atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's HyperEdge Smartjack indicates normal operation with no CPE connected

Hello -
Equip: 8 port HyperEdge NIU, with 66 block demarc

Ran into an interesting problem when trying to extended two T-1s 15 feet to a router. The NIU slots 3/8 and 4/8 had no CPE connected to them. However slot 3/8 indicated normal operation (the PWR and ESF lights were on, no TLOS light). Slot 4/8 showed TLOS red on as expected. I swapped the two cards but the indicators did not change.
I proceeded to punch down my jacks onto the block and connect to the router. As expected on slot 4/8 the TLOS light went out and the circuit worked. The slot 3/8 circuit did not work. The Cisco 2900 router showed there was carrier but also alarm.
AT&T was on the bridge call and they were able to loop port 3/8, the LB light went orange, but they were not able to loop the Cisco DSU.
The previous circuit id that was on 3/8 was XBGQ091768 whereas most of our circuits start with HCGS.
Where are the configurations for a circuit set? Nothing is set in the NIU right?
Any help would be appreciated - thanks
PS - The NIU is connected to an ADC Remote Terminal which had MJ and MN alarms
Thanks

A circuit ID starting with an "X"...to me...indicates a DS0 such as a stand alone 56k or 64k data circuit.

HCGS is Bell Telephone/Bell Atlantic/Verizon designation of a high cap T circuit. A circuit with an X is a handoff circuit and is usually, but not always, a 56K v.37 circuit.

My guess would be Verizon never got out to install the 2nd circuit.

Rcaman

Take a look at the shelf itself and see if anything is plugged into the 3rd 8p8c jack on the NCTE mounting (SJ shelf). Those shelves can be wired out for handoff on a 25 pair block or the internal 8p8c jacks. A lot of the time vendors would just use the jacks instead wiring to the block.

Also, there is a dip switch that will change the handoff from an RJ48C (T1) to RJ48S (DS0). It should be configured as a RJ48C since the ADC Soneplex can only provide T1 service, but it might be worth seeing if you are able to tell how it is set.

This is older building and very likely there were 56K circuit there.

There were not any RJ jacks on this SJ shelf. Since I was going to just use a Cat5 patch cord to connect I was disappointed.
Where is a T-1 configured, not in the SJ right? The circuit just comes already configured to the SJ, and the only thing some SJ can do is LBO adjustments, right? -tnx

Smart jacks also provide an additional test point for remote troubleshooting purposes.

Not to mention, you never know where Verizon will place them! Yep, 2,800 feet of OSP (CAT Zero) cable on the CPE side of this shelf. Eight years of them pointing the finger at us for CPE side failures. There's the proof:

wow..... just wow.

Ed -

That takes laziness to a whole new level.

Unbelievable!

George -

As Dex said, The smart jack allows the provider an additional test point. In actuality, the main reason is the ability to remotely loop the circuit and test it, allowing remote testing - without having to roll a truck...

Sam