atcomsystems.ca/forum Forums TDM Business Telephone Systems Inter-Tel Telephones & Systems IP phones reset everyday at 5 pm

What model phones are you using?
Do you know what version your IPRC is running?
You can find this thru the web interface or Telnet or Hyperterminal in one of the menus.

The endpoints are all 550.8662. Version is 8.1.3, boot version 1.2.3.

IPRC card is in the DMZ.

As stated, the phones connect fine, they just reboot 2-3 times a day.

10[17:21:36] Device 6 timeout warning 10/15 s.
20[17:21:41] Timeout on device 6 after 15 s.

These indicate call control heartbeat failures to respond on TCP5566.
There is a heartbeat (keep alive) signal which is constantly exchanged between the IPRC and endpoint which is why you see traffic even when the phones appear idle. (Sniff the wire, you'll see TCP traffic on 5566) If they volley is interrupted, the first warning is output. If there is no response from the endpoint after 15 seconds you get the second entry above.

Now, why is this happening? The firmware you have is a bit outdated. You could update it but I doubt that's the root problem. The message print only shows public IP's resetting, but you did say office phones reset, too. It doesn't look like all endpoints reset together from the timestamps. So I understand, the card is publically addressed and not NATted, correct? Are all ports open or are you port filtering (like in a non-NATted DMZ)?
I guess what I want to know is what device is between the IPRC and the ISP? Router, firewall or nothing but a switch?

Just a Cisco switch, then to Bell South's switch.

BTW, if anyone knows of any Inter-Tel engineers in the Greenville, SC area, please pass on my contact info.

Something that might be worth a try is to put a dumb switch (linksys/netgear/your choice) between your Cisco switch and your router, and put your IPRC ont the dumb switch as well. I've seen ip issues fixed this way before...

You may want to check the board ver on the phones. I had 59 of them in one office that kept resettiing. (for no reason) After I worked with Inter-tel Tech support for 9 months, we found that the rev level on these phones had a problem. Inter-tel shipped us new phones to replace the bad and we never had a reset. the Phones were 550.8662e (you may want to set your QOS on the phones too diffser 184). Good luck.

QoS will not help when the packets traverse the Internet, no matter what you set the ToS value to. Once the packet passes through a non-QoS enabled router, the ToS header will be set to 00000000 which is no QoS. (ToS value 184 translates to DCSP value 46, which is EF, or Expedited Forwarding)

BTW, Inter-Tel has a direct office in SC, it may be worth the money to give them a ring.

I have...they have no clue. Neither does the other big Inter-Tel gold partner here in town.

As mentioned earlier you want to upgrade the ip endpoints to 2.1.02 which allows for a longer timeout timer.

Things you may want to upgrade:
AXXESS to 8.234 (VM according to what you have)
IPRC V9.0
IP Phones V2.1.02 (tftp)

These versions has been out for some time now and are very stable.

There have been some issues when hitting the '3' botton on 8662 enpoints causing them to reset with revisions AI and earlier.

Verify the correct ports are unNATed to the public IP of the card:
5566 TCP
5567 UDP
5004-5569 UDP

Remember with the new dual mode ip phones, the IPRC can ONLY have v8.2 or v9.0 installed on it. V8.1.3 has numerous issues.

All of these upgrades will only take a few minutes to complete.

Good Luck