mextera

NEC extension is busy, the trace on the other PBX says "idle" and the connection gets NU tone (solid tone).

Trace? Q931 trace? The messaging for ISDN is handled over the D-Channel. When the NEC extension is busy. It will return a message stating that. Its upto the originating office to return the Busy Tone.

Mextera

dmad

Hi matey

Well, we've been looking into the trace commands but not having much joy finding anything referencing them...namely

CMF62>07D
CMF62>1Sense
CMF62>3:0
CMF62>4:0
CMF62>0:19


We haven't yet tried these because as the manual jumps from F5 to F7, we can't be sure what they do!?

Probably our next home is a Q931 trend, but we have access to one on a very limited basis...

thanks!

mextera

Okay trace is out, F62 to hard to explain here.

Lets say the other PBX calls X2000 and its not busy it rings correct?
Try calling a station that is not defined in the NEC this would normally return a reorder. Does that happen?

Mextera

dmad

Hi

Yeah, normal calls over thw QSIG are fine. What this 'second pbx' does is it has virtual extensions on it which the end user is able to define a first, second and third choice of where to re-route calls.

So say 3001 is a virtual on the NEC PABX which sends all traffic straight to a matching virtual on PBX#2. An auto attendant when answers the call and attempts to put the caller through to a 'real' NEC extensions (say 2001).

If 2001 doesn't answer, the the call is retrieved back to PBX#2 and it will attempt the second choice, perhaps a mobile which is also directed back to the QSIG and out over PSTN (ISDN30).

What fails is when say 2001 is busy, the PBX#2 cannot detect it has been given a busy tone and the call hangs.

What we're not sure of at the moment is whether the problem is different if the 2nd destination is either another NEC extension or an external call...Can't see why that would make a difference when, to me the problem is with the two PBXs agreeing on what signifies a busy tone...

mextera

Agreed, I've been told that NEC has made great advances in Qsig because of Phillips in the UK. The once every two years I work with Qsig does no one any good.

bobcheese

Just wondering what system the 2nd PBX is? Does this system not have a trace facility that you can use?

On the topic of Q-sig in the UK im about a once every two years man myself!

dmad

Its somekind of soft PBX running using some kind of off-the-shelf QSIG cards....i think the trace is being pushed upon me to find on the NEC because their engineer feels the PBX is rejecting the call etc...

bobcheese

hate to say it but a trend tester would be my next stop if you have the correct module and cables you can sit on the connection and monitor the call being passed from pbx to pbx.

Rezen

"CMF62>07D
CMF62>1Sense
CMF62>3:0
CMF62>4:0
CMF62>0:19"

What is first and second data in "CMF62>07D" ?
What port is used for receiving trace data ?

Is it possible trace PRI, R2, H323 ?