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- BELLCORE Information by The Mad Phone-man
- --------------------------------------------------------------------
-
- So, You've broken into the big phone box on the wall, and are looking at
- a bunch of tags with numbers and letters on them. Which one is the modem
- line? Which one is the 1-800 WATTS line? Which one is the Alarm Line?
- Bell has a specific set of codes that enable you to identify what you're
- looking at. These are the same codes the installer gets from the wire
- center to enable him to setup the line, test it, and make sure it matches
- the customers order. Here are some extracts from the Bellcore book.
-
- First lets take a Hypothetical Line number I'm familiar with:
- 64FDDV 123456
- -------------------------------------------------------------
- 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
- -------------------------------------------------------------------------
-
- The Important shit is in the 3d thru 6th digit.
-
- 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
-
-
-
- Now the last two positions of real importance, 5 & 6 translate thusly:
-
- 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 64FDDV would be a private line data circut terminating at a radio common
- carrier. Other examples can be decoded likewise.
-
-
-
- Enjoy this information as much as I've had finding it.
-
- -= The Mad Phone-man =-
- _______________________________________________________________________________