atcomsystems.ca/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's Circuit Codes on Demark

I am trying to identify circuit ID's at a client. Is there a reference that can help me identify the carrier and purpose from a circuit ID. Verizon is the local LEC delivering all loops in this area.

For instance:
95HCGS123456
95HCFU123456
BOHCGS123456

Thanks for the help.

Steve

I know by heart that if it starts with DHEC, DREC, AREC it's AT&T...

Level 3 circuit numbers normally don't have letters, only digits...

Not aware of a reference...

Steve, all three are local id's. Meaning they belong to whoever the local carrier is. Doesn't mean there isn't a long haul id with it and just not posted. First two number identify the LEC the HCGS means it's a t-1 the number are the circuit number.

I believe HCFU's are T1's as well.

Could be Kyle, all I could find on that was "unbundled transport" This post would probably fit better in the transport services category and one of our CO techs may be able to help. I have no idea what the BO in the last id is.

If memory serves me, HCGS is a LEC local T1 ckt.

That's correct Anthony. Although the 4 letters identify the "type" of circuit, they are actually used for identifying the DS rate looping capability of the circuit. Here are some of the other standard codes from one of my cheat sheets:

LXFU--- Analog type loops, Voice Grade, Non-Loaded ADSL Compatible Loops
HCFU--- DS1 Capable Loop [T1]
HFFU--- DS3 Capable Loop [T3 / 28 T1s]
UBXU--- ISDN BRI Capable Loop
OBFU--- OC3 Capable Loop
ODFU--- OC12 Capable Loop
OFFU--- OC48 Capable Loop
OGFU--- OC192 Capable Loop
AGFU--- xDSL-I Capable Loop

UBXU service code replaces UBCU.
UBCU is a grandfathered code for ISDN BRI Capable Loop.

To add to Mike's very awesome list here are a few I know of.

Specifically, HCFU are "wholesale" circuits typically sold to CLECs. (My guess is many of the circuits that end in "FU" (Hahaha!) are "wholesale" related. Most are referred to unbundled network elements or "UNE" (YouNEE) T1s.

HCGS circuits are "Special Access" circuits that are "hybrids". For example: If there are facilities to a CO for wholesale but that CO doesn't have enough last mile facilities for wholesale, they will deliver a "special access" circuit as the last mile.

HCGA and DHZA in the NJ region is an all retail T1 circuit. The kind anyone would get if they called Verizon directly and said they wanted a T1 at their house or business.

QGDQ/YBGQ are usually T1 Frame or ATM circuits.

HFGJ are usually FRAME or ATM DS3s.

Not sure what area you are in Mike but ISDN circuits here in the NJ area are IBZD.

Should I also go into trouble ticket naming conventions at Verizon in the Northeast?

ML is a ticket being worked out of the "Mount Laurel" trouble center.

IC tickets are "Inter Carrier" also known as the "CATC".

Most wholesale/UNE T1s get a "RS" ticket that's opened with the "Regional CLEC Maintenance Center" or "RCMC".

Fun Fun Fun!

Fred

Prefix /Service Code +Modifier/ Serial Number // Suffix / Segment Name
1 2 “ 3 4” “5 6” 7 8 9 10 11 12 13 14 “xx” (multi point only)

Prefix 2 alpha numeric characters: ID’d the market area (sometimes tied to LATA number)
Service Code: Two Alpha characters the designate the service
Modifier: modifies the service code. (often billing and tariff information)
Serial Number: Unique numeric number to identify the circuit.
Suffix: Alpha code that will ID the Telco in control.
Segment name: Alpha designation of the leg of a multipoint circuit.

The service code will be the characters that will tell you what type of circuit it is. Keep in mind also that there are service codes for Access Circuits (cross-LATA) and non-Access Circuits (same LATA.) So one ya’ll may say, “A DH is a Hi-Cap T1 and another may say, “I thought HC was a Hi-Cap T1.” Both would be correct. DH for same LATA HC for cross-LATA.

