[Asterisk-Users] ISDN TBCT....

[Gavin Hollinger]

I guess everyone already has these docs but me.  Just in case.

http://www.loligo.com/asterisk/misc/GR_2BchanXfer.pdf
Generic Requirements for ISDN PRI Two B-ChannelTransfer

http://www.loligo.com/asterisk/misc/pri-tr41459_99.pdf
TECHNICAL REFERENCE 41459
AT&T Network
Integrated Services Digital Network (ISDN)
Primary Rate Interface
and
Special Application Specification
User - Network Interface Description


----- Original Message -----
From: "Mark Spencer" <markster at digium.com>
To: <asterisk-users at lists.digium.com>
Sent: Monday, November 10, 2003 2:14 PM
Subject: RE: [Asterisk-Users] ISDN TBCT....


> Facility IE seems to be the "ioctl" of the ISDN world.  Even if you look
> at the intel app note, it leaves out a lot of details about what's going
> on.  I'd love to get TBCT if anyone can find me a good, complete spec for
> implementing it.
>
> Mark
>
> On Mon, 10 Nov 2003, Gene Kochanowsky wrote:
>
> > Hi Gavin,
> >
> > According to Sprint here in Tallahassee it is supported on the DMS100
for an NI2 ISDN PRI. I am aware of the Intel tech note you refer to. You can
find the code snippit it contains spread all over the place. According to
the docs it was tested on a DMS100 using an NI2 ISDN PRI. However I have not
been able to get it to work. I need call transfer in my app and I do not
want to trombone. My problem is that I can find published specs on ISDN PRI
NI2 all the way down to the facility message. After that nothing. So I do
not know if the message I am sending is correct and both Sprint and Nortel
have been useless. If anyone has done this and would care to share what they
know about it I would appreciate it.
> >
> > Gene Kochanowsky
> >
> > -----Original Message-----
> > From: Gavin Hollinger [mailto:digium.com at gavinhollinger.com]
> > Sent: Mon 11/10/2003 2:00 PM
> > To: asterisk-users at lists.digium.com
> > Cc:
> > Subject: Re: [Asterisk-Users] ISDN TBCT....
> >
> >
> >
> > TBCT (Two B Channel Transfer) would drastically reduce b-channel load in
> > some applications.  Great for find me follow me Unified communicator
type
> > services.  Incoming calls answered on your cell phone etc.  I am very
> > uneducated on this feature.  How could I find out more about it?  Does
> > anyone have an example of this?  Does it work with Nortel?  Per Intel:
"this
> > feature is supported for the 5ESS and 4ESS protocols only"
> >
> >
http://resource.intel.com/telecom/support/releases/unix51/linux51/SR5.1_Linu
> > x/Onldoc/html_files/gcisdn/appxis23.htm
> >
> >
> > Network Facility Request - Two B Channel Transfer (TBCT) (Synchronous
Mode)
> > TBCT enables an ISDN PRI user to request the switch to connect together
two
> > independent calls on the user's interface. The two calls can be served
by
> > the same PRI trunk or by different PRI trunks. If the switch accepts the
> > request, the user is released from the calls and the two calls are
connected
> > directly. Billing for the two original calls continues in the same
manner as
> > if the transfer had not occurred. As an option, TBCT also allows for
> > transfer notification to the transferred users.
> >
> > TBCT works only when all of the following conditions are met:
> >
> > The user subscribes to TBCT (this feature is supported for the 5ESS and
4ESS
> > protocols only).
> >
> > The two calls are of compatible bearer capabilities.
> >
> > At least one of the two calls is answered. If the other call is outgoing
> > from the user, it may be either answered or alerting; if the other call
is
> > incoming to the user, it must be answered.
> >
> >
> > ----- Original Message -----
> > From: "Gene Kochanowsky" <gene at solutionsciences.com>
> > To: <asterisk-users at lists.digium.com>
> > Sent: Monday, November 10, 2003 6:59 AM
> > Subject: [Asterisk-Users] ISDN TBCT....
> >
> >
> > > Greetings,
> > >
> > > This may be a bit arcane but does anyone know what the contents of a
> > facility message should be for initiating a TBCT on an NI2 ISDN. I've
been
> > trying to get it to work on a DMS100 for the last four months to no
avail.
> > The message I am currently sending makes it to the switch but is
returned
> > with unknown message. Perhaps someone here has done it before and can
help
> > me out.
> > >
> > > Thanks
> > >
> > > Gene Kochanowsky
> > >                   ׫ Rǫf)+- ^+$K
  l  r  b v("oܢoj)fj b˝?j ^+$ 

> >
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> >
> >
> >
>
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