Why is LG Nortel IP Phone 8830e configured for SIP firmware not sending any dialog to OPen IMS (0packets captured)?

SOURCE: Converting Cisco 7940 IP Phone to SIP

Unlocking a Cisco 7940

Method 1:
1) Unplug the phone
2) Plug the phone back in while holding the # key
The phone will soon display “Reset key sequence detected”
3) After several lights flash press the following keys in order:
1 2 3 4 5 6 7 8 9 * 0 #
4) The phone will then ask you if you want to save the network configurations:
Save network cfg? 1=yes 2=no
5) The phone will soon display “Factory reset initiated” and will continue
through the boot up process.
If that process fails to work for some reason there
is a second method.

Method 2

Complete these steps:

1. Press Settings.
2. The Network Configuration lock symbol must be unlocked. If not, exit to the main window and press ** # again.
3. Press 3 on the keypad (or scroll down) for Network Configuration.
4. Press 33 on the keypad (or scroll down) to Erase Configuration.
5. Press the Yes softkey.
6. Press the Save softkey.

SOURCE: How to upgrade Firmware of phone LG KU990

There is no need it's still version 10. the a, b, or whatever letter it's on is to do specific network provider bits.

so you wont really notice anything different apart from the letter at the end of the version.

SOURCE: Hello, I have a Nortel 1140e with SIP firmware

First I will suggest you to upgrade the Firmware....check the ringer tune and volume is OK ... or try pressing Feature key * 6 and Press 1,2,3,4 or next to hear different type of ring types .....Press OK to save it....Now Try....Further result please let us know...Thanks for being with Fixya....Good Luck

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

SOURCE: how to configure STACK IP on nortel 2526t IN USE

for the answer to the query log on to the web site http://nortel.com/