[Asterisk-Users] IAX calls drop suddenly?

[TC]

>I've got asterisk working as a PSTN gateway between two sites.  The
>IP connection is pretty good and bandwidth exceeds 640Kbps all the
>time.  I'm using X100P hardware on 300Mhz and 333MHz systems.  One of
>them has a sound card, but the slower system does not have a sound
>card.  Both are connected to PBXes and I have busydetect=yes
Do the calls drop after they are bridged to PSTN ??
If so busydetect=yes or callprogress=yes is suspect
the logic on these flag can some times misinterpret the channel status & try
to hang up a channel