asterisk users - Jun 2004 - SIP error 407 - can't make outgoing calls

I am using a IPDialog siptone II. I can take incoming calls, but when I try
and make an outgoing call I get a SIP 407 error. 

Can some kind soul explain to me what I am doing wrong? 

Here's what I found in the wiki:

  If a proxy does not accept the credentials sent with a request, it SHOULD
return a 407 (Proxy Authentication Required). The response MUST include a
Proxy-Authenticate header field containing a (possibly new) challenge
applicable to the proxy for the requested resource.

Here's what I have in sip.conf
  [514]
  type=friend           ; This device takes and makes calls
  username=514
  secret=password
  context=inside
  callerid="Paul Mahler" <4154424024>
  qualify=1000
  host=dynamic          ; This host is not on the same IP addr every time
  canreinvite=no
  mailbox=514@inside           ; Activate the message waiting light for
waiting messages
  ;defaultip=192.168.0.102

Here's the sip debug showing the error:

  to 209.234.100.68:5060
  Retransmitting #5 (no NAT):
  SIP/2.0 407 Proxy Authentication Required
  Via: SIP/2.0/UDP 209.234.100.68:5060
  From: "514" <sip:514@216.38.136.149>;tag=00003397-f0f0c367 
  To: "503" <sip:503@216.38.136.149>;tag=as0528d61b
  Call-ID: 00004814-f0f0b8e4@209.234.100.68 
  CSeq: 14057 INVITE
  User-Agent: Asterisk PBX
  Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER
  Contact: <sip:503@216.38.136.149>
  Proxy-Authenticate: Digest realm="asterisk",
nonce="230958ab"
  Content-Length: 0

The password at the phone is the same as the password in sip.conf. 

Thanks!
 

Paul Mahler 
pmahler@signate.com <mailto:pmahler@signate.com>
<http://www.signate.com/> 
Signate, LLC
665 Third Street
Suite 100
San Francisco, CA
 94107-1901

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