[asterisk-users] Spurious hangups on zaptel interface

[Eric "ManxPower" Wieling]

Both can cause random hangups.  This is a well known issue.  It even 
says in the sample configs that these features are prone to false positives.

Alyed Tzompa wrote:
> 		I'm curious... why will this work??
> 
> busydetect will just cut the line if there are 4 tones (les or more
> depending the busycount param), and call progress will in fact try not
> to cut the call due to false hangups.
> 
> Alyed 
> 
> ----------------------------------------
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> 
> Barry D. Hassler wrote:
>> We seem to be getting unexpected hangups on our * system, very
>> consistent when calling particular numbers that we can associate with a
>> clients phone system. These hangups generally occur when our call is
>> transferred within their system (to voicemail usually). 
>>
>> I'm suspecting their may be some sort of "flash" (for lack of a better
>> term) on the called side, but I can't verify this. 
>>
>> the situation does appear to be consistent and reproducible, but only
>> with specific phone systems that our calls go through.
>>
>> Has anyone else experienced this, or have any potential resolutions?
>> I've researched this quite a bit, but not turning up anything
>> particularly relevant.
>>
>> I am using asterisk 1.2.9.1
> 
> Remove busydetect=yes and callprogress=yes from your 
> /etc/asterisk/zapata.conf