[Asterisk-Users] No ring on extensions

[asterisk at billheckel.com]

I have a couple of the CAC I channel banks in production.  They do work quite well with * but I have 
heard that the ring generators are a bit fragile.

The channel bank has electronics to generate a 'ring voltage' of around 90v that the analog phone 
will interpret as 'ring' and make some kind of noise (bell chirp etc).  If the channel bank's ring 
voltage generator is dead it won't be able to ring the phones.

Bill

Surfer Dude wrote:
> At 08:26 AM 4/28/2003 -0600, you wrote:
> 
>> On Sun, 2003-04-27 at 22:44, Surfer Dude wrote:
>> > Is it possible that the CAC I is defective?  I bought it on ebay and it
>> > seems to only support span=1,0,0,d4,ami and not span=1,0,0,esf,b8zs.
>> > It passes self test and lights are normal.
>> >
>> It's entirely possible... when you say your CAC doesn't support
>> esf/b8sz, did you try changing the dip switches to set your CAC to use
>> esf/b8sz?
> 
> 
> Yes, I tried the dip switches.  I have T1 Framing, Line Code, and CSU 
> on/off switched to the up position.  Framing only happens in the up 
> position and it only happens when I select d4 in digium.
> 
>> > Is it possible the emp connector and cable is causing the problem?  It
>> > is an old HP scanner cable with a choke near the connector.
>> >
>> This is most likely the problem... I wouldn't trust a scanner cable to
>> be wired correctly...
> 
> 
> 
> That was all I had at home.  The production system will use regular 
> telco equipment.  If the problem is the CAC I bank then that will be ok 
> because the production system, at work, will use 3 x CAC II banks that I 
> also baught on ebay ($1000).  Before I brought the T1 card home to setup 
> and test the system I had the CAC II banks speaking esf/b8sz.  I didn't 
> have the extensions file set up however to see if I could ring phones.
> 
> All this verbage is new to me.  I do not have a telco background...
> 
> Can someone tell me where ring is generated?  Is it the electronics in 
> the channel bank or is it a signal sent from the software?
> 
> 
> Thanks,
> Jason
> 
> 
> 
> 
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
> 
>