Bellcore Line Designators ------------------------------------------------------------- The serial number format: Prefix + service code + modifier + serial number + digits: 1,2 3,4 5,6 7,8,9,10,11,12 continued ------------------------------------------------------------------------- Suffix + CO assigning circut number + segmet digits: 13,14,15 16,17,18,19 20,21,22 ------------------------------------------------------------------------- SERVICE CODES Intra or Inter LATA Block 1-26 ----------------- AA- Packet Analog Access line AB- Packet switch trunk AD- Attendant AF- Commercial audio fulltime AI- Automatic Identified outward dialing AL- Alternate services AM- Packet, off-network access line AN- Announcement service AO- International/overseas audio (full time) AP- Commercial audio (part time) AT- International/overseas audio (part time) AU- Autoscript BA- Protective alarm (CD) BL- Bell & Lights BS- Siren control CA- SSN Access CB- OCC Audio facilitys CC- OCC Digital facility-medium speed CE- SSN Station Line CF- OCC Special facility CG- OCC Telegraph facility CH- OCC Digital facility High-speed CI- Concentrator Identifier trunk CJ- OCC Control facility CK- OCC Overseas connecting facility wide-band CL- Centrex CO line CM- OCC Video facility CN- SSN Network trunk CO- OCC Overseas connecting facility CP- Concentrator identifier signaling link CR- OCC Backup facility CS- Channel service CT- SSN Tie trunk CV- OCC Voice grade facility CW- OCC Wire pair facility CZ- OCC Access facility DA- Digital data off-net extention DB- HSSDS 1.5 mb/s access line DF- HSSDS 1.5 mb/s hub to hub DG- HSSDS 1.5 mb/s hub to earth station DH- Digital service DI- Direct-in dial DJ- Digit trunk DK- Data Link DL- Dictation line DO- Direct-out dial DP- Digital data-2 4 kb/s DQ- Digital data-4 8 kb/s DR- Digital data-9.6 kb/s DW- Digital data-56 kb/s DY- Digital service (under 1 mb/s) EA- Switched acess EB- ENFIA II end office trunk EC- ENFIA II tandem trunk EE- Combined access EF- Entrance facility-voice grade EG- Type #2 Telegraph EL- Emergency reporting line EM- Emergency reporting center trunk EN- Exchange network acess facility EP- Entrance facility-program grade EQ- Equipment only-(network only) assignment ES- Extension service-voice grade ET- Entrance facility-telegraph grade EU- Extension service-telegrasph grade EV- Enhanced Emergency reporting trunk EW- Off network MTS/WATS equivalent service FD- Private line-data FG- Group-supergroup spectrum FR- Fire dispatch FT- Foreign exchange trunk FW- Wideband channel FV- Voice grade facility FX- Foreign exchange HP- Non-DDS Digital data 2.4 kb/s HQ- Non-DDS Digital data 4.8 kb/s HR- Non-DDs Digital data 9.6 kb/s HW- Non-DDS Digital data 56 kb/s IT- Intertandem tie trunk LA- Local area data channel LL- Long distance terminal line LS- Local service LT- Long distance terminal trunk MA- Cellular access trunk 2-way MT- Wired music NA- CSACC Link (EPSCS) NC- CNCC link (EPSCS) ND- Network data line OI- Off premises intercommunication station line ON- Off network access line OP- Off premises extension OS- Off premises PBX station line PA- Protective alarm (AC) PC- Switched digital-access line PG- paging PL- Private line-voice PM- Protective monitoring PR- Protective relaying-voice grade PS- MSC constructed spare facility PV- Protective relaying-telegraph grade PW- Protective relaying-signal grade PX- PBX station line PZ- MSC constructed circut QU- Packet asyncronous access line QS- Packet synchronous access line RA- Remote attendant RT- Radio landline SA- sattelite trunk SG- control/remote metering signal grade SL- secretarial line SM- sampling SN- Special access termination SQ- equipment only-customer premises SS- dataphone select-a-station TA- Tandem tie-trunk TC- Control/remote metering-telegraph grade TF- Telephoto/facsimile TK- Local PBX trunk TL- Non-tandem tie trunk TR- turret or automatic call distributor (ACD) trunk TT- Teletypewriter channel TU- Turret or automatic call distributor (ACD) line TX- Dedicated facility VF- Commercial television (full time) VH- Commercial television (part time) VM- Control/remote metering-voice grade VO- International overseas television VR- Non-commercial Television (7003,7004) WC- Special 800 surface trunk WD- Special