Toshiba IP5122 phones rebooting

[jffmsly]

I have a Toshiba system that is acting very strangely. When we unplug and plug back an IP5122 telephone into the switch all the phones on the IPU card where that phone resides reboot. I am an dedicated Avaya person and would be able to find this easily if it was on a CLAN. But the Toshiba is a bit restrictive.
If we reboot a 2010 phone it works fine and doesn't affect other phones. We have cat6 going to all phones. We have eliminated the wiring by taking the phone straight to the switch. Problem still happens. Any help would be appreciated.

 

[VinceWhirlwind]

Check how much PoE the switch is capable of providing, check what the phones are supposed to draw, then get on the switch and check the PoE allocations to see if it is near its limit.

Don't forget that PoE utilisation will go up when the phone is off-hook and will also be higher on Gb ports.

 

[VinceWhirlwind]

Also, the switch might be more concerned with an allocation rather than just utilisation - the device may negotiate a PoE allocation on boot-up which can be a lot higher that its actual utilisation.

 

[jffmsly]

PoE is not the issue. When this all started we hought about the PoE allocation also. What we have done is disabled PoE on all the switch ports and put bricks at every location. Seems to be a fix that really was not the issue. The reboots have continued.

 

[VinceWhirlwind]

It's your IPU card resetting itself then.