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Triad 2 system
#211879 08/16/07 10:54 AM
Joined: Jun 2004
Posts: 301
mfecko Offline OP
OP Offline
Joined: Jun 2004
Posts: 301
We've got an existing customer that has a Triad 2 installed. Been installed for years. This cust does stainless steel welding.

About 6 months ago we started getting reports of intermittent problems that manifest as follows:

Incoming call via dispatch vm to extension.
While talking to outside party, caller apparently goes on hold "magically".

We did a trace that indeed showed the hold button being pressed, though physicallym no one was pressing the hold button.

We changed phones, station cards, CO cards, re-initialized and reloaded software, to no avail.
We did these thing one a time.

We thought we might be getting interference from welding equipment, so we ran single pair shielded cable for the phones in the shop area. Properly grounded one end only, etc. NG.

We ran single pair shielded cable for the phones in the office area that seemed to be affected. NG.

We're out of ideas as to where to look next.

Any thoughts would be appreciated.


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Re: Triad 2 system
#211880 08/16/07 02:07 PM
Joined: Sep 2005
Posts: 971
Joined: Sep 2005
Posts: 971
check grounding in telephone room (ksu, ac outlet

Relocate station cabling as far away from suspected
generator of interference.

Have certified electrician check ground of welders.

In terminal room bond/ground everything vacant.

Dont forget about page access as it goes back to ksu. (wire)

Re: Triad 2 system
#211881 08/16/07 08:25 PM
Joined: Jan 2005
Posts: 15,237
Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,237
Most welding equipment uses "floating" DC outputs, meaning that the output isn't grounded like the building's AC wiring system. There is no reason why the output can't be grounded to the same building grounding/bonding system to see if it helps. Of course, all of the customer's welding rigs will need to be bonded to the building in order to effectively test this.

What concerns me is that this just started happening. My guess would be a defect in one of the welding rigs itself. Stainless welding isn't your traditional welding, so you should run my idea by their shop supervisor. Ask them if they will "clip" the welding ground to the building ground, even if they think it's already done.

Re: Triad 2 system
#211882 08/20/07 06:22 AM
Joined: Dec 2005
Posts: 639
Joined: Dec 2005
Posts: 639
I think if this just started happening and you've changed phones, wiring, station card,and whatever else, then maybe you should initialize the system and reprogram from scratch. Maybe it's a bug in the programming. It may be easier than trying to get them to ground all their welding equipment properly. If it doesn't work, then you havn't lost anything but time. Just a thought.

"I thought I was wrong once, but I was mistaken"

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