WATS trunk (OUT) WI- 800 surface trunk WO- WATS line (OUT) WS- WATS trunk (OUT) WX- 800 service line WY- WATS trunk (2-way) WZ- WATS line (2-way) ZA- Alarm circuts ZC- Call and talk circuts ZE- Emergency patching circuts ZF- Order circuts, facility ZM- Measurement and recording circuts ZP- Test circut, Plant service center ZQ- Quality and management circuts ZS- Switching, control and transfer circuts ZT- Test circuts, central office ZV- Order circuts, service SERVICE CODES FOR LATA ACCESS --------------------------------------------------- HC- High capacity 1.544 mb/ps HD- High capacity 3.152 mb/ps HE- High capacity 6.312 mb/ps HF- High capacity 6.312 HG- High capacity 274.176 mb/s HS- High capacity subrate LB- Voice-non switched line LC- Voice-switched line LD- Voice Switched trunk LE- Voice and tone-radio landline LF- Data low-speed LG- Basic data LH- Voice and data-PSN access trunk LJ- Voice and data SSN access LK- Voice and data-SSN-intermachine trunk LN- Data extension, voice grade data facility LP- Telephoto/facsimile LQ- Voice grade customized LR- Protection relay-voice grade LZ- dedicated facility MQ- Metalic customized NQ- Telegraph customized NT- Protection alarm-metalic NU- Protection alarm NV- Protective relaying/telegraph grade NW- Telegraph grade facility-75 baud NY- Telegraph grade facility- 150 baud PE- Program audio, 200-3500 hz PF- Program audio, 100-5000 hz PJ- Program audio, 50-8000 hz PK- Program audio, 50-15000 hz PQ- Program grade customized SB- Switched access-standard SD- Switched access-improved SE- Special access WATS-access-std SF- Special access- WATS access line improved SJ- Limited switched access line TQ- Television grade customized TV- TV Channel one way 15khz audio TW- TV Channel one way 5khz audio WB- Wideband digital, 19.2 kb/s WE- Wideband digital, 50 kb/s WF- Wideband digital, 230.4 kb/s WH- Wideband digital, 56 kb/s WJ- Wideband analog, 60-108 khz WL- Wideband analog 312-552 khz WN- Wideband analog 10hz-20 khz WP- Wideband analog, 29-44 khz WR- Wideband analog 564-3064 khz XA- Dedicated digital, 2.4 kb/s XB- Dedicated digital, 4.8 kb/s XG- Dedicated digital, 9.6 kb/s XH- Dedecated digital 56. kb/s Modifier Character Position 5 ------------------------------ INTRASTARE INTERSTATE ------------------------------------- A B Alternate data & non data ------------------------------------- C Customer controlled Service ------------------------------------- D E Data ------------------------------------- N L Non-data operation ------------------------------------- P Only offered under intra Restructured private line (RPL) tariff ------------------------------------- S T Simultanious data & non-data ------------------------------------- F Interexchange Carriers is less than 50% ------------------------------------- G Interstate carrier is more than 50% usage MODIFIER CHARACTER POSITION 6 -------------------------------------------------------------- TYPE OF SERVICE Intra LATA -------------------------------------- ALL EXCEPT US GOVT US GOVERNMT -------------------------------------- T M Circut is BOC customer to BOC customer all facilitys are TELCO provided -------------------------------------- C P Circut is BOC/BOC and part of facilitys or equipment is telco provided -------------------------------------- A J Circut is BOC/BOC all electricaly connected equip is customer provided -------------------------------------- L F Circut terminates at Interexchange carrier customers location -------------------------------------- Z Offical company service -------------------------------------- Interlata S S Circut terminates at Interexchange carriers point of term (POT) -------------------------------------- V V Circut terminates at an interface of a Radio common carrier (RCC) -------------------------------------- Z Official company service -------------------------------------- Corridor Y X Corridor circut -------------------------------------- International K H Circut has at least 2 terminations in different countries -------------------------------------- interexchange carrier Y X Transport circut between Interexchange carrier terminals. ---------------------------------------- So 71FDDA would be a local private line data circut with CPE.