Blind transfer problems IVS

[OzzieGeorge]

I have a customer who has a call forward no answer on her extension to her mobile phone. when a DID call comes in and goes unanswered it forwards as required. When an extension rings her it forwards as required. However when an extension transfers a call to her extension it just rings until it times out and goes back to the transferring extension. She claims (and I have no reason to doubt as she manages all telephone faults for the company) that it has worked in the past. I have checked all that I can think of (restrictions, timers, tandem connectivity and system settings) but I have drawn a blank. I even tried redirecting the forwards to PSTN in case the ISDN was a problem but to no avail.

I should add that if I stay with the transfer till the mobile starts ringing then hang up, the call works. So I am pretty sure it is a problem with blind transfer (I also tried a call forward all and if I hang up too early the call immediately recalls). If it was an IVS2 or later I could go directly to an 08 command that causes this problem but that command doesn't seem to exist in the IVS. I am not sure though that it is a programming issue, I am wondering if some feature has been set that is preventing the transferred call forwarding.

Any suggestions gratefully received.

 

[belevedere]

On the older IVS, the psudo answer timer could not go lower than 4-8 sec. I believe that if the transferring station waited at least 4 seconds it would work.
I always set 410>03 to the lowest setting available.

 

[OzzieGeorge]

Thank you I will check that! I suppose it is yet another cryptic command as it refers to SMDR timing!

 

[belevedere]

True. You cannot do a barge in until this timer is satisifed either.

 

[OzzieGeorge]

Unfortunately it didn't work, so back to the drawing board. It was set to 1 and I even tried it on 0 but to no avail.