[Freeswitch-users] openzap and progress detection

Wed May 20 08:01:55 PDT 2009

Ok, feature request for progress detection opened as OPENZAP-70.

Meanwhile, I humbly offer a basic working environment in Spain (a TDM400
with 1xFXO) if you need it for testing.

François.

On Wed, 2009-05-20 at 08:08 -0500, Anthony Minessale wrote:

> The most difficult one would be the cadence detection.
> The rest are just based on events from the driver.  We have never
> tried it in Spain so we unfortunately have not had 
> a working environment to test it in.  I am sure we could strive to
> support your requests but it will take time and resources
> so maybe you can open a feature request on jira
> http://jira.freeswitch.org and we can try to keep track of your
> endeavor.
> 
> 
> 
> 
> On Wed, May 20, 2009 at 5:26 AM, François Delawarde
> <fdelawarde at wirelessmundi.com> wrote:
> 
>         I briefly looked at the code, so I will then answer my own
>         questions from what i understood (and I didn't understand
>         much). Please correct me if I'm wrong (see inline answers).
>         
>         A new question would then be: Are any of those features
>         planned for the future of OpenZAP?
>         
>         
>         On Mon, 2009-05-18 at 10:29 +0200, Francois Delawarde wrote:
>         
>         > Hello,
>         > 
>         > I'm in Spain with an analog TDM400 Clone from OpenVox (with
>         > 1xFXO+1xFXS), and am trying first to make the FXO work with
>         > Openzap and Freeswitch (using dahdi 2.2.0-rc4). Openzap
>         > perfectly detects and loads the spans, but I'm currently
>         > enable to dial out with the FXO module, it doesn't dial
>         > anything and times-out after 30 seconds.  I believe it has
>         > to do with some tone detection and  therefore have a few
>         > questions:
>         > 
>         > - When I plug in the line, dahdi sends an event (event 17)
>         > that is ignored by OZ. Can we enable some type of battery
>         > check in OZ before dialing out, or is there some variable to
>         > monitor battery (oz dump doesn't show the battery status)?
>         
>         No.
>         
>         
>         > - Does OZ use the polarity switch events sent by dahdi (in
>         > kewlstart mode) for answer and hangup detection?
>         
>         Yes.
>         
>         
>         > - Apparently, OZ does tone progress detection by frequency,
>         > but here in Spain, most tones use the same 425Hz frequency
>         > with different on-off timing. Is it possible to detect
>         > those?
>         
>         No.
>         
>         
>         > - As some PBX in Spain transfer calls by first hanging up
>         > and picking up on another phone, can we enable/disable parts
>         > of polarity switch and/or tone progress detection (ex:
>         > (hangup)/(answer)onpolarityswitch in Asterisk)
>         
>         No.
>         
>         
>         > - Some lines here are connected to very old FXS from
>         > operators that have low sound quality and can take a few
>         > seconds to give a dial tone when picking up. Is it possible
>         > to introduce a delay before sending DTMF digits when
>         > dialing? Is it possible to "relax" DTMF detection, and tweak
>         > DTMF settings (make them a bit longer, with a longer pause
>         > for the other side to detect)?
>         
>         No / No idea / No idea
>         
>         
>         > My "ideal" case to make it work in every case around here
>         > would be to:
>         > - have OZ fail to dial if battery is not present (and be
>         > able to fetch battery status somehow)
>         > - disable tone progress (sometimes call ends up on some
>         > local PBX that answers and provides US tones which are
>         > different)
>         > - be able to have an initial pause before dialing with DTMF
>         > digits
>         > - use polarity switch to detect remote answer, but not
>         > hangup (for transfer issues)
>         > 
>         > Is the above possible?
>         
>         No.
>         
>         
>         > Thanks in advance,
>         > François.
>         
>         You're welcome!
>         
>         François.
>         
>         
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> 
> 
> 
> 
> -- 
> Anthony Minessale II
> 
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