Error,application not present of polycom soundpoint P321,how do i solve this issue?

SOURCE: polycom ip501f error, application is not

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.

SOURCE: what is the default password for Polycom

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.

Testimonial: "Thanx a lot. Although I had managed to find the password for console but the web interface password was still missing. :-)"

SOURCE: error loading 0004f220429c.cfg

This means the phone cannot find its <mac>.cfg file on the boot server, and does not have one loaded in its own flash memory.
You will need to configure a boot server to host the SIP software, BootROM, and all the config files (these are included in with the SIP software).
You can download these from Polycom's product support page:
http://www.polycom.com/support/voice/soundpoint_ip/soundpoint_ip330_320.html

SOURCE: Polycom IP 330 SIP C Will not boot up

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

SOURCE: i am unable to push the configuration files into polycom soundpoint ip 330 through tftpd

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