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tony at softins.clara....
Guest

Posted: Fri Apr 04, 2008 5:35 am Post subject: [asterisk-users] Ring back when free?

Has anyone here implemented "Ring back when free" in Asterisk? The way it works in the UK is as follows: 1. A calls B. B is engaged (busy). 2. A hears "The number you called is busy. To use ringback, press 5" 3. A presses 5, and hears "Your ringback request has been accepted". 4. A hangs up. 5. Later, B hangs up. The system then calls A (if A is now busy, it waits until A is clear again). 6. If/when A answers, the system calls B on A's behalf and A hears ringing. Any implementation has to cater for the fact that when B is busy, he could be either the calling or the called party on his current call. If he is the calling party, he will execute 'h' when he clears, but if he is the called party, he won't be in the dialplan to execute 'h', so we need some other way to invoke the ringback (step 5). Thoughts? Cheers Tony -- Tony Mountifield Work: tony at softins.co.uk - http://www.softins.co.uk Play: tony at mountifield.org - http://tony.mountifield.org

faraz.khan at emergen.biz
Guest

Posted: Fri Apr 04, 2008 5:57 am Post subject: [asterisk-users] Ring back when free?

Thinking out loud: write a asterisk call file (when the calling user
presses 5) which keeps on trying to connect the two.
On Fri, 2008-04-04 at 10:35 +0000, Tony Mountifield wrote:

Quote:

Has anyone here implemented "Ring back when free" in Asterisk?

The way it works in the UK is as follows:

1. A calls B. B is engaged (busy).
2. A hears "The number you called is busy. To use ringback, press 5"
3. A presses 5, and hears "Your ringback request has been accepted".
4. A hangs up.
5. Later, B hangs up. The system then calls A (if A is now busy, it
waits until A is clear again).
6. If/when A answers, the system calls B on A's behalf and A hears ringing.

Any implementation has to cater for the fact that when B is busy, he
could be either the calling or the called party on his current call.
If he is the calling party, he will execute 'h' when he clears, but
if he is the called party, he won't be in the dialplan to execute 'h',
so we need some other way to invoke the ringback (step 5).

Thoughts?

Cheers
Tony

--
Faraz R Khan
Chief Architect
Emergen Consulting Pvt Ltd
+92.21.111.111.320 x200
www.emergen.biz

michiel at vanbaak.info
Guest

Posted: Fri Apr 04, 2008 6:07 am Post subject: [asterisk-users] Ring back when free?

On 10:35, Fri 04 Apr 08, Tony Mountifield wrote:

Quote:

Have a look at this:
http://bugs.digium.com/view.php?id=10689

--

Michiel van Baak
michiel at vanbaak.eu
http://michiel.vanbaak.eu
GnuPG key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x71C946BD

"Why is it drug addicts and computer aficionados are both called users?"

Dean at cognation.net
Guest

Posted: Fri Apr 04, 2008 6:30 am Post subject: [asterisk-users] Ring back when free?

Hey Tony, in the pbx space that feature is called "camp on"

I have no idea why - just thought I'd let you know.

Regards,

Dean Collins
Cognation Pty Ltd
dean at cognation.net
+1-212-203-4357
+61-2-9016-5642 (Sydney in-dial).

Quote:

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
bounces at lists.digium.com] On Behalf Of Tony Mountifield
Sent: Friday, 4 April 2008 6:35 AM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Ring back when free?

Has anyone here implemented "Ring back when free" in Asterisk?

The way it works in the UK is as follows:

1. A calls B. B is engaged (busy).
2. A hears "The number you called is busy. To use ringback, press 5"
3. A presses 5, and hears "Your ringback request has been accepted".
4. A hangs up.
5. Later, B hangs up. The system then calls A (if A is now busy, it
waits until A is clear again).
6. If/when A answers, the system calls B on A's behalf and A hears

ringing.

Quote:

Any implementation has to cater for the fact that when B is busy, he
could be either the calling or the called party on his current call.
If he is the calling party, he will execute 'h' when he clears, but
if he is the called party, he won't be in the dialplan to execute 'h',
so we need some other way to invoke the ringback (step 5).

Thoughts?

Cheers
Tony
--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

_______________________________________________
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eric at fnords.org
Guest

Posted: Fri Apr 04, 2008 8:01 am Post subject: [asterisk-users] Ring back when free?

