CDP is cisco discovery protocol for automatic VLAN setup.<br><br>Did you read these links:<br><a href="http://www.voip-info.org/wiki-Polycom+Phones">http://www.voip-info.org/wiki-Polycom+Phones</a><br><a href="http://www.voip-info.org/wiki/index.php?page=Polycom+Soundpoint+IP+501">
http://www.voip-info.org/wiki/index.php?page=Polycom+Soundpoint+IP+501</a><br><a href="http://www.voip-info.org/wiki/view/Asterisk@Home+Handbook+Wiki+Chapter+7#722Polycom">http://www.voip-info.org/wiki/view/Asterisk@Home+Handbook+Wiki+Chapter+7#722Polycom
</a><br><br>And I wrote about some gotchas:<br><a href="http://justinhamade.blogspot.com/2007/04/polycom-presence-and-sip-500-errors.html">http://justinhamade.blogspot.com/2007/04/polycom-presence-and-sip-500-errors.html</a>
<br><a href="http://justinhamade.blogspot.com/2007/03/provisioning-polycom-phones.html">http://justinhamade.blogspot.com/2007/03/provisioning-polycom-phones.html</a><br><br>Justin<br><br><div><span class="gmail_quote">On 4/25/07,
<b class="gmail_sendername">Brad Sumrall</b> <<a href="mailto:Brads@ftnco.com">Brads@ftnco.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br><br>Access the phones through the web interface,<br>Compare version numbers with the phones that work<br>Compare only with other 501 phones<br>Make sure all settings are identical, most polycom web interfaces will loose
<br>there setting adjustments if you click on another tab, so do one page at a<br>time, click save, then let it reboot, then go to next section.<br><br>Also, is you asterisk server local?<br>If remote, and the above does not work, look at routing.
<br>Are you behind NAT?<br>Try and access the phone via telnet from a remote server to the auth ports<br>of the phone and vice verse. (I know you can telnet from a Cisco phone, I<br>would imagine polycom has a similar features)
<br><br>Let me know if this helps!!!<br>Polycom is very picky!<br><br>Brad<br><br>-----Original Message-----<br>From: <a href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a><br>
[mailto:<a href="mailto:asterisk-users-bounces@lists.digium.com">asterisk-users-bounces@lists.digium.com</a>] On Behalf Of Jim Freeze<br>Sent: Wednesday, April 25, 2007 4:37 PM<br>To: Asterisk Users Mailing List - Non-Commercial Discussion
<br>Subject: [asterisk-users] Polycom Provisioning Problems<br><br>Hello<br><br>I am having some difficulties provisioning a set of polycom 501 phones,<br>while another set of phones are working just fine.<br><br>My Asterisk box is dual homed. On one network, where the asterisk box
<br>runs dhcpd and there are only phones, provisioning works as expected.<br><br>However, for phones that are connected thru the other interface (and<br>receive their IP address from a separate router), they are not provisioning.
<br>To add to the confusion, it seems that they fail in inconsistent ways.<br><br>Even after specifying the FTP server address, name and password, these<br>phones will complain that they cannot connect to the server, and begin
<br>loading<br>the stored configuration. In addition,<br>when they come up, their dates are set to Jan 1, 2001. (I think I can fix<br>this<br>by specifying the snmtp address, but the other phones seem to be able to<br>find
<br>the snmtp on their own.)<br><br>In inspecting the <MAC>-boot.log files, the phones that fail have CDP<br>enabled,<br>while the phones that succeed have CDP disabled. I think this is<br>Continual Data Protection,
<br>but don't see where to disable it on the phone interface. Is this a<br>cause of the failure?<br><br>Any insight will be greatly appreciated.<br><br>Thanks<br><br>--<br>Jim Freeze<br>_______________________________________________
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-- <br>Justin