Archibald J. Cox

Theoretical response: for maximum configuration you could have each superloop controlling one IPE module (I think). Option 61C has a total of 8 superloops, times 2 IPE per superloop leaves you with 16 IPE modules. If you have a one-to-one superloop-to-IPE correlation then you would have a maximum theoretical possibility of 8 IPE modules.

However, due to loops being used for Conf/TDS/PRI/DTI etc. etc. as well as slots being used for SDI cards and what-have-you, you're looking at significantly fewer IPE modules than what is "theoretically" possible. Figure out which superloops are currently available from the choices of 0,4,8,12,16,20,24 and 28, then figure out if you will run 1 or 2 IPE modules from each.

Arch

Pirates_Ghost

OHHHHHHHHK...
can you repeat that in English please

Been a LONG time since I dealt with hardware (4years) and then it wasn't in Nortelish (or is it Nortelven?)

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jack

P,

That depends.

A 61c is a single network system but depending on traffic loads anywhere from one to two (typically) shelves can be configured per superloop.

There are certaintly other ways of doing this, limited only by cabling, common practice and your traffic loads.

Be a tad more specific and we can go from there.

Jack

ps -- looking for a consultant? :wink: :wink:

jack

SORRY!!!!

Meant to say that the 61c is a single network GROUP system.

jack

Pirates_Ghost

Thanks mate! making sense again (and get in touch with Princess...she's got more openings )

As to my issue, I've just got to give a good justification to swap an existing 61c (running 5 T's (three dchl)) in a three column config (one column is three IPE shelves, one is three Net/CPU/Com Eq shelving the final is 2 IPE shelves)....into a soon to be mothballed 81c.

Money's not tight, but a deciding factor (for me anyway) and comes down to: 800 users, two unused digital cards left, no more space for cards, but slots for at least one more T ; possible growth in the next year....

Cheaper (obviously) to go to another IPE shelf and upgrade to Succession...OR....better to upgrade the 81 to successsion and ship it up to replace the 61?
Suggestions?

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jack

T,

Thanks, I owe her a call bad me!!!!

My argument would be as follows --

Multi Network group vs Single network group, depending on your expansion plans this could be a huge difference should you run out of network space to add common equipment cards.

As you stated in a 61 both cores are in a single collum vs an 81 they are in adjacent collums, what happens if a a breaker trips to the 61 core collum?

Capacity again depending on your growth projectins a current 81 can grow to approx. 16k stations.

Why moth ball a more resiliant system that could use the existing IPE?

Fletch/GW -- correct me where I go wrong here, but Nortel is offering a managed service that would for you to migrate your database as part of the upgrade similar to a regular software upgrade.

My .02

Jack

Fletch

Nit sure I understand your question Jack

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dixiedogger

nortel now ships 61c with processors in seperate colums and I seperated a many of them myself before they started doing it. All it takes is about 2 hours labor and a 50 dollar cable if you do it on the front end. Also one superloop can support 2 ipe shelves if 120 timeslots is not an issue

gwebster

It is possible to do a database conversion from an Option 61C to an Option 81C as part of an upgrade process so I wouldn't worry about that aspect. There is also a process to transfer ISM credits from one system to another (for example if you wanted to decommission the 61C and add to the 81C, or vice versa).

You haven't mentioned the processors on the 61C/81C (where hardware lifecycle could come into play) of the respective software releases (which will indicate whether or not you can add capacity without having to upgrade to Succession 3.0).