[Asterisk-Users] TxFax -> RxFax on same machine hangs

[Steve Underwood]

Roger Schreiter wrote:

> Hi,
>
> I noticed a strange behaviour:
> Faxing using spandsp (TxFax) from my asterisk box to my
> old, common fax machine at home works fine.
> Faxing from the same box to my office pc-fax (Hylafax)
> also worke fine.
>
> Receveiving faxes on my asterisk box using spandsp (RxFax)
> also works fine. It is a PSTN number connected to the digium
> card of that asterisk box.
>
> Then I faxed from my asterisk box (TxFax) to that PSTN number,
> my asterisk box answers the call, TxFax and RxFax, both start,
> but no tif file is created in the directory, where normally the
> fax files are created. Using show channel I can still see
> both apps, TxFax and RxFax, even after half an hour. Then
> I stopped using soft hangup, and tried again several times:
> Same result.
>
> So, do I have to avoid to fax to myself in any case, because
> I risk to produce those never terminating jobs, which probably
> consume some resources?
>
>
> How can I enable asterisk to fax to itsself?
> Well, it won't be the normal operation, but when allowing clients
> to fax, it can happen by chance, that someone faxes to another
> user on the same machine without knowing it.
>
> Thanks for any hints!

If the call really dialed out through a PSTN port and back in it should 
work. It is was a pure internal connection between 2 processes it will 
not. The timing for these programs comes from the received data. No 
data, no work.

Regards,
Steve