I have sent a Polycom IP500 phone to an overseas remote user who has a Speedtouch adsl modem/router. The phone is connected to the 4 port router which performs NAT for the network. The phone rboots, find the server, downloads it's config and tried to register. Then it immediately becomes UNREACHABLE.

Jul 26 17:44:41 NOTICE[21026]: chan_sip.c:9138 handle_request_register: Registration from '<sip:[EMAIL PROTECTED]>' failed for '209.59.xxx.xxx'

816/816 209.59.xxx.xxx D N 255.255.255.255 10979 UNREACHABLE

I have tried everything I can think of. Is it possible the ISP is blocking the SIP packets going back to the phone?

The entry in sip.conf is:
[816]
type=friend
host=dynamic
dtmfmode=rfc2833
username=816
secret=mysecret
canreinvite=no
callerid="Me" <816>
mailbox=816
disallow=all
allow=g729
allow=ulaw
nat=yes
qualify=yes
context=default

--
Chris Mason
NetConcepts
(264) 497-5670 Fax: (264) 497-8463
Int: (305) 704-7249 Fax: (815)301-9759 Cell: 264-235-5670 Yahoo IM: [EMAIL PROTECTED]
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