[asterisk-users] UK call initiating party hangup control on analoghome lines

[Gordon Henderson]

On Tue, 16 Sep 2008, Roberts Klotins wrote:

> Hi Gordon,
>
> The test would be call your home BT line, hang up the home end and THEN
> wait for how long time the line will stay open listening to the handset
> that initiated the call.

That's exactly what I did.

> If it is the caller (call initiator) who hangs up, line is released very
> quickly.

Indeed.

> But perhaps thats what you are doing, since you say that the line is
> cleared inside 10 minutes (I have never waited that long). If I call
> from T-mobile - line is cleared in 30 sec, if I call from Vodafone - it
> stays open over 2 minutes; then I hang up Vodafone. If the call is made
> from a landline - I also have waited over 2 minutes but not 10.

I called from O2, but I'll try a call via VoIP next. ... And 5 seconds 
after I hungup my BT line, then VoIP call ended. Tried it twice now - same 
results. The calling phone is ended inside about 5 seconds of the analogue 
line hanging up. (It's on a TDM400)

And just in-case it was some weird interaction between the outgoing 
(voip) call and incoming analogur cal lon the same asterisk box, I've just 
tried it with a totally indepedant VoIP outgoing path - same results. I 
place an outgoing call via VoIP to my home BT line - answer it (via 
a phone connected to my asterisk PBX connected to the analogue line via a 
TDM400), hang that call up, then 5 seconds later the VoIP call is 
terrinated.

I do remember that I used to use this to 'transfer' calls from one phone 
to another - someone would phone me at my last house, I'd just hang up, 
then find another phone and pick it up, but I also remember someone doing 
this to me just a few weeks ago - they hung up and my call cleared and I 
had to re-dial.

> I am not sure what the difference is when you order the line and tell
> about PABX, however it seems to me that if I now asked to set up my
> existing line for PABX, they might say that this is not a business line,
> therefore they can't help, mightn't they?

BT - as helpful and money grabbing as ever, alas.

Gordon

>
> Robert
>
> On Tue, 2008-09-16 at 21:07 +0100, Gordon Henderson wrote:
>> On Tue, 16 Sep 2008, Roberts Klotins wrote:
>>
>>> Thanks Don,
>>>
>>> I have looked at that page and the described problem (when asterisk does
>>> not detect remote (calling) party hangup) is exactly the opposite to my
>>> case. In my case I learnt that for BT residential analog lines the
>>> remote caller is entitled to hold the line open indefinitely, regardless
>>> whether I hang up or not. So this seems to be a feature of BT rather
>>> than a problem with asterisk.
>>>
>>> I do not know whether there are many countries where telco setup is
>>> similar.
>>
>> That might be worth a posting to usenet:uk.telecom ... I've a funny
>> feeling this is exchange dependant and it's not the same action for all
>> exchanges. I can call my home BT line, answer it, then hangup and the call
>> is cleared inside 10 minutes (usually 2-3) then I can make an outgoing
>> call.
>>
>> I'm told that you need to tell BT that you have a PBX on the end of the
>> line, but I've never done that for any analogue installation I've done.
>>
>> Gordon
>>
>>
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