IBM 1750 | |||||||
PXML No. 40 APPROVAL No. NS/1210/GF/1981/PR The IBM 1750 is a stored program, microprocessor controlled PABX introduced in the late 1970's. The analogue switching network uses thyristor cross-points. The system can be expanded from a minimum of 100 extensions to a maximum of 760 extensions (96 exchange lines) in modular stages. In addition to supporting modular hardware expansions, the system software provides separate feature packages and function sets. Network and call distribution facilities are also available. 50 volt power to the system is provided by either Rectifier's No. 152 or 153, with additional 24 volt supplied by Rectifier 151 or Harmer and Simmons TC1A. Later installations use a stand alone ELTEK Power Cabinet, which provides both voltages along with standby batteries. The software is provided on 8 inch floppy discs, each having labels showing their software identification and release level. The discs contain the operational, utility, and maintenance diagnostic programs. Made and installed by IBM UK Ltd. MAINTAINER BT is the approved maintainer for all systems and IBM UK Ltd are approved maintainers for liberalised system ONLY (those are systems brought into service after 1 July 1985). APPROVAL STATUS The system was fully approved in October 1981. The on site PXML should be applicable to that switch's modification/software level. A list of approved software releases are contained in the latest PXML. The following software releases can be fitted to any site:- RELEASE NO EC NO 1.0 098425 1.1 098799 2.2 378385 3.3 873430 3.4 A04481 To find out which software/EC/patches are fitted to site, sign on and load Programme Al, then type in SHL or SSHL. PARTS PART NO DESCRIPTION 4178065 DISK CARD 5619704 DDA 2 5623352 DDA 1 5654270 NIF 2 5654506 SW 5654640 SIF 2 6122084 CAC IN POWER KIT 5654686/6122073 SOL 5654817 CEPA 5654986 SAC I/0 IN POWER KIT 5654288 SAC CPL IN POWER KIT 5655125 RDC 5655133 ROS 1 5655134 ROS 2 5655135 ROS 3 5806560 NM 1 5806572 MKD CARD 5806573 LI 2 5806577 SDT CARD 5806583 STP 5806590 PTD 5806599 OID 5860433 DXP 5861249 NM 12 5861252 MKC 5862979 NM 9 5863162 AUR 5864611 CL 3 5864612 CL 4 5864613 XPC 2 5864614 OCD 5864617 MPW 2 5864626 RTD 6121905 DVR 6121922 DVR 8523016 CCA 1 8523023 EIA 8526485 CCA 8562441 MP 8562442 I/0 8562443 SIF 1 8562444 PSW 8562445 DT 8562446 SCA 1 8562459 RCV 1 8563145 ISOL 8563147 RCV 2 8563156 RCV 3 8565601 NIF 1 8565615 CA 8565624 SCA 2 2402024 STORAGE 8254822 CLOCK 1730923 SCAN 1776501 ITF 8254819 REG 8258430 ASL IN POWER KIT 6122073 SOL (WITH NEW EC) 5806571 DRIVER 5654850 ROS 1 OLD EC LEVEL 5654851 ROS 2 OLD EC LEVEL 5654852 ROS 3 OLD EC LEVEL 8562449 SIF 2 OLD EC LEVEL 5654317 CABLE 8277800 DC PWR OP 5654318 CABLE 1732321 OTS 5654319 CABLE 1732616 LEDDIS OP 5654320 CABLE 1732872 1755 PWR 5654322 CABLE 2305616 BELT 5654323 CABLE 2426124 RELAY 5654324 CABLE 2462606 STEPPER M 5654325 CABLE 4178035 HEAD ASM 5654326 CABLE 4178047 SOLENOID A/EC 5654327 CABLE 4178057 DRIVE MOT 5800926 CABLE 4178065 DISK CARD 5800930 CABLE 5562044 BAND 5800933 CABLE 5562081 LES ASM 5802237 CABLE 5562083 PHOTO TX ASM 5805467 OLC IN OPE KIT 5623482 STO 5808469 OAW IN OPE KIT 5654298 CABLE 5862985 ODG IN OPE KIT 5654299 CABLE 5863100 ODD IN OPE KIT 5654309 CABLE 5863134 OLT IN OPE KIT 5654310 CABLE 5864614 OCD 5654311 CABLE 6121467 CE PANEL 5654314 CABLE 8274600 CPL BOARD 5654315 CABLE 8274602 I/0 BOARD 5654316 CABLE 8563155 CCTL OPE Some cards have been superseded by later revision cards. All cards of the same description are compatible unless stated. The on site documentation (BLDS) also contain old/new level part numbers. PARTS LIST |
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Last revised: November 03, 2021FM |