"core show application retrydial"

You need to do a "core show applications" and look at what apps are
included with Asterisk.

Tony Mountifield wrote:

Quote:

--
Consulting for Asterisk, Polycom, Sangoma, Digium, Cisco, LAN, WAN, QoS,
T-1, PRI, Frame Relay, Linux, and network design. Based near
Birmingham, AL. Now accepting clients worldwide.

tony at softins.clara....
Guest

Posted: Fri Apr 04, 2008 8:03 am Post subject: [asterisk-users] Ring back when free?

In article <1207306647.18787.24.camel at faraz-desktop>,
Faraz R. Khan <faraz.khan at emergen.biz> wrote:

Quote:

Thinking out loud: write a asterisk call file (when the calling user
presses 5) which keeps on trying to connect the two.

I thought about that, but the trouble is, it's not event-driven. It just
keeps on trying until it runs out of retries.

Cheers
Tony

Quote:

On Fri, 2008-04-04 at 10:35 +0000, Tony Mountifield wrote:

Quote:

--
Faraz R Khan
Chief Architect
Emergen Consulting Pvt Ltd
+92.21.111.111.320 x200
www.emergen.biz

_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users

--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

tony at softins.clara....
Guest

Posted: Fri Apr 04, 2008 8:04 am Post subject: [asterisk-users] Ring back when free?

In article <20080404110737.GB20322 at vanbaak.info>,
Michiel van Baak <michiel at vanbaak.info> wrote:

Quote:

On 10:35, Fri 04 Apr 08, Tony Mountifield wrote:

Quote:

Have a look at this:
http://bugs.digium.com/view.php?id=10689

Thanks - looks interesting. However, I will need to implement this on
version 1.4 for now.

Cheers
Tony
--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

tony at softins.clara....
Guest

Posted: Fri Apr 04, 2008 8:08 am Post subject: [asterisk-users] Ring back when free?

In article <3685A8FD247FA94C957C4304AB386A04073E6C at cognationsvr1.Cognation.local>,
Dean Collins <Dean at cognation.net> wrote:

Quote:

Hey Tony, in the pbx space that feature is called "camp on"

I have no idea why - just thought I'd let you know.

Thanks Dean - I've heard the term "camp on", but it's seldom used in the UK,
and I thought it meant something more like Call Waiting than Ringback When Free.

Cheers
Tony
--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

tony at softins.clara....
Guest

Posted: Fri Apr 04, 2008 8:13 am Post subject: [asterisk-users] Ring back when free?

In article <47F626BF.7090706 at fnords.org>, Eric Wieling <eric at fnords.org> wrote:

Quote:

"core show application retrydial"

But that doesn't allow the caller to hang up and get called back. It just
retries while he waits on the line.

Quote:

You need to do a "core show applications" and look at what apps are
included with Asterisk.

I do, frequently!

Cheers
Tony

Quote:

Tony Mountifield wrote:

Quote:

--
Consulting for Asterisk, Polycom, Sangoma, Digium, Cisco, LAN, WAN, QoS,
T-1, PRI, Frame Relay, Linux, and network design. Based near
Birmingham, AL. Now accepting clients worldwide.

_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users

--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

faraz.khan at emergen.biz
Guest

Posted: Fri Apr 04, 2008 8:38 am Post subject: [asterisk-users] Ring back when free?

Trouble with making it event driven (through the 'h' extension) is as
follows:
Imagine the user simply has his phone OFF hook (analog phone or an ip
phone like the grandstream which would report BUSY if cradle is
lifted).

Placing this cradle back generates NO sip events, the phone simply
becomes 'free'. Other than this scenario using the 'h' extension to read
off a DB (which gets populated on pressing 5) should work just fine.

On Fri, 2008-04-04 at 13:03 +0000, Tony Mountifield wrote:

Quote:

In article <1207306647.18787.24.camel at faraz-desktop>,
Faraz R. Khan <faraz.khan at emergen.biz> wrote:

Quote:

Thinking out loud: write a asterisk call file (when the calling user
presses 5) which keeps on trying to connect the two.

I thought about that, but the trouble is, it's not event-driven. It just
keeps on trying until it runs out of retries.

