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British Telecommunications Published by British T elecom Technical Publications. All possible care has been taken in the preparation of this publication, but British Telecommunications plc accepts no liability for any inaccuracies that may be found. British Telecommunications plc reserves the right to make changes without notice both to this publication and to the product which it describes.
Commissioning Procedures Part 4 Facilities and Operating Procedures Part 5 Part 6 Power Fail Arrangements Maintenance Part Part 8 How it Works Parts List of Current Equipment for 'Senator' Part 10.1 Part 10 Auxiliary Equipment Part 11 Documentation 11.l Specification 12.1...
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SENATOR SWITCHING SYSTEM CPE/MS 526 2 (12/88) Issue...
DELs - exclusive only PBX extensions - with or without earth loop recall Private circuits SENATOR CANNOT be used on PBX extensions which use 'C' wire. CPE/MS 526 Issue 2 (12/88)
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Part 1 GENERAL DESCRIPTION 2 (12/88) CPE/MS Issue...
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Part 2 INST ALLA TI ON Contents Page THE CENTRAL CONTROL UNIT INSTALLING THE CCU 2.2.1 Preparation 2.2.2 Fitting the rear mounting assembly FITTING THE POWER SUPPLY UNIT (PSU) FITTING THE APPARATUS SLIDE-IN UNITS 2.4.1 Refit the case 2.4.2 Fitting the apparatus slide-in units (ASU) CABLING EXCHANGE LINE AND EXTENSION WIRING 2.11...
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Part 2 INSTALLATION 2 (12/88) CPE/MS Issue...
Part 2 INSTALLATION THE CENTRAL The CCU is equipped as follows: CONTROL UNIT CCU Housing Assembly, comprising: a) Rear Mounting Assembly b) Case c) Front Cover One microprocessor board (Backplane) One Line Termination board One Power Supply Unit One 5-Exchange Line ASU Three 2-Extension Line ASUs An Intercom Apparatus S lide-in Unit (ASU) (either Loop/Dis or required) must...
Part 2 INSTALLATION INSTALLING THE The CCU should wall mounted on a suitable flat, sound surface. This CCLI should within 3m of a mains socket outlet and should allow the CCU to be clear of the floor and any obstructions. It should not be installed in the vicinity of any equipment liable to cause radio frequency interference e.g.
Part 2 INSTALLATION FIITING THE Remove the two countersunk screws fitted in the top surface of the POWER SUPPLY PSU. Keep these screws handy, ready to fix the PSU in place. UNIT (PSU) With the voltage selector towards the front, fit the tab on the rear of the PSU into the slot at the left-hand side of the rear mounting assembly.
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Part 2 INSTALLATION Connect the mains cable to the PSU. mains cable, not more than 3m long must be obtained locally, and terminated to the terminal block which with its associated cable clamp is mounted in the bottom of the PSU. See Fig 2.3. a) Remove the self-tapping screws which hold the cable clamp to the tenninal block.
Part 2 INSTALLATION FITTING THE If it is more convenient, the exchange line and extension cables may be APPARATUS terminated on the CCU before the rest of the CCU is assembled. (See SLIDE-IN UNITS Sections 2.5 and 2.6.) Refit the Case 2.4.1 The case should now be refitted to the rear mounting.
Part 2 INSTALLATION EXCH EXTN EXTN EXTN EXTN EXTN Extension 1&2 3&4 5&6 9 & 10 7&8 Power terrn1nat1011s Supply input pl POWER SUPPLY UNIT Exr.hange Line tt:rrnination Cover Plate SPARE point. FUSES Case retaining screws CCU LAYOUT INTERCOM ASU (DPA 1210/A (LOOP/DIS) (MF4) OR DPA 1217/A EXCHANGE LINE ASU (DPA 1207/A (5 LINES)
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SA 10255 Extn. Bell Cable equip! Bell Adaptor 2503F ExtnBell Tele85 .. LJU no .. ./3A Cordconn 61500 Tele85 ... Tele85 ... EXTENSION WITH EXTN BELL EXTENSION Fig 2.6 TYPICAL LAYOUT AND CABLING FOR SENATOR CPE/MS 526 Issue 2 (12/88)
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� f= z :::l a: >- w _, a. :::> a. c 0 :::> 0 a. (/) ::! ·.: : : : ..'SENATOR' CONNECTION OF A.C. POWER, EXCHANGE LINES AND EARTHS 2.10 CPE/MS 526 2 ( 12/88) Issue...
