Mitel SX-200 DIGITAL Pabx Engineering Information Manual
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General Maintenance Information 1. INTRODUCTION General 1 .Ol This Section describes the maintenance philosophy, features, and facilities of the SX-ZOO@ DIGITAL Private Automatic Branch Exchange (PABX). Included are the use of diagnostic tests, maintenance aids, local and remote terminals, and other tools available to assist maintenance users in ensuring a continued high standard of efficiency and performance. Further details concerning SX-200@ DIGITAL PABX maintenance may be found in the Sections listed in Table l-l. TABLE ‘l-1 SX-200@ PRACTICES MITLS 108-093- 1 00-NA General Description MITL9108-093-105-NA Features and Services MITLS 108-093-I 80-NA Engineering Information MITLS 108-093-350-NA Troubleshooting MITLS 108-093-35 1 -NA RS-232 Maintenance Terminal Reason for Issue - 1.02 This is the first issue of this Section. The SUPERSET qTM Set 1.03 For information on the SUPERSET 4TM set, see Section MITLS 108-093-l 07-NA, SUPERSET 4. The SUPERSET 3TM Set 1.04 For information on the SUPERSET 3TM set, see Section MITL9108-093-106-NA, SUPERSET 3. Page l-l/l
General Maintenance information 2. SYSTEM OVERVIEW General- 2.01 The SX-200@ DIGITAL PABX system is a fully electronic solid- state microprocessor-controlled switching system employing digital switching techniques and incorporating special peripheral de- vices and architecture to provide a modern integrated office commu- nications system. A block diagram of the system is shown in Figures 2-l and 2-2. Maintenance 2.02 The modular design and functional packaging of the system permits rapid location and replacement of defective equipment. Circuit malfunctions are detected by diagnostic tests automatically initiated by the Central Processing Unit (CPU). These tests are detailed in Part 6 of this Section. The use of troubleshooting procedures is outlined in Section MITL9108-093-350-NA. Troubleshooting helps to locate the defective circuit card or assembly, in order to indicate to the service personnel the required field-replaceable unit. Diagnostic tests and procedures generally do not interfere with users unaffected by the malfunction. Physical Description 2.03 The SX-200@ DIGITAL PABX equipment cabinets are of metal construction, and are shown in Figures 2-3 and 2-4. All con- nections from the cross-connecting terminals to the system equip- ment cabinets are made using standard connector cables. Connections between cross-connecting terminals, the Attendant Console and exter- nal equipment are made in accordance with accepted practice. A more detailed physical description may be found in Section MITL9108-093- IOO-NA, General Description. 2.04 As an option; the SX-200@ DIGITAL PABX may be fitted with a standby Uninterruptable Power Supply (UPS). The reserve power should maintain system operation for approximately 2 hours in the event of a primary power failure. Each cabinet in a multi-cabinet system must be fitted with one dedicated UPS. Refer to the manufac- turer’s instructions for information on installation and maintenance. Control Equipment Cabinet 2.05 The door on the front of the SX-200@ control equipment cabi- net provides access to the system maintenance panel, two digital equipment bays on the bottom shelf, two more digital bays or an analog bay in the top shelf, and the Main Control (MC) card. The rear doors provide access to the backplanes, equipment interface con- nectors, and the SX-200@ power supply. Connection to an optional peripheral equipment cabinet is made through the cable ducts located at the bottom of either of the cabinet side panels Page 2-l
General Maintenance Information I ’ I I _; -- l =---I FLOPPY DISK DRIVE SUBSYSTEM 512x512 CHANNELS) I I CONTROLLER TO/FROM PERIPHERAL DEVICES SAY 4 KAOlSOR’ Figure 2-l System Block Diagram (336-Port Configuration) Page 2-2
General Maintenance Information tOL CARD 1 I I I 1 I I LAY 1 AND BAY 2 I’ I I I t II 6 DATA LINKS ADDRESS. DATA AND CONTROL BUS -1-i 1 RING LINK 1 PROCESSOR ----I 1 SPARE LINK I I DX ARRAV WlCJJYUC ClllrVCTFM I i I 116 x 16 LINKS) u PERIPHERAL L-!d 1 DATA LINK 1 i.ee1-1-1- _DK-I--_I.-.-J 1 --- - -- - VOICE/DATA TO/FROM PERIPHERAL DEVICES 3 DATA LINKS BAY 3 I DIGITAL IN;EFW&E SUBSYSTEM C 32 SPEECH N ..: PATHS T R 15 VOICE CARDS I I I TO/FROM CONTROL PERIPHERAL DEVICES VdiCE CARDS t- I I- ITO/FROMl I I I TO/FROM 1 PERIPHERAL DEVICES PERIPHERAL DEVICES I I 7877Rl E Figure 2-2 System Block Diagram (480-Port Configuration) Page 2-3
General Maintenance Information PERIPHERAL SHELF r--I BAY 4 BAV 3 III I CONTROL SHELF MAINTENANCE PANEL FANS / POWER DISTRIBUTION AC FILTER KAOP33RZE Figure 2-3 SX-200@ DIGITAL Equipment Cabinets (336~Port Configuration, Wnlwersa% SX-200@ DIGITAL Control Cabinet) Page Z-4
General Maintenance Information 1 CONTROL CABINET BAY 3- , , % - - I -BAY 5 - BAY 4 Figure 2-4 SX-200’ DIGITAL Equipment Cabinets (480-Port Configuration, Standard SX-200@ DIGITAL Control Cabinet) Page 2-5
