atcomsystems.ca/forum Forums General General Telephone & Systems Information Disconnect Supervision

This product has saved us --

https://www.vikingelectronics.com/products/view_product.php?pid=497

Disconnect Supervision came with CO lines then I started having problems a few years ago with hung lines, The local telco took it off lines then wanted a ridiculous one time fee to put it back on, the biggest assinine telco stunt i have seen, I wont mention telco name but it starts with sprin and now starts with embar!
Default on a DMS switch has it ON, these scumbags went thru and turned it off so they could rape their customers!
JUST WRONG!!

We have the same problem here. Embarq makes you pay $3.00 per line to have it with a $35.00 on time charge. When we sell a new system we have the phone company add it to their lines and explain to the customer that we are not doing this to them but the phone co.

Like Kevin says JUST WRONG!!!! :bang:


Cosmo

Not to be a curmudgeon - but isn't this why ground start was invented?

Some Voice Mail systems and Conference Bridges have always been problematic in their disconnect recognition and the gadget that Noisy Cow recommends seems like it would do the trick.

If people are having trouble with their Telephone Systems disconnecting properly is Ground Start no longer an available option for these systems?

Sam

Sam, quite a few systems simply don't offer ground start trunk ports. In the PBX world, loop start lines are rarely heard of, but in the key system world, it's the other way around. Or so it seems.

Justin

Justin -

I figured that, but I was wondering about all these hybrids. I seem to recall that the few I worked on back in the day would take them - sometimes it was a software option, you didn't even need a different card.

Sam

I think that the true benefit for ground-start trunks was to eliminate call collisions or "glare" where an outgoing call was attempted at precisely the same time that a call was coming in over the same trunk.

Supervision on loop trunks or even POTS lines has been the norm as long as I can remember, but that was long before the days of voice mail. The proverbial open loop just caused key system CO lines to release a hold condition when the call was abandoned.

Ed -

True. But true disconnect was also part of the equation. There used to be a thing called "Calling Party Disconnect" where if the calling party DIDN'T hang up then the call would stay up forever. Ground Start took care of things like that.

Sam