All cables are terminated on insulation displacement connections using an Inserter Wire The cable should be run directly to the Line Jack from the Senator Back Plane. The two spare wires should be insulated and must not be used to connect other circuits, unless otherwise specified.
Part 3 THE TERMINAL page Contents 3. 1 SENATORlOANDSENATORSUPERlO 3. 4 REFURBISHED TERMINALS OLD VERSIONS OF SENATOR TERMINAL 3. 4 3.3. 1 Handset No 3. 1 526 Issue 2 (12/88) CPE/MS...
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Part 3 THE TERMINAL CPE/MS 526 Issue 2 (12/88)
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Senator Super 10 (dark grey), has the same facilities as Senator 10, with the addition of full hands free working. The terminal has a mechanical latching button for loud speech operation which is linked to the hookswitch plunger.
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- amplified handset with volume control at rear of earpiece. Handset locking/non-locking on-off switch - used as a transmitter cut-off. A small number of early installations of Senator were provided with Handsets by using an Extension Bell Adaptor. 2 (12/88)
Part 4 COMMISSIONING PROCEDURES The system should not be commissioned until all the cables have been tenninated in the CCU and at every extension. Fit the lid to the CCU and connect the mains supply to the unit. The system is now running and ready for service. Each extension should tested as follows: With the handset in place on the telephone.
Part FACILITIES AND OPERATING PROCEDURES Contents Page TONES EXCHANGE LINE SERVICE 5.2.1 Outgoing calls 5.2.2 Incoming calls 5.2.3 Programming exchange line ringing HOLD TRANSFER D IVERT To program 'Divert' 5.5.1 5.5.2 To nominate extensions 5.5.3 To nominate extensions 5.5.4 While in 'Divert' EXCHANGE LINE CONFERENCE CALLS TEN ADDRESS REPERTORY DIALLING 5.7.1...
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Part 5 FACILITIES AND OPERATING PROCEDURES CPE/MS 526 2 (12/88) Issue...
Part 5 FACILITIES AND OPERATING PROCEDURES TONES The system generates its own tones which are used on internal calls. These are: Ring Tone (RT). This is a 440 Hz tone with a regular 0.786 sees ON, 2.36 sees OFF cadence. Ringing.
Part 5 FACILITIES AND OPERATING PROCEDURES Programming 5.2.3 Normally the tone callers at every extension will sound for all incoming calls exchange line ringing but each extension user may individually decide which exchange lines will 'ring' their telephone. The extension user may check or alter the programmed arrangements as follows: Leave the handset 'on-hook'.
Part 5 FACILITIES AND OPERATING PROCEDURES If required, the 'Divert' facility may be cancelled by programming the extension's own number using the above procedures. 5.5.4 While in 'Divert' The diverting extension can make outgoing exchange or intercom calls but all incoming calls are signalled at the nominated extension. A green 'Calls Diverted' lamp (LED) beside the DIVERT button glows on the diverting telephone and a green, 'divertee' lamp on the nominated extension telephone glows.
Part 5 FACILITIES AND OPERATING PROCEDURES The procedure for storing and sending a number is described below, and is also applicable for Tele 8553. For Teles 8551 and 8521 refer to the relevant User Guide. 5.7.1 To store a number Lift the handset Depress and release button P.
Part 5 FACILITIES AND OPERATING PROCEDURES INTERCOM CALLS Any extension on the system may make an intercom call to any other TONE, extension by lifting the handset and on receipt of DIAL keying the required extension number. If the called extension is free the telephone will be rung and the calling extension will receive ring tone.