This is NOT a complete list of all service codes… Believe it or no there is a bunch more. And you will see at times that there are regional and/or company variations in the meaning of a few codes:

But here ya’ll go…. ENJOY!


Code / Access or non / Service Code Description
AC Access Asymmetrical Digital Subscriber Line (ADSL)
AG Non Digital Subscriber Line (DSL) – Convertible Subscriber Rates
AH Access High Bit Rate Digital Subscriber Line (HDSL)
AI Non Automatic Identified Outward Dialing
AQ Non High Bit Rate Digital Subscriber Line (HDSL)
AR Non Asymmetrical Digital Subscriber Line (ADSL)
AS Non ATM Circuit
BB Non Digital Data - 3 Mbps
BC Non Digital Data - 4.5 Mbps
BD Non Digital Data - 6 Mbps
BE Non Digital Data - 7.5 Mbps
BG Non Digital Data - 9.0 Mbps
BH Non Digital Data - 10.5 Mbps
BI Non Digital Data - 12.0 Mbps
BJ Non DIGITAL DATA - 15 MB/S
BK Non DIGITAL DATA - 18 MB/S
BL Non Bell and Lights
BM Non DIGITAL DATA - 21 MB/S
BN Non DIGITAL DATA - 24 MB/S
BP Non DIGITAL DATA - 27 MB/S
BQ Non DIGITAL DATA - 30 MB/S
BR Non DIGITAL DATA - 33 MB/S
BS Non Siren Control
BT DIGITAL DATA - 36 MB/S
BU Non Digital Data – 4.0 Mbps
BV Non Digital Data – 10.0 Mbps
BW Non Digital Data - 22.0 Mbps
CA Non SST Access
CE Non SST Station Line
CL Non CENTREX CO Line
CN Non SST Network Trunk
D1 Non Digital Data-1536 Kbps
D2 Non Digital Data-1600 Kbps
D3 Non Digital Data-1664 Kbps
D4 Non Digital Data-1728 Kbps
D5 Non Digital Data-1792 Kbps
D6 Non Digital Data-1856 Kbps
D7 Non Digital Data-1920 Kbps
D8 Non Digital Data-1984 Kbps
DC Non Digital Data 64Kbps
DD Non Direct Dial - Alternate Design
DH Non Digital Service – 1.544Mbps
DI Non Direct-in-Dial
DK Non Data Link
DM Non Digital Data - 19.2 Kbps
DN Non Direct-Out-Dial- Alternate Design
DO Non Direct- Out-Dial
DP Non Digital Data - 2.4 Kbps
DQ Non Digital Data - 4.8 Kbps
DR Non Digital Data - 9.6 Kbps
DV Non 16 Kbps on the ’D’ Channel
DW Non Digital Data - 56 Kbps
DX Non Digital Data - 48 Kbps
DY Non Digital Service (UNDER 1 Mbps)
DZ Non 64 Kbps on the ’D’ Channel
EA Non Switched Access
EB Non Electronic Business Service
ED Access Digital High Capacity, 34.368 Mbps (E3)
EH Access Digital High Capacity, 139.264 Mbps (E4)
EI Non E911 Tandem Interconnection
EJ Access Digital High Capacity, 2.048 Mbps (E1)
EK Access Digital High Capacity, 8.448 Mbps (E2)
EL Non Emergency Reporting Line
EM Non Emergency Reporting Center Trunk
EP Non Emergency Private-Switch Trunk - 911
EQ Non Equipment-only (Network Element) Assignment
EV Non Enhanced Emergency Reporting Trunk
EX Access Fractional E1
FB Non Frame Relay - 192 Kbps
FC Non Frame Relay - 320 Kbps
FD Non Private Line- Data
FD Non Private Line- Data
FE Non Frame Relay - 448 Kbps
FF Non Frame Relay - 576 Kbps
FH Non Frame Relay - 704 Kbps
FJ Non Frame Relay - 832 Kbps
FK Non Frame Relay - 960 Kbps
FL Non Fractional T-1
FM Non Frame Relay - 1024 Kbps
