| ===== Phrack Magazine presents Phrack 16 ===== | |
| ===== File 2 of 12 ===== | |
| -------------------------------------------------------------------- | |
| 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 =- | |