Cheers
Tony

Quote:

On Fri, 2008-04-04 at 10:35 +0000, Tony Mountifield wrote:

Quote:

--
Faraz R Khan
Chief Architect
Emergen Consulting Pvt Ltd
+92.21.111.111.320 x200
www.emergen.biz

kwem at gmx.de
Guest

Posted: Sat Apr 05, 2008 12:14 pm Post subject: [asterisk-users] Ring back when free?

Hi,

Am Freitag, den 04.04.2008, 13:03 +0000 schrieb Tony Mountifield:

Quote:

In article <1207306647.18787.24.camel at faraz-desktop>,
Faraz R. Khan <faraz.khan at emergen.biz> wrote:

Quote:

Thinking out loud: write a asterisk call file (when the calling user
presses 5) which keeps on trying to connect the two.

I thought about that, but the trouble is, it's not event-driven. It just
keeps on trying until it runs out of retries.

We realized someting like that with a call file.
If a caller presses 5 store this as an open callback in a database.
Place a script in the h-extension and call it with the
DeadAGI-Application. This script looks up any pending callbacks for both
parties of the closed connection and generates the call files.

Regards,
Karsten

YEHAVI at VMS.HUJI.AC.IL
Guest

Posted: Sun Apr 06, 2008 2:02 am Post subject: [asterisk-users] Ring back when free?

Quote:

Has anyone here implemented "Ring back when free" in Asterisk?

Here is what I do; the dialplan enclosed is in AEL2 format, but you can get the
idea.

When a call is originated I save the called and callee numbers in a database.
If the user gets busy he/she hangs up and dial *41. I then retreive the last
number they dialled and place a flag in the database that someone is camping on
it. The H extension checks this flag and if found generates a .call file.

First, I have a macro to save the for each extension who is the last they
called and the last who called them:

// Save the calling and called numbers in To and From and in the database so
// they can be used by *41 and *42. This way the h extension can acecss this
// database for all destinations.
macro Save_From_to ( ) {
// To and From are used in the dialplan, since we might change ${EXTEN}
Set(_To=${MACRO_EXTEN});
Set(_From=${CALLERID(num)});
NoOp("===== ${From} -> ${To});
// Save them in database for later use.
// Save the caller number at the called extension for *42 usage.
Set(DB(${To}/LastCaller)=${From});
// Where we called for *41
Set(DB(${From}/LastCalled)=${To});
};
This macro is called at the beginning of the "normal" dialplan.

Now, the *41 which registers the "camp-on" using the data saved above:
// *41: Camp on the last extension dialled
*41 => {
Set(tmp=${DB(${CALLERID(num)}/LastCalled)});
// Save it so when the other side hangs it will see it and dial us.
Set(DB(${tmp}/CallBack)=${CALLERID(num)});
// Say the number to caller so he can verify...
SayDigits(${tmp});
Hangup();
};

And now the H extension for handling it:

// The Hangup extension which is called when the call is hanged. See whether
// we have some waiting callback waiting on this extension.
h => {
ResetCDR(w); // To make the CDR correct.
NoOp(${From});

// We have to check the two sides of the call: Those who camp on the calling
and
// those who camp on the called.
Set(tmp=${DB(${From}/CallBack)}); // The calling.
if("${tmp}" != "") { // Something is there.
DBdel(${From}/CallBack); // And delete it...
// Create the callfile and then move it to the spool directory to make the
call.
System(echo Channel: SIP/${tmp} >
/tmp/test.tmp${From})
;
System(echo WaitTime: 20 >> /tmp/test.tmp${From});
System(echo Extension: ${From} >>
/tmp/test.tmp${From});
System(echo CallerID: Callback \\\<${tmp}\\\> >>
/tmp/te
st.tmp${From});
System(mv /tmp/test.tmp${From}
/var/spool/asterisk/outgo
ing/);
};

Set(tmp=${DB(${To}/CallBack)}); // The called
if("${tmp}" != "") { // Something is there
DBdel(${To}/CallBack); // And delete it...
// Create the callfile and then move it to the spool directory to make the
call.
System(echo Channel: SIP/${tmp} > /tmp/test.tmp${To});
System(echo WaitTime: 20 >> /tmp/test.tmp${To});
System(echo Extension: ${To} >> /tmp/test.tmp${To});
System(echo CallerID: Callback \\\<${tmp}\\\> >>
/tmp/te
st.tmp${To});
System(mv /tmp/test.tmp${To}
/var/spool/asterisk/outgoin
g/);
};
};

Good luck! __Yehavi:

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