| ===== Phrack Magazine presents Phrack 16 ===== |
| ===== File 2 of 12 ===== |
|
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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 WATS 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 set up 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 circuit number + segment |
| digits: 13,14,15 16,17,18,19 20,21,22 |
| ------------------------------------------------------------------------- |
|
|
| The important shit is in the 3rd 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 facilities |
| 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 extension |
| 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 access |
| 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 access 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-telegraph 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 circuit |
| QU- Packet asynchronous access line |
| QS- Packet synchronous access line |
| RA- Remote attendant |
| RT- Radio landline |
| SA- Satellite 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 circuits |
| ZC- Call and talk circuits |
| ZE- Emergency patching circuits |
| ZF- Order circuits, facility |
| ZM- Measurement and recording circuits |
| ZP- Test circuit, plant service center |
| ZQ- Quality and management circuits |
| ZS- Switching, control and transfer circuits |
| ZT- Test circuits, central office |
| ZV- Order circuits, 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- Metallic customized |
| NQ- Telegraph customized |
| NT- Protection alarm-metallic |
| 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- Dedicated digital 56. kb/s |
|
|
|
|
|
|
| Now the last two positions of real importance, 5 & 6 translate thusly: |
|
|
| Modifier Character Position 5 |
| ------------------------------ |
|
|
| INTRASTATE 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 Simultaneous 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 GOVERNMENT |
| -------------------------------------- |
| T M Circuit is BOC customer to BOC customer |
| all facilities are TELCO provided |
| -------------------------------------- |
| C P Circuit is BOC/BOC and part of |
| facilities or equipment is telco |
| provided |
| -------------------------------------- |
| A J Circuit is BOC/BOC all electrically |
| connected equip is customer provided |
| -------------------------------------- |
| L F Circuit terminates at interexchange |
| carrier customers location |
| -------------------------------------- |
| Z Official company service |
| -------------------------------------- |
| Interlata |
| S S Circuit terminates at interexchange |
| carriers point of term (POT) |
| -------------------------------------- |
| V V Circuit terminates at an interface of a |
| radio common carrier (RCC) |
| -------------------------------------- |
| Z Official company service |
| -------------------------------------- |
|
|
| Corridor |
| Y X Corridor circuit |
| -------------------------------------- |
| International |
| K H Circuit has at least 2 terminations in |
| different countries |
| -------------------------------------- |
| Interexchange carrier |
| Y X Transport circuit between interexchange |
| carrier terminals. |
| ---------------------------------------- |
|
|
| So 64FDDV would be a private line data circuit terminating at a radiocommon |
| carrier. Other examples can be decoded likewise. |
|
|
| Enjoy this information as much as I've had finding it. |
|
|
| -= The Mad Phone-man =- |
|
|
