Replacing MICS with Fiber Extenders on large campus with IPO 1

[davidwalters]

I am interested in replacing a MICS 7.0 with NAM 4.1 on a school campus that has 12 buildings and is served via a fiber backbone and using Nortel Fiber Extenders to bring service to the remote buildings. They would like to keep their inventory of T7316e sets and just replace the KSU. Does IP

I know IPO will support the T7316e sets but how about the Fiber Extenders? If not any other ideas ow to do this?

 

[snowman50]

Ip phones

 

[davidwalters]

They want to keep their inventory of T7316e sets to reduce the cost. They do not want to spend that much money. It is a non profit school.

 

[CarGoSki]

MCK Nortel Norstar Modular EXTender (500-2170-000)?

AKA Citel.

Are those being used in your example?

 

[davidwalters]

Yes that's correct that is the model that we have installed

 

[tlpeter]

Why replace the system when they do not want to spend money?
The IPO does work best with the original Avaya IP Office phones.
But if there is a fiber in between the buildings then i would put in an IPO on such locations and use the server edition.
This will cost some more money but you can use the fiber to connect those IPO's over ethernet.


BAZINGA!

I'm not insane, my mother had me tested!

 

[maxse]

It won't work because there is a limit on Nortel sets that can be used and I believe you have to be in basic mode only.

 

[yankblan]

No reason it shouldn't work. Thing is, from IPO to IPO, I have seen very bizarre and varying results with Norstar sets. Some work great, others have intermittent problems that are solved with a phone reboot, others have problems that need a system reboot. I never found a common thread on those that had problems.

So adding the MCK in the equation, could be risky. If you can, I'd bring in a demo on site with a TCM8 card and run tests.

ACSS-SME

http://interconnexionsld.ca/

 

[maxse]

What is the maximum number of nortel sets that can be used?

 

[yankblan]

Good question, but I have seen a couple of sites running over a hundred; I think it's system max

ACSS-SME

http://interconnexionsld.ca/

 

[mforrence]

It won't work because there is a limit on Nortel sets that can be used and I believe you have to be in basic mode only.

In standard operating mode, the limit on Nortel sets is no different than any other digital set - only the Nortel capable module is required. You can run in Essential or Preferred. To the OP - the IP Office does not have a fiber extender like Norstar did. If you're dead set on retaining your investment in telephones, then an IPO control in each building is the only viable option. I sure wish that someone would come up with a fiber extender solution for IPO expansion modules - but as of yet, it hasn't happened.

 

[EaglePromo]

Here is my 2 cents. I think that AVAYA should have fully considered all the ways that Nortel provided service to it's network for example the large campus setting that use fiber extenders. It sounds like they just planned on providing service to a small select single system network like the MICS and CICS and were not concerned about anything larger. When the BCM came along they provided a fiber extender that would allow the old MICS systems with fiber extenders to be replaced easily with a BCM.

 

[maxse]

Couldn't you drop an expansion cab over fiber using a media converter?

 

[mforrence]

Couldn't you drop an expansion cab over fiber using a media converter?

It would be great if there were an appropriate media converter on the market. The expansion modules use proprietary signaling when communicating with the control - so converters that supported that signaling would be required.

 

[jamie77]

When the people at Network Alchemy decided on using an ETSI based protcol for the expansion ports, they made a mistake. These should have been ethernet based or fibre based. Even the old SDX used fibre to connect GCU strings in the early 90's.

But here we are and Avaya are pushing IP phones so can't ever see solution to this puzzle.

Jamie Green

[bold]A[/bold]vaya [bold]R[/bold]egistered [bold]S[/bold]pecialist [bold]E[/bold]ngineer

 

[maxse]

So they can only be extended via standard UTP cable (4 pair). Does this follow standard Ethernet guidelines 100 meters?

 

[yankblan]

I got this confused. I thought the OP meant the MCK which extended single extension ports through modem/VoIP/Ethernet connections, not the DS30 fiber module extensions.

Not my money of course, but since they have fiber in place, which is the most costly hardware in the whole equation in place already, I'd take the step towards the future/present right now with IP. It's not like the 7316 series is gonna be around much longer. You keep the on site phones digital for now, and replace them with 96xx phones as they die.

ACSS-SME

http://interconnexionsld.ca/

 

[tlpeter]

Yankblan, this is th ebest answer that can be given.
It is the way it is and that means it should be made IP ready.


BAZINGA!

I'm not insane, my mother had me tested!

 

[mattKnight]

So they can only be extended via standard UTP cable (4 pair). Does this follow standard Ethernet guidelines 100 meters?

No, the Avaya supplied lead is screened, even using un-screened 1M cables has been known to cause issues. Using cables of different lengths also causes trouble.


Take Care

Matt
I have always wished that my computer would be as easy to use as my telephone.
My wish has come true. I no longer know how to use my telephone.

 

[Westi]

Using cables of different lengths also causes trouble.

that reminds me of a system I know, let me think if I remember the name of it...... oh I got it IP OFFICE

Joe W.

TeleTechs.ca
FHandw, ACSS (SME), ACIS (SME)


“This is the end of the world, make sure to buy your T-shirt before it is too late"
Original expression of my daughter