[asterisk-users] kewlstart disconnect threshold

Stephen Bosch posting at vodacomm.ca
Fri Feb 2 12:36:50 MST 2007


Hi:

Tzafrir Cohen wrote:
> On Wed, Jan 31, 2007 at 07:57:54PM -0700, Stephen Bosch wrote:
>> Hi, folks:
>>
>> Can the loop drop detection threshold (normally defined in milliseconds)
>> be set on the Digium TDM-400 cards? Most PBXs let you set this value.
> 
> What exactly do you need it for?
> 
> On the FXO module (detecting) or on the FXS module (generating)?

On the FXO module.

The loop drop comes from the switch, after a remote party hangup. This
is part of Calling Party Control (CPC).

Leo Ann Boon wrote:
> Stephen Bosch wrote:
>> Hi, folks:
>>
>> Can the loop drop detection threshold (normally defined in milliseconds)
>> be set on the Digium TDM-400 cards? Most PBXs let you set this value.
>>   
> Good question. Anyone knows if the TDM-400 actually detect loop drops?

Well, that's really what kewlstart (and loopstart) means. If it
couldn't, then Asterisk wouldn't know that the call had been hung up,
and hog the channel.

The question is whether the detection threshold (how long the loop has
to drop before the Zap driver detects the hangup condition) can be
adjusted somewhere.

Perhaps it's in the driver source?

-Stephen-


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