asterisk users - Nov 2004 - Which is the best signalling for FXS

Hi All,
Which is the best signalling to use when connecting an FXS inteface on a
TDM400 to a standard telephone. I see that all examples use fxo_ks, but it
is my understanding that kewl start is really designed for connections to
the CO so that hangup etc. can be detected. So does it make any sense to
configure a telephone for fxo_ks? Or should it be configured for fxo_ls?

Regards
Garry Taylor

On Sat, 2004-11-27 at 13:18 +0800, Garry Taylor wrote:
> Hi All,
> Which is the best signalling to use when connecting an FXS inteface on a
> TDM400 to a standard telephone. I see that all examples use fxo_ks, but it
> is my understanding that kewl start is really designed for connections to
> the CO so that hangup etc. can be detected. So does it make any sense to
> configure a telephone for fxo_ks? Or should it be configured for fxo_ls?
Kewlstart is for disconnect supervision. If you have a simple phone
connected, it doesn't make much difference what your signalling is as
the human will actually hangup the phone. If you hookup another device
that might actually need the supervision like a
modem/faxmachine/whatever, you will still want disconnect supervision.
As far as technical best, out side of the disconnect supervision, the
kewlstart and loopstart are equivalent.
-- 
Steven Critchfield <critch@basesys.com>