Resize Definity 9

[campyracr]

We have a G3 spread over 3 cabinets. We are looking to downsize our switch as we no longer need or use all of the capacity. we have a number of TN746 & TN754s that will no longer be used.

Should We:
1) consolidate to two cabinets or balance the load across all three, but using fewer TN cards?
2) consolidate T1 cards or balance them?
3) remove unused stations before, during or after any consolidation?

 

[Bobg1]

Thats a hard call.
If you try to consolidate, you are making work for yourself.
If you move things to less cabinets you will have to rewire the ports you move from one cabinet to the other. You will also have to reprogram the stations and/or trunks to there new ports.
If you should decide to do this you will want to remove or x out the ports on stations before you pull any cards. An dyes I would get rid of all unused stations first, just to make it that much easier.

 

[mikeydidit]

Are you thinking of removing the third cabinet or just removing some circuit packs from your present configuration?


Mikey

 

[campyracr]

I was trying to see which would be the better path, simply removing the circuit packs or consolidating. Sounds like removing circuit packs would be the path of least resistance.

 

[Bobg1]

If you have circuit packs that you are not using any ports on by all means you can pull them. You might want to just pull them far enough to fully disconnect them, but leave them in the rack. Keeps them safe and handy.

 

[campyracr]

That's the plan, but several are still in use, although they need not be given the space we have on other cards.

 

[BuckWeet]

Well you also need to look at this, if you do consolidate, will you oversubscribe the port network? Each port network has only 512 timeslots, and usually 8 T1's is recommended max per port network..


BuckWeet

 

[cpartridge]

I Think BuckWeet is on the right path, oversubscription on a portnetwork can be call center suicide. If you do not have a call centre i.e. a dialtone switch, then this is less problematic to to the different demands placed on the trunks.

Firstly is this a G3r or Si or ???

If its an Si this may help...

From what you are indicating it sounds like you have a single PN with 3 cabinets (PPN). moving stuff around within a single port network will be largely ineffective, but none the less you should balance what you have amongst the cabinets. You can strip off the last cabinet as long as all the existing users can be accomodated. If you have less users then your trunking requirements should also diminish, It id the ISDN /PRI/ DS1 dards that will force the traffic on a port network....station cards only seem to ever generate 5-10% of total traffic and can be considered negligable.

cheers,

Chris Partridge

 

[campyracr]

Chris/Buckweet,

Thanks I had not considered the Timeslots. It is a G3, but we no longer have a callcenter...hence the downsize.

My goal is to consolidate stations from 8 to 16 or 24 port cards, keeping the unused as "hot" spares in the cabinet.

We're then going to adjust our maintence down to less coverage.

 

[Bobg1]

Campyracr
I see where you are going now. Been there done that...
Its a bit of a pain but yes you want to considate to as few cards (ports) as you can. Then just pull the other cards and leave them setting in the slot. No need to remove any cabinets.

 

[campyracr]

Bobg1,

OK, do I want to try to balance the load across the cabinets or just let the cards where they are?

 

[Bobg1]

It is probably easiest to leave them where they are.
Thats what I did when I did a consolidation like that.
Pick out the ones with the least used ports and move those ports to available spots on other cards.

 

[mikeydidit]

Just a warning for you. The maintenance will be based on the total number of ports not circuit packs. If you add 24 port packs and replace 2ea. 8 port packs you have increased the total ports by 8. Most Avaya business partners and Avaya will charge for total number of ports weather they are active or not. They get their port count on the " display capacity" screens. I am paying maintenance on unused DS1 ports. I have mine configured for 24 trunks on each but they can be for 32 ports. I pay for the other 8 that are not used.


Mikey

 

[Bobg1]

Mikey is correct, it is based on the number of installed ports. I believe that is why campyracr is trying to reduce his port count.

 

[gphone]

Going back to the begining, if you are going to have a number of T1 cards not in use, then that will be the easiest place to start. You will of course need to remove the programming associated with them and then as described in a previous post just pull the card out but leave in the slot for safe keeping. It will decrease the number of installed ports at least 24 at a time. For station level stuff you may want to search out cards where all the stations are no longer in use and delete those stations then remove the card. Since it sounds like you had a call center there are probably a few set up like that. Between those two approaches you may be able to decrease your maintenance quite a bit. The rest will be some work to cross connect and I would leave it as a 3 cabinet system.