General Maintenance Information Peripheral Equipment Cabinet (for 480-Port Configuration only) 2.06 The door on the front of the SX-200@ DIGITAL peripheral equip- ment cabinet provides access to the peripheral maintenance panel, and two analog equipment bays. The rear doors provide access to the backplanes, equipment interface connectors and the SX-200@ DIGITAL power supply. Connection to the control equipment cabinet is made through the cable ducts located at the bottom of either of the cabinet side panels. Digital Equipment Bays 2.07 Digital equipment bays house the voice/data digital peripheral cards Digital bays reside only in the control equipment cabinet. Bays 1, 3 and 4 (optional) may contain up to eight digital cards, a Bay Control card, and a bay power supply. Bay 2 (not optional) may contain up to four digital cards, a bay power supply and a floppy disk drive unit. Analog Equipment Bays 2.08 Analog equipment bays house the analog peripheral circuit cards, a Digital Interface Card (DIC), a Peripheral Control Card (PCC), and an interrupt Scanner card (Bay 5 requires only a DIC card). Analog equipment bays are optional, and reside in either the control equipment cabinet (Bay 3) or the peripheral equipment cabinet (Bays 4 and 5). Analog bays may contain up to 14 analog cards each. Main Control Card 2.09 The Main Control card is the “brain” of the SX-200@ DIGITAL PABX. It is responsible for call processing, tone generation and detection, voice conferencing, circuit and message switching, sending diskette information to the Peripheral Control cards, and the generation of ringing signal. i Technical/Electrical Characteristics 2.10 See Section MITL9108-093-180-NA, Engineering Information. Attendant Console 2.11 The SX-200@ DIGITAL Attendant Console (Figure 2-5) is en- closed in an attractive, streamlined housing. Located on the left side of the console are a pair of handset/headset cable connections allowing simultaneous operation and supervision. The console key- board contains two rows of seven fixed function keys, two rows of five softkeys, and a full numeric keypad. The console LCD display, mounted above the keyboard, displays the active state of calls in progress, among other things. See Section MITL9108-093-315-NA, Attendant Console Description for further details. Page 2-6
General Maintenance Information Figure 2-5 Attendant Console Page 2-m
General Maintenance information 3. MAINTENANCE AIDS The Maintenance Terminal 3.01 The RS-232 ASCII Maintenance Terminal (see Figures 3-l and 3-2) is the primary maintenance tool for the SX-200@ DIGITAL PABX. A wide range of commands are available at the maintenance terminal to help the user to locate and replace faulty equipment. For further information, refer to Section MITL9108-093-351-NA, RS-232 Maintenance Terminal. 3.02 The SX-200@ DIGiTAL Attendant Console (see Figure 2-5) may be used as an alternate -maintenance work station. All of the commands available at the maintenance terminal are available at the attendant console as well. Control Cabinet Maintenance Panel 3.03 Located at the front of the control equipment cabinet is the control maintenance panel (see Figures 3-3 and 3-4). This pro- vides maintenance personnel with access to the system through the maintenance ports and test line connectors. Also housed on the con- trol maintenance panel are the Power Fail Transfer control switches, and the power on/off switch and LED power indicator for Bay 3 (480-Port Configuration only). 3.04 Maintenance Port. These connectors are provided to allow the maintenance person to connect an RS-232 ASCII terminal to the system for maintenance or programming purposes. The terminal may be connected either directly to the system (using the LOCAL port), or indirectly, via a modem (using’the REMOTE port). Note that only one of the Maintenance Ports may be used at any point in time. Note that the Remote Maintenance port is located on the Universal cabinet’s rear panel. Refer to Section MITL9108-093-351-NA, RS-232 Maintenance Terminal for further information. 3.05 Power Fail Transfer Control Switches. These switches allow the maintenance person to determine the type of failure that will cause a power fail transfer to occur (refer to Section MITL9908-093-105-NA, Features Description for information on power fail transfer). There are three options: transfer on power supply failure, transfer on common control failure, or transfer on either power supply or common control failure. These options are selected tiy switching the POWER SUPPLY and COMMON CONTROL switches to the ENABLE and DISABLE positions as required. The MASTER SWITCH allows the maintenance person to manually force a power fail transfer, by switch- ing to the TRANSFER position. For normal system operation, this switch should always be in the NORMAL position. 3.06 Maintenance Console. This connector allows the maintenance person to connect an Attendant Console directly to the main- tenance panel for maintenance or programming purposes, in lieu of an RS-232 ASCII terminal. To facilitate operation of a maintenance con- sole, there must be a Console Module installed on a Universal card Page 3-l
General Maintenance Information TERMINAL REMOTE - DEDICATED, PUBLIC NETWORK TERMINAL REMOTE - DIAL-UP x CROSS CONNECT i ASSIGNED TIP 81 RING PAIR FOR AUTO-ANSWER MODEM. TO DPAEX VIA CENTRAL OFFICE MODEM REMOTELV LOCATED TERMINAL NOTE: The Auto-Answer MODEM Is permanently connectad to one local statlon circuit (extenslont. XA0197ROEO Figure 3-l Maintenance Terminal Connection (Universal SX-SOB@ KJIGITAL Control Cabinet) Page 3-2