asterisk users - Feb 2004 - Registering Polycom IP 500 with Asterisk [revised]

Hi,

I'm a new Asterisk user who is having trouble getting his IP 500 to
register with Asterisk (I've already gotten things up and running with
X-Lite softphones just fine).

I have an X-Lite softphone on extension 2000, and the polycom on 
extension 2002.  I can dial '2002' from X-Lite and my polycom phone 
rings and the call completes just fine.  But I cannot dial 2000 from the 
polycom (seemingly because the polycom is failing to register with 
Asterisk).


In phone1.cfg I've set
reg.1.server.1.address="216.26.108.143"
reg.1.server.1.port="5060"
and in sip.cfg I have
<server voIpProt.server.1.address="216.26.108.143"

but when I reboot the phone I don't get anything like the
"Registered SIP '2000' at 216.26.108.141 port 5060 expires
1800"
message I get on the Asterisk console when I start up X-Lite. Instead I get:
---
Feb 19 12:49:30 NOTICE[81926]: chan_sip.c:5568 handle_request: 
Registration from '"2002"
<sip:216.26.108.143@216.26.108.143>' failed
for '216.26.108.168'
---


Here is my sip.conf entry:
[2002]
type=friend
username=2002
password=test
host=dynamic
dtmfmode=inband
defaultip=216.26.108.168
mailbox=102


All of my config files for both asterisk and the polycom phone are
viewable at http://www.enoreo.on.ca/~jametrel/ ... in the directory
'asterisk' for the /etc/asterisk files; and the directory
'polycom' for
the ftp directory that contains the firmware and config files.

Thanks in advance for any advice,
James