Re: [hylafax-users] IAXmodem + Hylafax receive problem

[Bryan Roberts <broberts@xxxxxxxxxxxxxxxxx>]

That's kind of what I was afraid of (line quality issues).  The inbound 
line is a SIP channel from our VoIP provider (currently no zaptel 
hardware installed...ztdummy provides the iax trunk timing).  Is this 
scenario even possible?  I can install a digium zaptel card if it would 
help, but I don't have a POTS circuit at this location to provide timing 
with.

Once again, thanks for any and all help.



Lee Howard wrote:
> Bryan Roberts wrote:
> > May 02 14:12:51.70: [ 3136]: <-- [9:AT+FTH=3\r]
> > May 02 14:12:51.72: [ 3136]: --> [7:CONNECT]
> > May 02 14:12:51.72: [ 3136]: <-- data [35]
> > May 02 14:12:51.72: [ 3136]: <-- data [2]
> > May 02 14:12:53.76: [ 3136]: --> [2:OK]
> > May 02 14:12:53.76: [ 3136]: RECV send PPR (partial page request)
> > May 02 14:12:53.76: [ 3136]: <-- [11:AT+FRM=146\r]
> > May 02 14:12:54.36: [ 3136]: --> [6:+FRH:3]
> > May 02 14:12:54.36: [ 3136]: --> [7:CONNECT]
> > May 02 14:12:55.52: [ 3136]: --> HDLC<9:FF C8 FD F2 40 00 04 29 12>
> > May 02 14:12:55.62: [ 3136]: --> [2:OK]
> > May 02 14:12:55.62: [ 3136]: RECV recv PPS (partial page signal)
> > May 02 14:12:55.62: [ 3136]: RECV recv MPS (more pages, same document)
>
> Each case may be different, but in this case there's enough audio 
> corruption going on that the modem is having difficulty training on 
> the high-speed carrier.  The sender recognizes this, and eventually 
> gives up.
>
> So the question isn't really a HylaFAX one but rather one dealing with 
> your Asterisk setup.  Why is the audio getting corrupted?
>
> What kind of zaptel hardware are you using?
>
> Thanks,
>
> Lee.


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