Mitel Forums - The Unofficial Source

Mitel Forums => Mitel MiVoice Business/MCD/3300 => Topic started by: pakman on June 26, 2014, 08:37:46 AM

Title: Phone Rebooting
Post by: pakman on June 26, 2014, 08:37:46 AM

I have several phones that reboot when someone logs into their PC for the day or logs off at the end of the day. Has anyone else come across this before and found a solution?

Thanks,

Title: Re: Phone Rebooting
Post by: jrg0852 on June 26, 2014, 09:51:13 AM

Are the PCs/laptops tethered to the back of the phones, or separate network?

Title: Re: Phone Rebooting
Post by: ralph on June 26, 2014, 10:08:25 AM

I've never heard of this.
Does it happen every time?

What type of phones are they using?
Are they on the same VLAN?
Are you using any apps such as UCA?

You may have to do a wireshark capture on that one to see what's really going on.

Ralph

Title: Re: Phone Rebooting
Post by: pakman on June 26, 2014, 10:32:41 AM

The PC's do connect through the phones.
They are 5330's and 5340's
it's everytime according to the end user.
The phones sit on a different VLAN than the pc. The phone's receive their IP via the PBX and PC's through another DHCP server.
They do use applications but not UCA as I'm not sure what this is. They use are core applications but those are used everywhere and this is happening at only a few sites.

Thanks,

Title: Re: Phone Rebooting
Post by: jrg0852 on June 26, 2014, 11:25:42 AM

I know certain switches have a security feature on the ports that if you connect a PC to the back of the phone, it locks out that port in the switch. Could this be what is happening?

Title: Re: Phone Rebooting
Post by: lundah on June 26, 2014, 11:36:32 AM

I remember reading something over on Tek-Tips about certain PC's (I think there were a handful of specific HP and/or Dell models) that send out a blast of IPV6 traffic on sleep/shutdown which goofs up either the L2 switch embedded in the phone or the network switch the phone is connected to. The fix was a firmware update on the PC. Maybe use WireShark to see what the PC is putting out on shutdown and startup and see if that's what's happening for you.

Title: Re: Phone Rebooting
Post by: pakman on June 27, 2014, 08:41:21 AM

Thanks for the responses. I don't think it's a switch issue as it's not happening to all PC's at the site and they all ride the same switch. Now we did get some newer laptops and PC's and will look into the IPv6 function. Once I figure it out I will post back.

Thanks,

Title: Re: Phone Rebooting
Post by: jrg0852 on June 27, 2014, 10:16:45 AM

I uncheck the IPv6 always as it isn't deployed yet and may cause issues. Thanks.