[cisco-voip] SRST: what about TFTP option 150??

[Erick Bergquist]

Anthony,

You don't need to worry about this when doing SRST as
the phone gets that information from call manager
server. 

The DHCP server phone gets it's IP,TFTP,etc from will
be normal and option 150 will go to call manager TFTP
server. The Call Manager device pool has SRST setting
specifying what SRST reference those devices will use
and that gets pushed down to phone as part of it's
config. SRST can be set to disable, use default
gateway, or another router for SRST use phone can
reach on the subnet. 

If phone loses it's connection to Call Manager, it
will try to register to backup callmanager if one
exists or is assigned, then will go to SRST if
configured and the router has SRST configured. The
phone already has a image loaded from call manager,
etc and it will check to see if call manager server is
back and re-home back to the call manager server when
it comes back.

Now, the SRST router acts as a gateway (H323, etc) so
you could configure it to have TCL script applications
on dial-peers, etc that you could leverage while in
fallback/SRST mode if you wanted to. If you wanted to
do this sort of thing, then you would need any extra
scripts, wav files, etc used on the flash. But that is
not part of the SRST function directly.

Erick

--- Anthony Kouloglou <akoul at dataways.gr> wrote:

> Hi all,
> suppose we have a central site with one CCM
> publisher and a remote site 
> with ip phones that register to the central site.
> We have configured SRST in the remote site as it is
> documented.
> *I cannot find what files should **be contained in
> **the tftp that runs 
> on the srst!!*
> Because the srst cannot point the option 150 to the
> central ccm since 
> SRST is needed when the link to the CCM is down!!
> So option 150 should point at the SRST gateway, but
> what files shall i 
> put there?
> 
> Thanks a lot
> Anthony
> > _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
> 



		
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