atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's DS3?

FYI info for ya…

NCTE= Network Channel Terminating Equipment (commonly call a SmartJack whether it is or not) generally speaking, is not used for anything on the CPE side of the demarc…. Meaning it will have no effect on your install of CPE equipment one way or another.


Speaking as a Telco circuit engineer those SmartJacks are placed (or sometimes not placed) at the customer premise for several reasons.
* Remote Maintenance: NCTE’s are loopable devices that can be used to trouble shoot circuit trouble without rolling a truck.
* Signal Enhancement: As the length of cooper loops get longer, sometimes condition is required.
* Hybrid Devices: Many 4-wire (full duplex) digital services can be delivered via ONE PAIR of wires due to these SmartJacks... The terminating devices can convert the signal back over to 4-wire at the demarc. Thus saving a pair for the local provider.

So technically speaking the T3 MUX is not really conditioning the signal for you… Having the MUX there on-site is much more like moving the C.O. really, really close to you where conditioning and/or copper pair conservation is not a necessity.

So moral of the story is… Don’t get hung up not going forward with an install just ‘case there’s no NCTE (SmartJack.)

Thanks,
Bryan

Sprint brought in fiber off the SONET Ring to the MPOE to the DS3 MUX and broke it back out via copper to their protector terminal for DMARC.

So, what you are saying Bryan is that because this is fiber to the MUX which is at the customer premises there is no need for NCTE to condition any copper?

-Hal

Yes sir… that would be what I was gettin' at… With much fewer of them pesky words! :rolleyes: (I get a little too wordy sometimes!)

The MUX would also be able to do monitoring on the 28 T1’s riding on it.

Subject: T3 vs. DS3 terminology

I also meant to mention this on my earlier post to maybe help some of the earlier terminology confusion. More gee whiz info if anybody wants it.

DS3 refers to the digital rate of 44.736 Mb/s as well as signal format (non-SONET or ATM.)

T3 would be the non-SONET carrier system for a DS3 signal.

Both terms can get used interchangeable at times.


Thanks,

Cars –n- Guitars Racin’
Bryan

Thanks Bryan for your input and info as this was a new experience for me the whole trip. Until yesterday I was unaware of the option of engineering with or without a Smart Jack and couldn't understand the concept of not conditioning the copper from the terminal block. I honestly thought Sprint had an anal implant and that I was in for a wonderful time ahead of me.