[asterisk-users] Problem with TDM808

[D Tucny]

If your provider provides any signalling to indicate answer, such as a
polarity reversal, this could be detected easily...

; Use a polarity reversal to mark when a outgoing call is answered by the
; remote party.
;
;answeronpolarityswitch=yes

This isn't very common though... alternatively, there is the 'HIGHLY
EXPERIMENTAL' call progress detection...

; On trunk interfaces (FXS) it can be useful to attempt to follow the
progress
; of a call through RINGING, BUSY, and ANSWERING.   If turned on, call
; progress attempts to determine answer, busy, and ringing on phone lines.
; This feature is HIGHLY EXPERIMENTAL and can easily detect false answers,
; so don't count on it being very accurate.
;
; Few zones are supported at the time of this writing, but may be selected
; with "progzone".
;
; progzone also affects the pattern used for buzydetect (unless
; busypattern is set explicitly). The possible values are:
;   us (default)
;   ca (alias for 'us')
;   cr (Costa Rica)
;   br (Brazil, alias for 'cr')
;   uk
;
; This feature can also easily detect false hangups. The symptoms of this is
; being disconnected in the middle of a call for no reason.
;
;callprogress=yes
;progzone=uk

Obviously far from ideal, and at least, where I am, unworkable due to the
way that all the telcos have got into providing musical ringing...

The only real solution is to go digital...

d


2009/1/21 Pascal Bruno <tipascal at gmail.com>

> Is there any way of going around this???  Any tricks, configuration hacks??
>
>
>
>
>
> On Tue, Jan 20, 2009 at 4:39 PM, Jared Smith <jsmith at digium.com> wrote:
>
>> On Tue, 2009-01-20 at 15:30 -0500, Pascal Bruno wrote:
>> > I have just installed a Digium TDM808 (8 fxo port) on an Asterisk
>> > 1.6.3.  When I try making a call with a .call file, the call goes
>> > straight to the dialplan and start executing the dialplan even before
>> > the called party has pick up.  Anybody knows why by any chance?
>>
>> That's not a problem with the TDM800 card... it's just a side-effect of
>> analog signaling.  For analog calls, the central office doesn't give any
>> type of signal when the far end has answered the call, so Asterisk has
>> no way of knowing when that happens. For that reason, Asterisk
>> immediately treats any outgoing analog call as having been answered.
>>
>> --
>> Jared Smith
>> Digium, Inc. | Training Manager
>>
>>
>>
>>
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>
>
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