggestion on what it could be?

Many thanks

 

[Davicat]

The problem was MTU at provider side, set up at 1380