[Asterisk-Users] snom 190: dial tone without registration?

[alan]

Gavin Hamill <gdh at laterooms.com> wrote:

> On Monday 13 June 2005 16:42, alan wrote:
>
> > I'm currently evaluating the Sipura SPA-841, and snom 190 phones for use
> > in an Asterisk PBX/call center environment.

<snipped>
  enforce SIP channel IP restrictions in Asterisk without
  "host=<ipaddr>", or get the snom 190 to stop complaining when it's not
  registered
</snipped>

> How about tackling this with iptables and matching specific IP addresses on
> specific MAC addresses?

This solves part, but not all, of the problem.

This ensures that only authorized devices can connect to asterisk, and
that their IP addresses are also correct. But it doesn't force
each device to use only its assigned sip channel.

(That is: with dynamic IP registration, a valid IP/MAC could be
configured with another device's SIP registration information, and steal
calls which should be going to the other device.)

I suppose iptables in combination with sip secrets should be enough.

But realistically, I can already do what I want the way I want to do it,
with the SPA-841. I mostly need to decide: if this feature is lacking,
is it enough for me to prefer the Sipura over the snom?

Thanks again,

Alan Ferrency
pair Networks, Inc.
alan at pair.com