Re: PLANTRONICS Headphone won't work with IP 501 sip,...
Dont plugged into the headset jack. Like Nortel, connect headset line with phone base unit in receiver jack and plugged your phone receiver wire into headset or plantronic base unit. This will work. I am sorry, my english is not too good but hope you understand it now. But the pully is not working properly with IP501..I mean it is not good to pickup IP501 receiver and put it back right place.
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If your phone isn't on a constant reboot cycle and can boot up, then go into Admin Setting and do a Format File System reset. NOTE: Only try this if you know how to download the software files onto the phone via FTP server. Once you download the latest software your phone should be almost as good as new.
try to turn off the Polycom device. When you turn it back on, press Setup. from the options, select server then click edit. Then select the item Trivial FTP (that setup depends on your ISP), and type the IP address assigned to your network (example 192.168.90.90) then hit OK. click exit several times then press Save & reboot. If it did not work, let us know...
Default Passwords: To get into the web interface, the default username/password is "Polycom"/"456" (Note that this does not work with Safari 1.2.2.) To get into the Admin interface on the hard phone, the password is "456". (Prior to v1.3.1, the web interfaces to the phone uses "Polycom"/"SpIp" as the username/password.) The "user password" (not used much) defaults to "123".
To reset a lost admin password to default: at phone boot, during the 5 second countdown, push/hold 468* on the phone. Enter the phone's MAC address as the password. This will reset network info but keep peers loaded. Tested on Soundpoint IP 650.
Make sure you have the latest BootROM and SIP config files for this
polycom(sip.ld, sip.cfg, etc...) on your TFTP server. If you do not
have this - download from here - http://www.polycom.com/support/voice/soundpoint_ip/soundpoint_ip501.html
If you do not have a TFTP server, you can download one for free.
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.
This in it's most basic description means that the phone is unable to register with the SIP server, most likely for lack of internet connectivity or a firewall blocking the packets.
If you've verified connectivity and opened the proper ports and the phone fails to initialize and still getting “URL Call Disabled” or all of the above parameters are correct, update the firmware for the router. This can usually be done within the router configuration. Then reboot in order, the cable modem or DSL, the router or switch, then the phone. This may solve the problem.
If still having the same issue, confirm in the router configuration for settings such as SIP proxy, gateway, or application layer or any configuration setting for SIP or VOIP. If any of these do exist, make sure they are turned off as these may only confuse or adversely affect many implementations.