Apply this patch https://issues.asterisk.org/view.php?id=18868

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Sent from my iPhone

On May 9, 2011, at 9:57 PM, d tbsky <[email protected]> wrote:

hi:
   our current connection is below:

   sip phone<--->asterisk<---->alcatel PBX<---->PSTN

  asterisk and alcatel PBX is connected via  E1 isdn-pri.

  when I  use sip phone to dial outside PSTN world:
  1. with 1.4 it is fine.
  2. with 1.6.2, I need to set prematuremedia=no is sip.conf.  or sip
phone can not hear the ring and the beginning of the PSTN voice.
  3. with 1.8.3.2, I can not hear ring and the beginning of the PSTN
voice. I try to play options with "prematuremedia" and
"progressinband". but I can not find working settings.

  I don't know what other options I can try.
  thank a lot for information!!

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