[Asterisk-Users] TMD400 FXO <-> Nokia 32 GSM (Hangup Problems)

[Leandro Morgado]

Matt Riddell wrote:

>
> You can set it to detect hangups via tones in zapata.conf with the 
> busydetect=yes and busycount=10 entries.
>
 From what I was able to figure out from my the logs, asterisk will not 
do busytone hangup detection when using Kewlstart.  I guess Kewlstart 
expects a battery drop to indicate hangup so I tried Groundstart (which 
failed to load) and Loopstart. Now when I use Loopstart asterisk doesn't 
seem to  detect the hangup using the battery drop but it does eventually 
detect it. My guess is that it only uses busydetect with Loopstart 
signalling. With fxs_ls and the busydetect=yes , busycount=10 voltages 
values after the gsm signals hangup are correctly indicated as being 48V.

It's not as clean as a battery drop (Disconnection Supervision) but hey, 
at least it works! :)

Although, I still think that there is some kind of incompatibility or 
battery drop timing problem between Asterisk and the Nokia 32. I wish I 
knew more about telecomms and wcfxs.c to fix it!

>
> The changes in zaptel.conf will just change what tones (i.e. Hz) and 
> what cadences (i.e. ms) are used to detect hangup via tones.  The 
> opermode switches should change the line impedance etc of the module.
>
By changing the opermode to FRANCE I was trying to affect the electrical 
characteristics of the FXO module, hoping that the correct 48v would 
show up in the log files when asterisk hangs up. Seeing that it is now 
in "busytone hangup detection" mode, the values in zaptel.conf should 
have a influence on how it does the detection.

> The recordings I am after are of the hangup tones that the Nokia is 
> producing.


Hum.. any idea how I can record these busy tones? Or is this just a 
waste of time, seeing that asterisk correctly hangs up based on busy tones?

>
> However, seeing as you say it can make multiple tones, it may be 
> easiest to set the Nokia to create USA tones, and then in zaptel.conf 
> put loadzone=us, defaultzone=us and in zapata.conf busydetect=yes and 
> busycount=10.
>
Hum.. USA is not on the list of supported countries. Most european 
countries are, so I just randomly choose France (after hearing about 
nightmares with CLI in UK mode!) seeing that zaptel.conf supports 
defaultzone=fr .

Although this is really a work-around to the problem (the real problem 
is still out there) I thank you very much for being so helpful!

Thanks,

Leandro Morgado