sundance-communications.com/forum Forums TDM Business Telephone Systems Toshiba Telephones & Systems IPT reboots

We have about 30 IPT's (2010's) on our system (CIX 670 with LIPU and LIPS) - all been superb for about 3 years now.

Just recently (about a month) some of the IPT's come up randomly with IPU ALIVE PACKET STOP and restart....a couple of times the user has been in the middle of a call when its done it sometimes when idle. Once or twice the user says that all the LED's flash like its Christmas before the restart.. 8-)

There are no routers /firewalls as its a simple switched network of about 100 devices.

Network monitoring (pinging) shows no downtime on any of ...
the IPT's
the iES
the CIX processor
the LIPU/LIPS
..and the restarting phones always reconnect immediately and are then fine for hours.

I have replicated this between the CIX and a IPT connected to 2 ports of the same switch locally.

Network traffic is almost non-existent (the switch the CIX and the phones are on is a Catalyst 4000 and it shows 0% as highest traffic load!)

I have unplugged problem phones and the LIPU/LIPS and pinged to see if a duplicate IP was the issue - nothing found.

If anyone has anymore suggestions would be grateful.....

many thanks
Dave

how any handsets are you running on the LIPU/LIPS? and what is the codec used G711?

Approx 26 and G711. This has been the case for about 3 yrs now.

Just checking as running in G729a with 32 ms echo cancel delay reduces the LIPU/LIPS down to 24 ports.

Are you running the latest version of firmware on the LIPU 02_07?
The handsets should be running 2M software in them as well.

Might be worth checking/upgrading to be sure everything is running the latest versions just to eliminate that as the problem.

Also have you spoke to TIU to see what they suggest?
Speak to Alan or Simon and say Hi from Carl