sundance-communications.com/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's Can you figure out these abbreviation?

Trying to figure out what two entries in my phone record mean:

FIRST:
10/09/12 18:53 ET - NPC 699 GETTING FAIL/CGA, OOF, ES,CRC'S

SECOND:
10/09/12 18:54 ET - M 18:02:02 01,00 3 UTL QRY STATE NPC 0699TYPEOOS FAIL PEST CGA OOF SLIP ER ES SES0 1 - R 008 000 CL 00020 000THRESHOLDS 255 004 3 6COMPL³DC103 IW 7F 04 LN MSG:COFA CRC6 BPV FRER--- 01518 00000 -----

Care to mention what kind of system you are using and what type of report this is? A little bit of information goes a long way.

The only thing that I see that makes any sense to me is "OOF", which in my world means 'out of frame'.

At a guess:

OOS - Out Of Service
CRC - Cyclic Redundancy Check
UTL - Utility
QRY - query
MSG - Message
CL - clock or clocking

Is this an ISDN Trace?

BPV is bi-polar violations. Looks like one of your T-1s was having problems.

What system is this running on?
What kind of Carrier trunks do you have?
Where do they connect to?

Inquiring minds want to know.....

Sam

Looks like a printout from some type of network element. Maybe a DACS or mux. If memory serves me correctly the NPC is the card designation that the circuit is terminated on. It looks like the circuit has failed and has generated a carrier group alarm. The circuit is showing OOF, excessive errored seconds, & Cyclic Redundancy Check problems.

Looks like the second is a response to either a manual or automatic query on the circuit NPC 0699. The query is providing details on the status of the circuit. I’m doing this from memory & it’s been a while.

Since I was a small child, I have always been fascinated by the telephone system. I can remember hanging out and begging for a tour of our town's #5 Crossbar system. Having said that, this is kinda over my head.

I have a telephone number (line?) from another state in my house. I have been told that this is a "foreign line exchange circuit" or DS0 circuit (Digital Signal Zero), whatever that means.

The line went down, and those codes were in my repair record after I reported it. Of course, I was curious what they meant.

CGA - Carrier Group Alarm
SES - Severely Errored Seconds
ES - Errored Seconds

As others have suggested, the T1 circuit was dropping/bouncing.

I am moving this topic to the T1 forum.

Topic moved here from the General forum.

A DS-1 circuit is a T-1. A DS-0 circuit is one channel on a T-1, or essentially a standard Telephone Line, being delivered over a T-1 (and probably broken out on a channel bank).

Sam

Thanks for all the insight. With this info and some Google research, let me see if I have this right:

I have a District of Columbia telephone number which rings in Virginia. My outgoing calls also appear to be originating from DC to anyone I call (caller-id).

From what y'all have said, it appears that a dedicated T1 line goes from the central office where the DC exchange is to my local central office here in Virginia.

At the local office, the T1 is divided and one channel is connected to my telephone.

The rest of the T1 bandwidth can be sold to or used by others.

Dumbed down to layperson understanding (that's me), is this the general idea?