Re: Call Route Failover (ASAP)

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Is the following scenario possible? (basically stating, skipping some
details, just a draft in sprit of telling what's beyond my mind)

1. Terminal --> GK: Call Request
[After ConnectionEstablished]
2. GK <-- Radius: Array of RedirectionIPs (=GW.1, GW.2, GW.3, ..., GW.n)
3. GK: Try GW.1
3.1. Catch if GW.1 returns FAIL signal (on EventError)
3.2. Try GW.2
and so on

----- Original Message -----
From: "Frank Fischer" <frank.fischer@xxxxxxxxxxxxxxxx>
To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
Sent: Saturday, July 09, 2005 1:56 PM
Subject: AW:  Call Route Failover (ASAP)


Some more thoughts in the case you would like to implement this in gnugk.

- Of course, when implementing this feature in gnugk (instead of an external
application) you could get much more control over the routing decision and
espacially more information about the reject causes
- If i get it rigth, this feature would require routed signalling or proxy
mode. It wouldn't run in direct signaling mode, because you need the Q.931
signalling to allow smart routing (partial rerouting) decisions
- you would have to react on quite a number of different Q.931 cause values
to decide on how to react
- since implementation on Q.931 causes differ from device to device, for a
general implementation it would be very usefull to also implement a Q.931
cause mapping table (to allow mapping of Q.931 cause values to internal
gnugk reject reasons).
- one could think to implement this feature in a general manner, no matter
if the called endpoint is a terminal or a gateway. Like this there would be
the possibility to build a kind of partial rerouting also for endpoints
(i.e. allowing to "take calls back" and terminating them on a different
endpoint, i.e. a voice mail system).

Cheers
Frank

> -----Ursprüngliche Nachricht-----
> Von: openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx
> [mailto:openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx] Im
> Auftrag von Frank Fischer
> Gesendet: Samstag, 9. Juli 2005 12:37
> An: openh323gk-users@xxxxxxxxxxxxxxxxxxxxx
> Betreff: AW:  Call Route Failover (ASAP)
>
> Basically you could create this feature using the current
> gnugk with no gnugk extensions at all. You could simply
> create an external script listening to the status port,
> tracking registrations of gateways and counting lines used
> and than route calls as desired.
>
> If you still want to implement is in the gnugk i guess it
> would be best to synchronize with Jan or Michal.
>
> Cheers
> Frank
> > -----Ursprüngliche Nachricht-----
> > Von: openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx
> > [mailto:openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx] Im
> Auftrag von
> > Ali Koyuncu (Intelicom)
> > Gesendet: Samstag, 9. Juli 2005 12:10
> > An: openh323gk-users@xxxxxxxxxxxxxxxxxxxxx
> > Betreff: Re:  Call Route Failover (ASAP)
> >
> > I will start to implement, but don't know where to start.
> > Just draft ideas flying around my brain. Is there anyone
> who can help
> > me in designing and implementing this feature? (i will
> provide what's
> > necessary).
> >
> > Regards,
> >
> > Ali
> >
> > ----- Original Message -----
> > From: "Tusar" <tusarbd@xxxxxxxxx>
> > To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx>
> > Sent: Saturday, July 09, 2005 9:35 AM
> > Subject: Re:  Call Route Failover (ASAP)
> >
> >
> > Hi,
> >
> > Is there any plan at near future to implement such a nice
> feature to
> > make GnuGK as a ROBUST GK ?
> >
> >
> > Regards,
> >
> > ..Tusar..
> >
> >
> > On 7/7/05, Nyamul Hassaan <mnhassan@xxxxxxx> wrote:
> > >
> > > This is not implement.
> > > GnuGK does not currently support failover switching.
> > >
> > > Regards
> > > HASSAAN
> > >
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: Ali Koyuncu
> > > To: openh323gk-users@xxxxxxxxxxxxxxxxxxxxx
> > > Sent: Thursday, July 07, 2005 21:50
> > > Subject:  Call Route Failover (ASAP)
> > >
> > >
> > >
> > > Hi to All,
> > >
> > >
> > >
> > > Let's say we have two gateways, GW_A and GW_B, both
> having the same
> > > destinations but with the -of course- different amounts (costs).
> > >
> > >
> > >
> > > Let's say GNUGK routes a call to GW_A. What if GW_A is
> down at the
> > > moment, or its lines not up; GnuGK can automatically route
> > this call
> > > to GW_B? Is
> > it
> > > possible, how?
> > >
> > >
> > >
> > > Thank you in advance,
> > >
> > >
> > >
> > > Ali Koyuncu
> >
> >
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July 14 at 8am PDT/11am EDT. We invite you to explore the latest in dual
core and dual graphics technology at this free one hour event hosted by HP, 
AMD, and NVIDIA.  To register visit http://www.hp.com/go/dualwebinar
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