[Asterisk-Users] Question :: groundstart and loopstart :: Update

[Surfer Dude]

TC,

Thank you very much for the pointer.  I wanted to acknowledge how 
valuable it was.  I was able to monitor the channel.  I did not know 
that tool exsited or what it did.  Now I do.

I actually do not know what an FSK tone is.  I gather, from google, 
that it is some audible tone between the first and send ring.  I was 
not able to to hear anything between the rings.  However, my caller ID 
stopped working in loopstart mode as well.  So... I have to dig deeper.

Thanks again,

Jason


On Friday, June 20, 2003, at 10:47  AM, TC wrote:

> Callerid issue
> 1) if you run ztmonitor on the fxo line & call in do you hear the fsk 
> tone
>  if yes then we beleive the CAC is passing fsk
>     2) in chan_zap->ss_thread around line 4154 (current cvs)
>         if you get to the callerid_feed at least once then
>           if you get to chan_zap->ss_thread->callerid_get  around line 
> 4163 (current cvs)
>             does this parse fail
>           else
>             do you get check sumfails or sum fin else
>         else
>           zaptel is not detecting the ring/fsk correct
>           might need to tunimng on ZT_RINGTRAILER
>  else
>     CAC is hooped
>
> -----Original Message-----
> From: Surfer Dude <swell at labranch.com>
> To: asterisk-users at lists.digium.com <asterisk-users at lists.digium.com>
> Date: June 20, 2003 10:24 AM
> Subject: Re: [Asterisk-Users] Question :: groundstart and loopstart :: 
> Update
>
> Thanks for the responses.
>  
> Here is an update on my zap groundstart, loopstart, "disconnect 
> supervision" woes.  Apparently, the groundstart mode in the CAC FXO 
> module works on loopstart lines.  I still don't understand how and > why.
>  
> I have loopstart lines.
>  
> The only way "disconnect supervision" works on my system is if I set 
> the FXO module to groundstart.  However!  There is a big caveat.  In 
> groundstart mode, incoming caller ID stops working!  This is something 
> I am going to have to live with for now as disconnecting the line on 
> hang-up is far more important than caller ID.
>  
> I have no idea if the caller ID problem is a problem with CAC FXO 
> modules or the zap channel software or the fact that we are using 
> groundstart signaling on a loopstart line.
>  
> I can confirm that this is the behavior with both CAC I and CAC II 
> units as I have a CAC II unit and I spoke with Michael on this list 
> who has a CAC I unit.  Both of us are in the same predicament.
>  
> Anyway, I hope others find this info useful.  If anyone has any other 
> ideas on how I can get my caller ID to work I would be really excited 
> about that.
>  
>  
> Thanks,
> Jason
>  
> PS: I have seen people mention that, when you have many lines, PRI is 
> cheaper.  This is not our case at all.  San Francisco.  We have eight 
> lines at the cost of $0.01 per line.  All we pay for really is the 
> call time.
>  
>
> ----- Original Message -----
> From: Surfer Dude
> To: asterisk-users at lists.digium.com
> Sent: Tuesday, June 17, 2003 4:05 PM
> Subject: [Asterisk-Users] Question :: groundstart and loopstart
>
> Hello Astrites,
>  
> I was just about to send out a long email about not being able to 
> detect hang-up with my CAC II FXO module on my PSTN POTS lines.  I had 
> tried many configurations.  I had attached a toner to the line to see 
> if I was getting this "disconnect supervision" signal after hang-up.  
> (toner has a line powered light in the off position)  It seemed that I 
> was getting the signal, as:
>  
>     The light was steady on onhook
>     When the line rang the light dimmed.
>     When I picked up the line stayed dim (If I remember correctly)
>     When the other end hung up the light stayed on
>     Then turned off momentarily a few seconds later.  (I suspected 
> this was "disconnect supervision")
>  
> Anyway asterisk never detected hang-up.  Everything else worked.  I 
> was frustrated as hell.
>  
> After a few days of trying everything, I tried to set my CAC II FXO 
> module to Groundstart and configured zaptel.conf and zapata.conf to 
> groundstart signaling.
>  
> Voila!  Everything work!
>  
> The question is how does groundstart and loopstart work?  How was I 
> able to have a somewhat working system using loopstart when it seems 
> that the phone company signaling was groundstart?  Can I assume that 
> my lines are indeed groundstart?
>  
> I am really happy that it works.  I can now begin the process of 
> deployment with a much greater feeling of security.
>  
> Jason
>  
>  
>
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