[Asterisk-Users] TDM400P FXO channel remains Offhook after outoing or incoming call / line is parallel with other telephone equipment

[rodrigo Benavides]

Andrei :
In zapata.conf    you must activate the following lines

busydetect=yes

busycount=4


regards


Rodrigo




----- Original Message ----- 
From: "Andrei (MPI)" <asterisk at markovprocesses.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: Saturday, December 04, 2004 4:57 AM
Subject: [Asterisk-Users] TDM400P FXO channel remains Offhook after outoing
or incoming call / line is parallel with other telephone equipment


> Hi,
>
> I am preparing to roll out Asterisk setup with TDM400P, 4 FXO modules in
> a small office. Asterisk will replace legacy system (4 telco lines, 8
> extensions PBX), but before the new system and ip phones would be
> installed, the legacy system is still in use. The four telco lines are
> now connected in parallel both to legacy PBX and the 4 FXO modules in
> TDM400P. Asterisk is configured not to pick up any incoming calls.
>
> zapata.conf:
>
> signalling=fxs_ks
> musiconhold=default
> languages=en
> context=inbound-analog
> group = 1
> channel => 1-4
>
> zaptel.conf:
>
> loadzone = us
> defaultzone=us
>
> fxsks=1-4
>
> I am dialing out via Asterisk and it works fine untill the following
> situation:
>
> - one of the telco lines occasionally becomes mute after call is
> completed, would not provide dial tone, (not sure about ringing on that
> line) - both via old and new PBX.
> - zap show channel <n> would show that line as 'Offhook', though no
> telephone is off hook.
>
> If physical line would be unplugged from TDM card, the line would become
> normal again.
>
> Sorry, if it is a well known problem, but I did not find any specific
> information yet.. Please answer two questions:
>
>  - is it really bad to have parallel connection on TDM400P FXO lines to
> an additional telephone equipment, does it prevent TDM400P to detect
> Offhook/Onhook correctly?
>  - will the problems go away when parallel lines would be disconnected
> (legacy PBX shut down)?
>
> As you may understand the office personnel has anxiety that this may be
> a bad Asterisk setup / bad TDM card etc (which I am sure so far that it
> is not).
>
> Please help.
>
> Sincerely,
> Andrei
>
>
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