PoE Cable for Polycom IP 500

"If you need to remove the resource files from a phone at some later date-for example, you are giving the phone to a new user-instructions on how to put the phone into the factory default state can be found in 'Quick Tip 18298: Resetting and Rebooting SoundPoint IP, SoundStation IP, and Polycom VVX 1500 Phones' at http://support.polycom.com/global/documents/support/technical/products/voice/SoundPointIP_Resetting_Log_Files_QT18298.pdf "

http://supportdocs.polycom.com/PolycomService/support/global/documents/support/setup_maintenance/products/voice/spip_ssip_vvx_Admin_Guide_SIP_3_2_2_eng.pdf

Makes sure your Firmware is all upto date. Had the same issue with the soundpoint ip 501.

You need to reinstall all the files back onto the phone. You can get the files from the Polycom Website. You can also follow the instruction from my Polycom 501 Fixya blog to see how its done.

For one line, you need both upstream and downstream of 90kbps for good quality.

Check on the router if you are distributing enough IP addresses.

I think you have to have the upgraded cable modem with the rj11 on the back in order to pull the voip dialtone. Hope this helps

As you have probably found, SIP phones are not supported until R5, which just came out.

Ohh this mean, you did not register this extension on your phone system. Create this extension on your phone system. Be sure that password given on Phonesystem is also configured on phone too.

This means the phone's SIP application has been erased. You will need to download the SIP app and BootROM from the Polycom support page, host the files on a boot server, and then point the phone to this server from the server menu so the phone will reboot and download the files.

http://www.polycom.com/support/voice/soundpoint_ip/soundpoint_ip330_320.html

u have the cable plugged in backwards
check it