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Optimal Solution?

Optimal Solution?

Optimal Solution?

Hey Everyone,

Im new to the phone switch world.  We currently have a main pbx connected via fusion to our other switches around the university.

We recently built a new dorm and had 50 analog lines put in direct from telco.  Now we are considering bringing them onto our phone network.  This building is across the street from the main campus so we would need to get a circuit from sbc im assuming.

Would it be best to go with a single pim imx or even a dru setup??  Please let me know why which solution may be better.  I can use all the knowledge you guys are willing to tell me!!

Thanks in advance.

RE: Optimal Solution?


I would either use a NEAX IPS or a IMX not a DRU. Are you using any CCIS in the network or just Fusion?


RE: Optimal Solution?

Just Fusion from what I know....

Why would you not use a DRU?

RE: Optimal Solution?

iF you want to support analog extensions from a dru be careful it was designed to work over E1 not a t-1
The E-1 would allow you to run 32 Analog phones

For cost sakes i would run Dterms off a DRU . order a point to point t-1 and get 23 Dterms for about 5k for the DRU

You may want to check with your data group , are they providing data to the new site and how.

Depending on what the voice and data needs are it could pay to install some direct fiber.
They do sell units to support t-1s over fiber if you go with a DRU.
Also depending on your software rev on the NEC you could do IP phones

RE: Optimal Solution?

Well it is a dorm for students so we dont want to go with expensive IP phones... we currently have simple analog lines in.

For the data we have a fiber connection which would be nicely utilized if we were going IP

Im guessing my best bet would be to have a t1 point to point and a new imx switch... any one else think so too? or against the idea?

RE: Optimal Solution?

If you are buying a new system for 50 phones and add it to your FCCS network the sales rep will love you.

I am cheap   I would stick with the DRUs; have your vendor figure out the E-1 TO T-1 converters to make them work
Good luck

RE: Optimal Solution?

So the dru's would not be able to be apart of my fusion network?

If i am correct i can put two DRU's both utilizing 2 T-1 connections (provided my sales rep can find the converters).  This will support 64 analog phones?  Will i be able to add digital phones?

RE: Optimal Solution?

Hold on you now say there is fiber connections already?
Yes get fiber to t1 converter and do CCIS to a IVS/2 or IPS which does support analog sets.

RE: Optimal Solution?

Ya i asked the data guys and they have a fiber link going over for the data.

I will have to look into the IVS or IPS im not familiar with either

RE: Optimal Solution?

The IMX would be an expensive solution ( unless you have a spare sitting around). An IPS / 2000 would be ideal for your application and would work seamlessly in the CCIS environment. The DRU solution would require 3 T-1's to get you 50 stations as they only support 23 stations per unit. The E-1 will only work if it is on copper directly connected between switches. I have worked with E-1 to T-1 conversion and it is NOT reliable. Also NEC will not support E-1 in the U.S.



RE: Optimal Solution?

The SPN-30DTC-UA, NEC part number 150106 is supported in the US by NEC. Here is the explaination from the NEAX 2000IPS parts list.....
2M Digital Trunk Interface - Uses 31
Application Time Slots. Max of 120 DTI
Ports w/this Interface. AP Number 4-15
& 20-31 Lower AP Hwy Applications;
2M AMI (30ch) T1, CCIS (30B+C)
requires SPN-SC00 , CCH-D (AP) for
each CCIS Link.

RE: Optimal Solution?

I think we are leaning towards an IMX with the fusion cards.... We already have single and multi mode fiber between the buildings so from what i know we can get a converter to allow the fusion cards to communicate over the fiber... am i correct on this??

RE: Optimal Solution?


RE: Optimal Solution?

There are converters made by NEC MUXFD-6 sold by Walker and associates.
One unit is around 4k
The unit allows you to connect T-1s out of the PBX to fiber
You would a unit at both ends.
It does work with single mode.

You could also connect a t-1 to for data gear have your router do the t-1 conversion.

NEC does have other cards to add t-1s to Sonet / Fiber interface (SPA – SDTA)
There are other products you could use.

Personally I would get your NEC dealer in and get a price on the 2000 vs IPX with FCCS and have them help you design a proper solution

If you are putting out 50 single line phones on an IPX and add FCCS.
The cost for the FCCS cards alone has to be around 10k each, cost of the IPX , a lot of money just to support a dorm

RE: Optimal Solution?

Well we didnt want to go IPX because our vision is to eventually do away with NEC all together.  Hopefully having a cisco branded network for both data and VoIP.

I am no familiar with the 2000... how is this different than the IMX?  a smaller switch i imagine?  how would i integrate this with my existing IMX (main switch)?

And thank you all for the tons of responses... it has been a great help!!!

RE: Optimal Solution?

A 2000 is a smaller yet robust system, I do not know even if you could get an IMX unless it was used.
If you are already planning to go to a Cisco solution First good luck abut second why not do it in this dorm , It would be a great way to get used to the system without compromising your entire campus.
You could tie it to the NEC system to the call manager and your voicemail.

If you are not going to Cisco till later go for the 2000 and connect it using CCIS to the 2400

RE: Optimal Solution?

Not only that use the 2000 and for the money you save have the dealre setup NEC VOIP off the 2000 this is a very good solution.

RE: Optimal Solution?

Just looked into the 2000 IPS.

That definately looks like it will be a better solution than the IMX.  I can still connect this to my main IMX?  We have single mode fiber going to the building so if we could utilize that it would be great.

Now we could use traditional lines and test out our VoIP with a small group... That would be a perfect setup... i am correct in my thinking right?

RE: Optimal Solution?

You are very correct, In the IPS you can use a M10 card which is a Fiber to T1 tranceiver The single card can support two T1 cards.

Now as you said Traditional Lines for useres and implement a VOIP solution off a smaller switch for eval. I'm sure with proper network setup you will love it!


RE: Optimal Solution?

Any idea on how much the 2000 IPS will cost with the cards need to connect it to my existing IMX and support 50 analog phones over tdm?

Also what cards would i need to test about 10 ip phones off of the 2000?

RE: Optimal Solution?


RE: Optimal Solution?

No prices here, see a local dealer for help.

RE: Optimal Solution?

no estimates?

and does anyone have any ide on the cards i asked about last?

RE: Optimal Solution?

CP24-B MP card used for DRS
PAD card either 8IPLA or 32IPLA
If you use the 8IPLA then you would not need another card for Codec selection G7.29

For the TDM side you need...
7 - 8 port Anaolg cards 8LCAA
1 - 8RST Analog register card
2 PIM's Cabinets one for TDM and one for VOIP

RE: Optimal Solution?

There arent any 16 port cards in this unit?

What are those first three cards you listed? used for ip? or are they to hook me up to my other imx?

RE: Optimal Solution?

No 16 port cards they are 8 port slots only. (Smaller PBX)

They are VOIP cards

The cards to connect to the IMX are a 24CCTA card. thats on the 2000 side. Not sure whats needed on the IMX.

RE: Optimal Solution?

Thanks Mextera... once again you have managed to help me out greatly. I appreciate it.

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