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

[Roberts Klotins]

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.

But looking at the page again I discovered a pointer to this very
interesting document: Voice Network Signalling and Control
http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800a6210.shtml

So cheers,

Robert


On Mon, 2008-09-15 at 07:44 -0500, Don Kelly wrote:
> I don't know what options BT may provide, but check out "calling party
> control" on the Asterisk wiki and see if there's something you can do in
> your configuration to make it all better:
> 
> http://www.voip-info.org/wiki/index.php?page=Asterisk+Disconnect+Supervision
> 
>   --Don
> 
> Don Kelly
> PCF Corp
> Real Support for your Virtual Office TM
> 651 842-1000
> 888 Don Kell(y)
> 651 842-1001 fax
> 
>  
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of
> roberts at latnet.lv
> Sent: Monday, September 15, 2008 6:06 AM
> To: asterisk-users at lists.digium.com
> Subject: [asterisk-users] UK call initiating party hangup control on
> analoghome lines
> 
> I suppose this is rather an informative e-mail than a question. However if
> people had similar experiences or could comment what the differences are in
> other countries or with business analog lines, it would be interesting. It
> took
> me a week until a BT engineer was sent to my home home, since BT tech
> support
> was unable to provide information about the problem.
> 
> Problem: Calling party controls how long the line will stay open once it is
> connected.
> 
> Example: When asterisk box receives a call, it answers, perhaps takes a
> voice
> message and issues hangup(). If the calling party does not hang up - the
> line
> remains connected - i.e. the caller effectively controls the line. Of course
> the caller pays for it to BT, therefore it is not a problem for BT.
> 
> On asterisk irc channel I received a reply along the lines "the caller
> controls
> the line, it has always been like that in telephony" and also a reply that
> in
> Germany it is different. My experience in Latvia is also different - if any
> party hangs up, the other party hears busy signal and line is disconnected.
> Kind of makes more sense if you are used to it.
> 
> I am posting to provide information for people who might be using landlines
> in
> UK and become similarly confused. There is very little information about
> this,
> I couldn't find it on the web, people on asterisk irc also were at a loss,
> BT
> phone support themselves thought this was a fault. It took an engineer to be
> able to explain that this was a UK PSTN feature by design.
> 
> This is not asterisk problem - for example asterisk in my case detects
> remote
> hangups alright (which usually has been the problem with UK lines and about
> which there is quite a bit of info on www), and it can hangup properly if it
> has initiated a call.
> 
> So a person calling from say Vodafone mobile would have to be careful to
> actually make sure he/she presses the red button after speaking to my
> answering
> machine on Asterisk. Or any answering machine for that matter, since the
> problem
> of course is reproducible with any phone.
> 
> Best wishes,
> 
> Roberts
> 
> 
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> 
> AstriCon 2008 - September 22 - 25 Phoenix, Arizona
> Register Now: http://www.astricon.net
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
> 
> 
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> 
> AstriCon 2008 - September 22 - 25 Phoenix, Arizona
> Register Now: http://www.astricon.net
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users