[Asterisk-Users] Re: FXO module in TDM400P (UK, BT) - Hangup detection failing

[George Gardiner]

On Wed, 3 Nov 2004 13:10:57 +0000, stan at saticed.me.uk wrote:
> On Tue, Nov 02, 2004 at 10:58:39PM +0000, StrUK wrote:
> <snip other information>
>> I guess my question is: does anyone have polarity reversal hangup
>> detection working on a BT line with an fxo module in a TDM400P?
>>
>
> Testing with my fxo module shows that it takes about 8 seconds from
> pressing hangup on the mobile phone before hangup is detected in
> asterisk (maybe this relates to your 9 seconds).  I'm not sure if
> this is when the local exchange sends the polarity reversal or if
> asterisk is detecting a hangup in some other way.  I have
> busydetect=no and callprogress=no so I'm (AFAIK) not using any
> "fake disconnect functions" as per the keypad lights page[1].
>
> If I pick up the phone during the 8 seconds I get a usable
> dialtone, which might be worrying if I didn't want people calling
> certain numbers. This seems to indicate that the local exchange
> knows that the mobile has hungup, as it wouldn't give dialtone in
> the middle of call.  So perhaps I dont have polarity reversal
> hangup detection working, but HTH anyway.
>
> I'm not using the fxo callerid and asterisk is from cvs checkout
> date 14-Aug-2004 (as downloaded from bri-stuff.0.1.0-RC4a)
>
> my zapata config for the fxo module:


<snip>


I have UK callerid enabled and I have the same problem, just haven't got around to asking anyone about it yet!   A slight variant on the usual setup is that I've got Home Highway from which I'm taking the two analog channels.