Multiple Line Registration

[kmccracken]

Phone server: Asterisk 11
Phone model: T46G
Firmware version: T46-28.80.0.70.rom

I have several phones looking to my provisioning server. They download their config files and each phone tries to register 6 lines. For whatever reason, only some of the lines get registered. For example, on one phone 5 lines will register and show green, while one of the lines shows yellow and does not register. On another phone, all 6 lines will register fine. On yet another phone, 4 of the 6 lines will register.

I have experienced this in the past (on an older firmware version). My fix was to factor reset the phone, then re-download my config file. Usually that got all lines to register properly, but not in this case.

The phones shipped with an older firmware version, but I upgraded it. I didn't try the registrations before the upgrade. Once they booted & pulled their configs on the new firmware, the registration issue revealed itself. Doing the factory reset cleared the config, while maintaining the new firmware version; however, as mentioned above, re-provisioning the phone did not fix the issue.

Why are certain lines able to register and not others? Is this a firmware version problem? If so, should I go back to a previous firmware version?

Thank you in advance.