virtual superloops

[eastcoast10]

I am still relatively new with Nortel products but as I get more into the product I find I am getting questions that searching through the Nortel Practices don't answer.

For example I recently turned up a SIP trunk on a 1000M system and in the process used virtual TNs to do so. I simply went into ld 97 and activated the virtual TNs.

The same questions comes up when dealing with phantoms which again are virtual.

My understanding is that loops and superloops are basically timeslots into the switching backplane of the PBX. They are a means of using the resources of the PBX to switch calls.

The Question I have is do these virtual connections actually end up corresponding to cards in the network shelves of the PBX? If you need more virtual TNs do you actually add a network card that provides the required switching resources into the PBX?

or

Are one of the common cards always supplied with the PBX providing the virtual loop functionality and depending on the model of your PBX you are restricted to only a certain number of virtual loops because you only get a certain number of required common cards.

so... With digital or analogue phones sets you can add loops/superloops cards to increase your capacity. Do you have to add more cards of a certain type to add virtual loops?

 

[bigindian65]

They do correspond to standard logic. whatever V or N loops you have, you have taken a physical spot away, as you can't have virtual Supl 84 and then physically place a Net card in the same slot group 2 shelf 1 of an Option system. As well as, they follow the same engineering, 0-16 cards/TNS on card. There are loop/capacity limits to any system, depends on PBX type and Rls, VGWs and a lot more.

Mato' Was'aka