asterisk users - Jan 2006 - Polycom phones and dynamic IP for NAT

I know the Polycoms work with NAT, but you have to specify the public
IP.

 

Is there anyway for it to discover the external IP automatically?

 

I like the phones (been playing with a 301) but for some of our clients
who have a dynamic IP (and no hope of getting a static ie cable or
residential DSL) I'd be afraid to use them since you have to specify the
IP.

 

What about the Cisco phones?  Is the IP hard set?  Are there any good
"dynamic IP" compatible SIP phones that aren't crap?

 

Bill

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Where do you have to set the public IP? We use dhcp Poly behind  
firewalls daily. Just set nat=yes in sip.conf


On Jan 23, 2006, at 3:26 PM, Bill Gibbs wrote:
> I know the Polycoms work with NAT, but you have to specify the  
> public IP.
>
>
>
> Is there anyway for it to discover the external IP automatically?
>
>
>
> I like the phones (been playing with a 301) but for some of our  
> clients who have a dynamic IP (and no hope of getting a static ie  
> cable or residential DSL) I?d be afraid to use them since you have  
> to specify the IP.
>
>
>
> What about the Cisco phones?  Is the IP hard set?  Are there any  
> good ?dynamic IP? compatible SIP phones that aren?t crap?
>
>
>
> Bill
>
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On Mon, 2006-01-23 at 16:26 -0500, Bill Gibbs wrote:
> I know the Polycoms work with NAT, but you have to specify the public
> IP.
No you don't, at least, I never have, and it works perfectly for me
every time.... I have a client who regularly moves their polycom 501
from home -> work and back again....
> I like the phones (been playing with a 301) but for some of our
> clients who have a dynamic IP (and no hope of getting a static ie
> cable or residential DSL) I?d be afraid to use them since you have to
> specify the IP.
I'd have no problem in using them in that scenario, as long as you trust
them to not run away with your hardware :) If they are likely to
damage/steal the hardware, then go with some more economical phone like
the grandstream, or even better, some of the AG1688 chipset phones with
an IAX firmware.
> What about the Cisco phones?  Is the IP hard set?  Are there any good
> ?dynamic IP? compatible SIP phones that aren?t crap?
I'm no expert on phones, but the polycom is the best I've seen yet...

Regards,
Adam