FN Non Frame Relay - 1088 Kbps
FO Non Frame Relay - 1152 Kbps
FP Non Frame Relay - 1216 Kbps
FQ Non Frame Relay - 1280 Kbps
FR Non Fire Dispatch
FS Non Foreign Exchange Trunk - Alternate Design
FT Non Foreign Exchange Trunk
FU Non Frame Relay - 1344 Kbps
FV Non Voice Grade Facility
FW Non Wideband Channel
FX Non Foreign Exchange Line
FY Non Frame Relay - 1408 Kbps
FZ Non Frame Relay - 1472 Kbps
GA Non Digital Data - 128 Kbps
GB Non Digital Data - 192 Kbps
GC Non Digital Data - 256 Kbps
GD Non Digital Data - 320 Kbps
GE Non Digital Data - 384 Kbps
GF Non Digital Data - 448 Kbps
GG Non Digital Data - 512 Kbps
GH Non Digital Data - 576 Kbps
GI Non Digital Data - 640 Kbps
GJ Non Digital Data - 704 Kbps
GK Non Digital Data - 768 Kbps
GL Non Digital Data - 832 Kbps
GM Non Digital Data - 896 Kbps
GN Non Digital Data - 960 Kbps
GO Non Digital Data - 1024 Kbps
GP Non Digital Data - 1088 Kbps
GQ Non Digital Data - 1152 Kbps
GR Non Digital Data - 1216 Kbps
GS Non Digital Data 1280 Kbps
GT Non Digital Data - 1344 Kbps
GU Non Digital Data - 1408 Kbps
GV Non Digital Data - 1472 Kbps
GW Non Fractional T3
GX Non Fractional E1
GY Non Digital Data - 16Kbps
GZ Non Digital Data - 32 Kbps
H2 Non Digital High Capacity - 8.448Mb/s (E2 signal).
H3 Non Digital High Capacity - 34.368Mb/s (E3 signal).
H4 Non Digital High Capacity - 139.264Mb/s (E4 signal).
HA Non Non-DDS Digital Data, 1.2 Kbps
HB Non Non-DDS Digital Data - 19.2 Kbps
HC Access Digital High Capacity, 1.544 Mbps (DS1)
HD Access Digital High Capacity, 3.152 Mbps (DS1C)
HE Access Digital High Capacity, 6.312 Mbps (DS2)
HF Access Digital High Capacity, 44.736 Mbps (DS3)
HG Access Digital High Capacity, 274.176 Mbps (DS4)
HH Access Digital Service-Greater Than 44.736 Mbps.
HI Non Digital Service - 44.736 Mbps
HK Non Timing Signal - 1.544 Mbps
HM Non Digital Service (Various Speeds)
HN Non Digital Voice Circuit
HP Non Non-DDS Digital Data - 2.4 Kbps
HQ Non Non-DDS Digital Data - 4.8 Kbps
HR Non Non-DDS Digital Data 9.6 Kbps
HS Access High Capacity, Sub-Rate
HT Access LAN Service, non-Ethernet
HU Non Digital Service, 2.048 Mbps
HW Non Non-DDS Digital Data - 56 Kbps
HX Access Fractional T-1
HY Non Non-DDS Digital Data - 64 Kbps
HZ Non Private Line Service - 200 Mbps
IA Access ISDN Basic Rate Access Line (Note C)
IB Non ISDN Basic Access Line
IP Non ISDN Primary Access Line
IS Non Internet Protocol (IP) Secure Network Tunnel Service
IT Non Inter Tandem Tie Trunk
JE Access Digital High Capacity, SONET – VT1 Signal
JI Access Digital High Capacity, SONET – STS1 Signal
JJ Access Digital High Capacity, SONET - STS3 Signal
JK Access SONET, STS12 Or STS12c Signal
KC Access Local Area Data Channel
LA Non Local AREA Data Channel (LADC)
LB Access Voice - Non Switched Line
LC Access Voice Switched Line
LD Access Voice Switched Trunk
LE Access Voice And Tone - Radio Land Line
LF Access Data - Low Speed