Part POWER FAIL ARRANGEMENTS No provision is made for standby power to maintain the operation of the system if the mains power supply fails. The relays in the CCU which normally perform the switching of the extension and exchange lines are arranged such that when the power fails, each exchange line is directly connected to certain extensions as follows (see diagram overleaf).
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MAINTENANCE Part 7 Contents page ON SITE MAINTENANCE TEST CONDITIONS FUNCTIONAL TESTING FAULT DIAGNOSIS POWER UNITS ASU CHANGEOUT BACKPLANE MAINTENANCE EXCHANGE SYSTEM REPLACEMENT CPE/MS 526 Issue 2 (12/88)
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Part 7 MAINTENANCE CPE/MS 526 Issue 2 (12/88)
The item codes and descriptions of these items are given in Section 9. A suitable carrying case for the Maintenance Kit is available (Case 265A). N.B. Case 265A will not hold a Power Unit. On site maintenance of SENATOR systems is by functional testing, logic diagnosis, ASU changeout or system replacement. NOTE...
45v d.c. provided the extension interface ASU is fitted, otherwise they will test 'dis'. FUNCTIONAL SENATOR offers a basic range of facilities which should be readily TESTING understood by the customer, leading to few misoperation faults. The customer should have copies of the Senator Extension User's Handbook.
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Part 7 MAINTENANCE Check Exchange Lines, E:r;timsion Cabling, Check All fatensions Plugged in Check All AS U.s and Ribbon Cables RSC ACTIVITY Plugged 1n Mains fail Relays Released Change Appropoate EX1ension A.S.U Turn of'f Power Clear or Check all AS.U Change unit Plugged in as necessary...
- fuse 73/4 Fuse FS 3 (47v external output) - fuse 72/0.5 ASU CHANGEOUT Before removing or replacing a Senator ASU the power supply must be switched off. Precautions must be taken prevent damage to an ASU by electrostatic discharge.
REPLACEMENT that a fault condition will arise to cause all units to fail. Senator systems are sold outright and so faulty systems may only be recovered when they have been replaced complete. The Central Control Unit must never be transported with the power unit in position as this may strain the mounting lugs and so cause damage.
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Part 7 MAINTENANCE 2 (12/88) CPE/MS Issue...
CCU power unit. Briefly, the microprocessor in the CCU continuously monitors the state of incoming exchange lines and the data pairs from the SENATOR telephones. The microprocessors in the telephones monitor the incoming data pairs from the CCU and the state of the gravity switch springs and the 'function' buttons.
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Part 8 HOW IT WORKS 2 (12/88) CPE/MS Issue...
Senator Adaptor SA 10253 410972 Adaptor LJU Bell Adaptor Extension Bell Adaptor 870216 Extension Bell Adaptor Senator Adaptor SA 10255 410974 Senator Adaptor SA 10254 37 4225 IP BX Facility Modified Extension Card LD/MF Basic Terminal Senator Telephone 8560 870285 A orB...
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Part PARTS LIST OF CURRENT EQUIPMENT FOR SENATOR CPE/MS 526 2 (12/88) Issue...
Part 10 AUXILIARY EQUIPMENT 10.2 CPE/MS 526 2 (12/88) Issue...
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Two types of Extension Bell Adaptor can be used on the Senator: (1) Extension Bell Adaptor SA10255; or (2) LJU Bell Adaptor. The LJU Bell Adaptor supersedes the Bell Adaptor SA10255.
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Part 10 AUXILIARY EQUIPMENT 10.1.1 Installation details for The Extension Bell Adaptor should be fitted close the extension extension bell adaptor telephone as possible, but bearing in mind that the Adaptor is mains powered SA10255 and must be positioned close to a suitable socket outlet. The cable to the extension from the CCU must be tenninated on the Adaptor, and a 6-wire cable, Cable Equipment 2503F, should then be run to the telephone socket.
