I am trying to automatically detect disconnected numbers when using the outbound dialer I have written.
* Some numbers hang up immediately with a Cause Code > 0 and no voice treatment * Some numbers get voice treatment with a PROGRESS indication and an associated Cause Code > 0 * Some numbers get voice treatment with a PROGRESS indication and no associated cause code (CC=0) My application can pick up the PROGRESS indication (if I get one) and handle the hangup, but not if I don't get a cause code! Is there anything I can do to ensure that I always get a PROGRESS indication with cause code or a hangup with cause code? Behaviour of the PRI seems to differ across telcos and also across numbers. I don't want to just assume hangup on PROGRESS indication as this may not be a disconnected number - it might be a forwarded or redirected number. I need to achieve consistency and this is proving very difficult. Has anyone else had this issue and if so, which tree should I be barking up? cheers, Mark. -- regards, Mark P. Edwards
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