LG Access Basic Data And Voice
LH Access Voice & Data PSN Access, Tie Trunk
LJ Access Voice & Data SST Access
LK Access Voice & Data-SST Access, Intermediate Trunk
LL Non Long Distance Terminal Line
LM Non LAN Service
LN Access Data Extension, Voice Grade Data Facility
LO Non Ethernet Connection Operating at 10 Mbps
LP Access Telephoto And Facsimile.
LQ Access Voice Grade Customized
LR Access Protective Relay-Voice Grade
LS Non Local Service
LT Non Long Distance Terminal Trunk
LX Access Dedicated facility without equipment (Dark fiber, or copper loops).
LY Access Dedicated Facility - With Equipment
LZ Non Ethernet Connection Operating at 10 Gbps
MD Non SONET - STS1 Signal
ME Non SONET-STS3 Signal
MF Non SONET - OC1 Signal
MG Non SONET - OC3 Signal
MH Non SONET - OC12 Signal
MI Non SONET - OC24 Signal
MJ Non SONET - OC48 Signal
MK Non SONET - OC192 Signal
MM Non SONET - VT1 Signal
MN Non Optical Data Transport Service
MO Non SONET – Flexible Rate
MP Non SONET - STS12 Signal
MS SONET - OC768 signal
MT Non Wired Music
ND Non Network Data Link
NT Access Protective Alarm-Metallic
NY Access Telegraph Grade Facility - 150 Baud
OA Access Digital High Capacity, SONET - OC1 Signal
OB Access Digital High Capacity, SONET – OC3 Signal
OD Access Digital High Capacity, SONET - OC12 Signal
OE Access Digital High Capacity, SONET - OC24 Signal
OF Access Digital High Capacity, SONET – OC48 Signal
OG Access Digital High Capacity, SONET - OC192 Signal
OH Access SONET - OC768 signal
OI Non Off Premises Intercommunications Station Line
ON Non Off Network Access Line
OP Non Off Premises Extension
OS Non Off-Premises PBX Station Line
OZ Access Optical Data Transport Circuit
PA Non Protective Alarm (AC Interface at Customer Premises)
PB Access Program Audio, 300-2500 Hz, Non Equalized
PC Non Switched Digital Access Line
PE Access Program Audio, 200-3500 Hz
PF Access Program Audio, 100-5000 Hz
PG Non Paging
PJ Access Program Audio, 50-8000 Hz
PK Access Program Audio, 50-15,000 Hz
PL Non Private Line - Voice
PN Access Program Audio - 20 Hz To 20,000 Hz
PQ Access Program Grade Customized
PR Non Protective RELAYING Voice-Grade
PX Non PBX Station Line
QA Non SMDS - DS1 Circuit
QB Non Frame Relay - 512 KB
QC Non SMDS - DS3 Circuit
QD Non Packet DDS Access Line
QE Non Frame Relay - 56 Kbps
QG Non Frame Relay - 1.544 Mbps
QH Non Frame Relay – End-to-End Service
QI Non Frame Relay - 44.736 Mbps
QJ Non Frame Relay - 384 Kbps
QK Non Frame Relay - 64 Kbps
QL Non Frame Relay - 128 Kbps
QR Non Frame Relay - 256 Kbps
QS Non Packet-SYNCHRONOUS Access Line
QU Non PACKET-ASYNCHRONOUS ACCESS LINE
QW Non Frame Relay - 640 Kbps
QY Non Frame Relay - 768 Kbps
QZ Non Frame Relay - 896 Kbps
RT Non Radio Land Line
SB Access Voice - Standard
SD Access Voice - Improved
SE Access WATS Access Line Service - Standard
SF Access WATS Access Line Service - Improved