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10.1.3 Installation details for The LJU Bell Adaptor is fitted in place of the normal Senator UU at those LJU bell adaptor extensions that require an extension bell facility. The bell adaptor is wired to the CCU using 6-wire twisted pair cable (CE 2503F). Please refer to Note on page 10.4.
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Senator system. An illuminated press switch which controls the ringing of the bell in the telephone at the extension, is mounted in one comer of the unit as shown in the illustration.
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IDT Strips Fig 10.6 EXTERNAL EXTENSION ADAPTOR Up to four 2-wire extensions can be provided on a Senator system. The telephones fitted at the extensions will usually be standard instruments wired as '2-wire PBX extension with earth loop recall', e.g. Tele 8200R, but other approved 2-wire telephones equipped with an earth loop recall button may be used.
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Part 10 AUXILIARY EQUIPMENT 10.2.1 Installation The External Extension Adaptor should be fitted as close to the CCU possible, but should be positioned such that the customer can both see and operate the illuminated press switch easily. A 6-wire cable, Cable Equipment 2503F, should be run from the CCU to the Adaptor, and the connection from there to the telephone should be made using the appropriate 2-wire cable.
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3: 0 3: <t w x t- z > " LL c:t:: I- <( z :::: :> <( a.. Ul u 10.7 MODIFICATION TO SENATOR EXTERNAL EXTENSION ADAPTOR WHEN USED WITH SSAClSC SIGNALLING CONVERTERS 10.12 CPE/MS 526 2 (12/88) Issue...
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A telephone connected to an External Extension adaptor has access to most operating procedures of the facilities available to a Senator telephone but some of the operating procedures are different. System dial tone is not returned to an external extension when the handset is lifted.
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Part 10 AUXILIARY EQUIPMENT If the enquiry call was to another Senator extension, that extension must first be allowed to clear down. The handset should then be replaced momentarily and the held call will be reconnected when the handset is lifted.
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DRC, in the packaging of the replacement unit, with a fault label A8807 A attached giving the details of the fault. 10.3 INTER PBX Inter PBX circuits may be connected to the Senator in one of two ways: CIRCUITS Onto an even numbered extension, using a Senator Inter PBX Adaptor SA10254.
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Part 10 AUXIUARY EQUIPMENT Remote Answering Lamp Fixing Hole Fixing Hole IDT Strips NOTE Top PCB is not shown for clarity. Fig 10.9 INTER-PBX ADAPTOR CPE/MS 526 2 (12/88) 10.16 Issue...
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PBX operator, or be able to set up a call by keying the number of the extension they want. When the PBX operator or a PBX extension user is connected to the Senator system over the Inter-PBX circuit, they will hear Senator system dial tone in the same way as the user of a Senator extension would upon lifting the handset.
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10.3.7 Cleardown before CSA If the Senator is equipped with MK2 software and the extension clears down before the CSA signal is received, and provided no autotransfer of an exchange line has taken place, the adaptor is sent cleardown information from the CCU.
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1Al/SA10200 provides the correct interface, and may be used to send SSDCS or SSDClO to line. The SSDCS will usually be converted to SSACIS using signalling units 44B. A block diagram is shown in figure 10.11 below. SSDC5 SENATOR CCU GENERATOR RELAY SET SSDC10 IAl/SA 1 0200 SIG.
Part 11 DOCUMENTATION The documentation published for the Senator is: Senator User Guide CPE/MS 525 Senator System Manual CPE/MS 526 LJU Bell Adaptor Installation Notes CPE/MS 372. 11.l CPE/MS 526 Issue 2 (12/88)
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Part 12 SPECIFICATION 12.1 MAINS SUPPLY Selectable 220, 230, 240 250 volts a.c. 50Hz Nominally 240 volts a.c. 6.5% to -8.5%. 12.2 POWER 200W maximum CONSUMPTION 12.3 DIMENSIONS Width 530 mm Depth 2220 mm Height 275 mm 12.4 WEIGHT 11.5 kg 12.5 ENVIRONMENT Temperature...
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