[Freeswitch-users] Automagic Phone Provisioning

digilord grae at digilord.net
Wed Sep 23 09:17:50 PDT 2009


I thought I had it figured out and was just missing one piece.  Brian
provided me with the missing info.  My assumptions were wrong.  Now I
need to find software that will do what he described.

On Wed, 2009-09-23 at 18:51 +0300, David Knell wrote:
> I don't think it's trivially possible, unless you can stick the PBX
> between the DHCP server and the rest of the network.  The reason is that
> DHCP reply packets are not broadcast, but sent back to the MAC address
> of the originator, so your Ethernet switch won't even let your PBX see
> the replies.
> 
> Even if it could see them, add something to them and retransmit, the
> client will almost certainly already have seen the original reply and
> would be likely just to ignore the later one.
> 
> Any reason why you can't just ask them to add that option to their
> existing DHCP server?  
> 
> And how do you know it's done, and, if you've figured out how to do it,
> could you share?
> 
> --Dave
> 
> > Hello all,
> > 	I know this is done and I think I figured out how to do it but I don't
> > want to reinvent the wheel so here goes.  I am looking for a program
> > that will sit on the PBX.  This program will intercept DHCP reply
> > packets destined for phones, inject "option 66" into the packet and
> > release it back onto the network.
> > 
> > Some of you might be wondering why I want a program like this.  Simple.
> > Lazy clients.  They don't want to mess with their network infrastructure
> > to assist us with automated deployment of SIP devices.  They also don't
> > want 50-100 devices connecting to an off site server downloading 20-40MB
> > of firmware on a reboot.
> > 
> > The PBX is not hard coded with an IP address.  It's DHCP.  They were
> > willing to allow the PBX on the network and assign it a static DHCP
> > address.
> > 
> > Is what I am looking for not possible?  Does someone have a sensible
> > solution that doesn't involve dropping the client (yes someone suggested
> > that)?
> > 
> > Thanks in advance for any help you can give.
> > 
> > DigiLord
> > _______________________________________________
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> > FreeSWITCH-users at lists.freeswitch.org
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