SI Access Switched Access DS0 Service (Note C).
SJ Access Limited Switch Access Line (LSAL)
SL Non Secretarial Line
SP Access PSTN Switched Service
SS Non Data PHONE (R) Select-A-Station
ST Non Digital Trunk
SX Access Port - Line Side Switch Termination
SY Access 1.544 Mbps Timing Signal
TA Non TANDEM TIE Trunk
TB Access 19.39 Mbps Video Channel Mpeg
TC Non Control/Remote Metering Telegraph GRADE
TD Access Component Serial Digital Video-Uncompressed (I.E. 270 Mbps)
TE Access Component Serial Digital Video-Compressed (Requires A
TG Non Central Office - Trunk-Side Termination
TH Non Central Office - Trunk-Side Termination
TI Non Central Office - Trunk Side Termination – Alternate Design
TJ Non Local PBX Trunk - Alternate Design
TK Non Local PBX Trunk
TL Non Non-Tandem TIE Trunk
TP Access Broadcast Television - Pal
TQ Access Television Grade Customized
TS Access Video - TV5
TT Non Teletypewriter Channel
TV Access Television Channel, Video And Optional Audio
TX Non Dedicated Facility-Without Equipment
TY Non Dedicated Facility-With Equipment
TZ Access Non-Commercial Television
UA Access Line Sharing Circuit
UB Non Basic RATE ISDN
UC Non Voice Line
UD Non Voice Trunk
UE Non Audio Program (Non BROADCAST)
UF Non Fractional T-1 (RPL)
UG Non Analog Data
UH Non Digital High Capacity
UN Non Low Speed Signaling Custom
UP Non Audio Program Custom (Non Broadcast)
UQ Non Voice Grade Customized
UR Non LINE SPLITTING SERVICE
UR Access Line Splitting Service.
US Non Digital Data
UX Non Digital Data Custom
UY Non Low Speed Signaling
UZ Non Basic Voice
VC Access CATV (Cable Television) Transport Service
VF Non Commercial Television (Full-Time)
VH Non Commercial Television (Part-Time)
VM Non Control/Remote Metering Voice-Grade
VR Non Non-Commercial Television
VS Non Video Service
VV Component Serial Digital Video-Uncompressed (i.e. 270 Mbps)
VW Non Video Service - 384 Kbps
VY Non Video Service - 1.544 Mbps
WA Access Wideband Analog
WC Non Wavelength Channel
WD Access Wideband Digital, Cellular, 824 - 894 MHz
WI Non WATS Service Trunk
WO Non WATS Line (OUT)
WS Non WATS Trunk (OUT)
WX Non WATS Service Line
WY Non WATS Trunk, 2-WAY
WZ Non WATS Line, 2-WAY
XA Access Dedicated Digital, 2.4 Kb/S
XB Access Dedicated Digital, 4.8 Kb/S
XC Access Dedicated Digital, 19.2 Kb/S
XD Access Dedicated Digital, 64 K/Bps
XF Access Dedicated Digital Data, 38.4 Kb/S
XG Access Dedicated Digital, 9.6 Kb/S
XH Access Dedicated Digital, 56 Kb/S
XI Access Dedicated Digital, 16 Kb/S
XJ Access Dedicated Digital Data, 32 Kb/S
XL Non TWX Access Line
XR Access Dedicated Digital, Variable Bit Rate
XZ Non Digital Data 64 CCC - OVERFLOW Service CODE
YB Access Frame Relay, 1.544 Mbps
YG Access Frame Relay, Less Than 1.544 Mbps
YH Access Fractional T3 Or Multiple Ds1 Services, One By One.
YI Access Frame Relay - 44.736 Mbps
YN Access Digital Transmission
ZA Non Alarm Circuits