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<FONT SIZE="2" POINTSIZE="11" DEFAULT="SIZE">Sounds like the registration interval in the phones is less than the required registration interval of the server. I had this occur when using a SIP phone with an ITSP.<BR>
<BR>
Michael<BR>
<BR>
On Wed, 28 Jun 2006 12:04:40 -0400, Von L. wrote:<BR>
<BR>
>Hello,<BR>
><BR>
>Here is a breakdown of the issue I am experiencing. I have three remote<BR>
>employees, in various states, who have Polycom 501 phones. They are<BR>
>unable to receive incoming calls after a few minutes of the phones being<BR>
>plugged in. They work immediately after being plugged in, but they lose<BR>
>the ability shortly thereafter. They can always make outbound calls, but<BR>
>only to real phone numbers, not extensions.<BR>
><BR>
>They each have NAT routers, and I have triple checked that they have<BR>
>opened/forwarded the correct ports, basically 5060-30000 UDP. Once they<BR>
>plug the phone it (power and ethernet) I see on the CLI console of the<BR>
>asterisk server that the phones register:<BR>
><BR>
>Asterisk CVS-v1-0-12/01/04-18:46:01, Copyright (C) 1999-2004 Digium.<BR>
>Written by Mark Spencer <<FONT COLOR=0000ff><U>markster@digium.com<FONT COLOR=000000 DEFAULT="COLOR"></U>><BR>
>=========================================================================<BR>
>Connected to Asterisk CVS-v1-0-12/01/04-18:46:01 currently running on<BR>
>bell (pid = 3652)<BR>
>nell*CLI><BR>
>Verbosity is at least 10<BR>
>-- Registered SIP '3015' at XXX.XXX.XXX.XXX port 1500 expires 3600<BR>
><BR>
>Here is the top part of my sip.conf<BR>
><BR>
>;_____________________________________________________________<BR>
>;sip.conf<BR>
>;_____________________________________________________________<BR>
><BR>
>[general]<BR>
>port=5060<BR>
>bindaddr=0.0.0.0<BR>
>externip=XXX.XXX.XXX.XXX<BR>
>localnet=XXX.XXX.XXX.XXX/255.255.255.248<BR>
>canreinvite=no<BR>
>tos=reliability<BR>
>srvlookup=yes<BR>
>disallow=all<BR>
>allow=ulaw<BR>
>dtmfmode=rfc2833<BR>
>nat=yes<BR>
>ignoreregexpire=yes<BR>
><BR>
>I know it has something to do with the NAT because if I plug my Polycom<BR>
>directly into my cable modem, thus making it sit on the Internet and<BR>
>have a real IP, everything works just fine.<BR>
><BR>
>I am curious what I am missing.<BR>
><BR>
>Thanks.<BR>
><BR>
>Von L.<BR>
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<BR>
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