BT decided to use Krone made Insulation Displacement Connections IDC on all their terminations in the field. It was because of BT's buying power and the fact that BT commanded a such a presence in the business that other British companies adopted Krone as standard equipment.
LIST OF IDC PARTS USED BY BT
Strip Connexion No 237A 10 pair test and disconnect
" " 237C 10 pair has no disconnect
" " 237E 20 wire earth common, red
" " 238A |
" " 239A | Low profile 3 + 4 way
" " 241A |
" " 242A | Low profile 10 + 20 for under floor boxes
Cords Connexion D99469 2 wire test cord - for box 200
" " D99471 4 " test cord - std strip 237A
" " D99473 4 wire patching cord
Protector Mounting No 5B 10 way mntg - Protectors 14A on strips con 237
Strip Designation No 51A Label holder for SC 237
" " No 53A Label holder for fitting onto SC frame mounting - small (15mm deep)
" " No 54A Label holder for fitting onto SC frame mounting - large (22mm deep)
" " No 56A Label and holder - 10 pair
Wedges Locking No 23A 1 pair disconnect wedge
" " No 24A Red wedge for priority circuits (does not DIS)
" " No 25A 10 pair disconnect wedge
Frames Mounting 5/20/8A Used in BC 300 series - stainless 8 way
" " 5/30/10A Used in BC 300A series - stainless 10 way
" " 5/5O/34A Used in BC 500 series - 50 way
Plate Cable Fixing No 1B Screw fix, 2 way
" " " No 1C Push in BC 300
" " " No 1D Push in BC 500 and FD 105A
Inserter Wire No2A Terminating tool for SC 237
Box Connexion
No 200A Plastic box and lid similar to HES 4 box
" " No 201A 10 or 20 pair DP and Earth
" " No 202A BC 200 case, 40 pair DP
" " No 203A Half size BC300 with FM 5/22/5/A
" " No 230 30 pair
" " No 251 Box to take 5 IDC strips
" " No 254 Network connection box - IDC to Screw
" " No 300A Plastic box and lid. 230mm h, 210mm w, 120mm d
" " No 301A BC 300A with frame mounting 5/30/10A, 100 pair
" " No 302A BC 300A with frame mounting 5/30/8A, 80 pair
" " No 304A Monarch BC
" " No 330A Herald BC (20 port)
" " No 331A Herald BC (60 port)
" " No 350A Regent BC
" " No 403A Fitted with 3 x con 226
" " No 406A Fitted with 6 x con 226
" " No 426A 2 x BC400 with 3 x con 226
" " No 510A Metal 340 pr, 1 way, 1000mm h, 300mm w, 150mm d
" " No 520A Metal 680 pr, 2 way, 1000mm h, 500mm w, 150mm d
" " No 530A Metal 1020 pr, 3 way, 1000mm h, 750mm w, 150mm d
" " No 560A Metal 2000 pairs, 2000mm h, 750mm w, 150mm d
Frame Distribution No 100A Double sided frame - line side has 5 verticals -
4200 pairs. Equip side has 6 horizontals
3600 pairs. 1050 long, 2600mm high, 650mm wide
Frame Distribution No 105A Double side frame of 2 verts giving 1380 pairs each side.
500mm long, 2000mm high, 300mm wide
Earth Clamp No 1A Terminates up to 35mm earth cable on FD's
Cover No 11A 70mm low profile box cover
Rings Jumper No 37A Jumper rings for use in BC's
Part No 1/DPO/163 2 connector posts
" " 1/DPO/164 M3 x 6mm screws and part no 5/DSC/575
" " 1/DCL/183 Base clamps + 2 screws
Screw No8 x 12mm For fixing items in BC 300 and clamping
Wire Connector 9541 2 wire B/Y - Y/B
" " 9571 3 wire G/W - W/G - R/G
" " 9573 4 wire R/G - Bk/O - W/G - G/W
Multiline Terminating Units
Switching module 10 pair disconnected Krone strip - brown
Bridging plug Connection plug for above
NTTA PSTN 10 pair MTU PSTN test module
NTTA test cord MTU test cord - fits between disconnected
strip and test module
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