You should consider RESET LOCAL CONFIG:

Resetting Polycom Phones to Default

Also see: Troubleshooting page on key sequence to reset
Here are some details on what happens when you invoke the various
options under "Reset to Default". (Menu - 3 - 2 - <password> - 1 - 4.)
These are described in Polycom Quick Tip 18298, but some important
details are missing. [1]
Changes made through the Phone's Menu options or Web GUI or are
considered "Overrides", and are cached locally on the Phone. Many of
these, such as Line Registration and other SIP settings, overlap with
the contents of the configuration files.
Two things may come as a surprize to you:
  1.  Overrides have precedence over the configuration file contents.
  2.  Overrides are not removed when you invoke "Reset Device
Settings" under "Reset to Default".
When you change a Polycom's Boot server address from one sipXecs
server to another, you might expect it to pick up the new
configuration files and start working seamlessly. But you can get very
unexpected behaviour if the Polycom has locally cached Overrides of
SIP settings.
Even if you invoke "Reset Device Settings" the Overrides will not be cleared.
To clear the Overrides you need to invoke "Reset Local Config" under
"Reset to Default". You could instead invoke "Format File System"
which will erase everything except the BootROM, but that is more
difficult to recover from.
Recommendations:
  1.  Clear the Overrides before deploying any Polycom that has been
used before.
  2.  Avoid using a Polycom's Menu options to change anything under
"Advanced" with the exception of "Network Configuration" and "Change
Admin Password".
  3.  Avoid making any changes under a Polycom's Web GUI.

On Mon, Jun 14, 2010 at 9:01 PM, Tony Graziano
<[email protected]> wrote:
> I misread. They can call each other so they do register. If you can call
> each other you must be able to "see" the call come in to answer it.
>
> Hit the MENU button and change the ringer type/volume for calls.
> ============================
> Tony Graziano, Manager
> Telephone: 434.984.8430
> Fax: 434.984.8431
>
> Email: [email protected]
>
> LAN/Telephony/Security and Control Systems Helpdesk:
> Telephone: 434.984.8426
> Fax: 434.984.8427
>
> Helpdesk Contract Customers:
> http://www.myitdepartment.net/gethelp/
>
> ----- Original Message -----
> From: Tony Graziano <[email protected]>
> To: '[email protected]' <[email protected]>;
> '[email protected]' <[email protected]>
> Sent: Mon Jun 14 20:43:46 2010
> Subject: Re: [sipx-users] Polycom 500 phones register and work but dont ring
>
> These are old and eol. You should default the phones to get rid of any
> manual settings.
>
> Your message isn't clear. You can make internal calls but they don't ring?
> You don't need to register to call the AA. Check diagnostics to see if it is
> really registered.
>
> ============================
> Tony Graziano, Manager
> Telephone: 434.984.8430
> Fax: 434.984.8431
>
> Email: [email protected]
>
> LAN/Telephony/Security and Control Systems Helpdesk:
> Telephone: 434.984.8426
> Fax: 434.984.8427
>
> Helpdesk Contract Customers:
> http://www.myitdepartment.net/gethelp/
>
> ----- Original Message -----
> From: [email protected]
> <[email protected]>
> To: [email protected] <[email protected]>
> Sent: Mon Jun 14 19:45:17 2010
> Subject: [sipx-users] Polycom 500 phones register and work but dont ring
>
>
> Content-Type: text/plain;
>  charset="utf-8"
> Content-Transfer-Encoding: 8bit
> Organization: SipXecs Forum
> X-FUDforum: 08063afcdd00a6e76393c5b9527381e8 <47750>
> Message-ID: <[email protected]>
>
>
>
> Hi Im having problems with a couple of polycom soundpoint
> 500 phones that work great apart of the fact that they dont
> ring. Im able to make intenal calls from one to the other
> with no problem. I checked the volume and everything seems
> to be fine. Is there any weird checkbox I might be missing
> guys?
>
> Thanks of your help.
> _______________________________________________
> sipx-users mailing list [email protected]
> List Archive: http://list.sipfoundry.org/archive/sipx-users
> Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users
> sipXecs IP PBX -- http://www.sipfoundry.org/
>



-- 
======================
Tony Graziano, Manager
Telephone: 434.984.8430
sip: [email protected]
Fax: 434.984.8431

Email: [email protected]

LAN/Telephony/Security and Control Systems Helpdesk:
Telephone: 434.984.8426
sip: [email protected]
Fax: 434.984.8427

Helpdesk Contract Customers:
http://www.myitdepartment.net/gethelp/

Why do mathematicians always confuse Halloween and Christmas?
Because 31 Oct = 25 Dec.
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