Inter-Tel GMX-48 INSTALLATION & MAINTENANCE Manual
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INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE ‘. OVERVIEW Issue 2, May 1990 4. FEATURES SUMMARY 4.1 System, keyset, single-line set, DSYBLF Unit, and attendant features are listed below and on the following pages. Those features marked with an asterisk (*) require additional equipment. For descriptions and operating instructions, refer to the SPECIFICA- TIONS and FEATURES sections of this manual. o* l * l * l * A. SYSTEM FEATURES . Optional battery back-up Optional external paging equipment . Optional station message detail recording E (SMDR) and/or system activity report (SAR) out- put device(s) - SAR available only in the Advanced software package 1 Optional playback devices for use with the auto- mated attendant and hunt group announcement/ overflow station features - available only in the Advanced software package Hardware and General System Features l 0 0 0 0 0 0 KF-rated Basic and MF-rated Intermediate or Ad- vanced software Flexible station instrument configuration and numbering plan RS-232-C connectors on the KCB and APMs for connecting a programming terminal, SMDR/SAR output devices, or a modem for remote mainte- nance - APMs available only in the Intermediate and Advanced software packages; SAR available only in the Advanced software package Easily accessible system voltage test points Database battery back-up with voltage test points Adjustable baud rates for on-site programming (300, 1200, 2400, and 4800 baud using the KCB; 1200 baud using an APM) Variable system timers o* Optional external music source o* Optional off-premises stations with variable ring cadence - available only in the Intermediate and Advanced software packages l * Optional OPX repeaters - available only in the Intermediate and Advanced software packages l * Programmable reports for toll restriction, auto- matic route selection (ARS), and station data - ARS available only in the Advanced software package l * Optional auto-answer modem for remote pro- gramming l * Optional multi-port voice mail system - available only in the Intermediate and Advanced software packages o* Optional facsimile machine - available only in the Intermediate and Advanced software packages o* Optional doorbox System Organization and Record Keeping Features 0 Six paging zones l * Station message detail recording (SMDR) l * System activity report (SAR) - available only in the Advanced software package Call cost accounting Forced, standard, and optional account codes Flexible attendant arrangements Four tenant groups Five hunt groups - optional playback-equipped overflow/announcement station(s) available only in the Advanced software package System alarm display and reporting C.O. Line Features 0 Direct inward system access (DISA) - available only in the Advanced software package l * Automated attendant - available only in the Advanced software package Dual-tone multi-frequency (DTMF) and/or dial- pulse signalling Outgoing-access, allowed-answer, and ring-in as- signments on a station-by-station basis (day lists and night lists) Day and night modes of operation Day and night toll restriction on a station-by- station basis (including provisions for area/office code 1 restrictions and provisions for PBX, absorbed-digit, and equal access dialing) Auto lines and line groups - restricted to one line each with the KF-rated Basic software package Automatic incoming line answering Automatic outgoing line selection - restricted to a single auto line with the KF-rated Basic software package Page l-3
OVERVIEW Issue 2, May 1990 I. INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE Automatic out-of-range line selection/status on 1Zline keysets (may also be assigned to 24-line keysets if needed) Automatic route selection (ARS) - available only in the Advanced software package System-wide C.O. line privacy release option C.O. reseize capability basis General Station Features Programmable feature operation on a station-by-station codes for easy station Call privacy/privacy release Station-to-station intercom calls Off-hook voice announce (OHVA) calls (requires special installation and programming) Inter-station messages and message cancel Ring intercom always Automatic camp-on (station, CO. line, and ARS) Busy line/station callback (queue) Individual hold System hold Call splitting Hold recall Call waiting Transfer to hold Transfer recall Call transfer to outside telephone numbers (un- amplified) and intercom numbers Reverse transfer and group call pick-up Five-way conference calls (unamplified) Secretarial intercept Call forward to outside telephone numbers (un- amplified) and intercom numbers (the ability to forward outside‘calls or all calls may be enabled/ disabled on a station-by-station basis) System speed dialing (including non-display and tenant-specific numbers) Station speed dialing Redial (last number dialed or, at keysets only, last number saved) Do-not-disturb with customized messages (the ability to place a station in do-not-disturb may be enabled/disabled on a station-by-station basis) l * Optional headset l * Optional handset amplifier l * Background music l Microphone mute Page l-4 Optional liquid crystal display (LCD) for viewing: numbers dialed; speed-dial numbers; inter- station, do-not-disturb, and reminder messages; date/time; keyset identification; station program- ming; call cost data; etc. Optional Data Port Module for installing a mo- dem-equipped data device, or for installing a loud ringing adapter (LRA) and signalling device(s) Simultaneous voice/data communication (re- quires an optional Data Port Module, a modem- equipped data device, and special secondary voice path installation) 1Zkey pushbutton keypad 18 feature keys for one-key access to feature codes (ten of the keys are user programmable) 10 speed-dial (SD) keys with light-emitting diode (LED) indicators 24 direct-access C.O. line keys with LED indica- tors (for incoming and outgoing call indication/ access) Integrated speakerphone (allows handsfree oper- ation on outside calls and intercom calls; can be disabled on a station-by-basis) Speakerphone on/off Slide-out directory card Ring and voice volume controls User-programmable ring tone Self-test function Hearing aid-compatible (HAC) handset Reversible baseplate for wall mounting Cancel miscellaneous operations Hookflash Hunt group remove/replace House phone . Station call monitoring (hunt group supervisors only) with optional periodic monitoring tones - the optional tones feature requires an APM and is available only in the Intermediate and Advanced software packages 24.LINE KEYSET FEATURES
INTER-TEL PRACTICES GMX-48 INSTALLATION 8z MAINTENANCE Handsfree answer enable/disable On-hook dialing/monitoring Page remove/replace Intercom and C.O. (system speed-dial) directories for display keyset users - available only in the Intermediate and Advanced software packages Automatic intercom and/or C.O. call access 12.LINE KEYSET FEATURES 1Zkey pushbutton keypad 10 feature keys for one-key access to feature codes (three of the keys are user programmable) 8 speed-dial (SD) keys with light-emitting diode (LED) indicators 12 direct-access C.O. line keys with LED indica- tors (for incoming and outgoing call indication/ access) Integrated speakerphone (allows handsfree oper- ation on outside calls and intercom calls; can be disabled on a station-by-basis) Speakerphone on/off Slide-out directory card Ring and voice volume controls User-programmable ring tone Self-test function Hearing aid-compatible (HAC) handset Reversible baseplate for wall mounting Optional headset Optional handset amplifier Background music Microphone mute Handsfree answer enable/disable On-hook dialing/monitoring Page remove/replace Automatic intercom and/or CO. call access SINGLE-LINE INSTRUMENT (SLI) FEATURES 1Zkey pushbutton keypad OVERVIEW Issue 2, May 1990 . Four user-programmable feature keys for one-key access to feature codes Timed hookflash (FLASH) key E Ring volume control Hearing aid-compatible (HAC) handset Reversible baseplate for wall mounting Selectable AC/DC ringer Optional message waiting indication tones - available only in the Intermediate and Advanced software packages l * Optional handset amplifier E. DIRECT STATION SELECTION/BUSY LAMP FIELD (DSS/BLF) UNIT FEATURES o* Up to 5 units may be installed Each unit has 60 keys with LED indicators for one-key access to up to 60 station intercom num- bers and/or hunt group pilot numbers (the LEDs show the status of the assigned stations and/or hunt groups) ATTENDANT FEATURES System speed-dial number/name programming System alarm reporting Night answer and night ring-in programming Enable/disable system night mode Set date and time of day Attendant recall System do-not-disturb and reminder message pro- gramming Station feature programming (user name, tenant group, secretarial intercept, and attendant) Immediate off-hook voice announce (OHVA) calls (requires a DSS/BLF Unit and special instal- lation and programming) Enable/disable background music to external pag- ing speaker(s) Line maintenance feature for taking C.O. lines out of service and placing them back in again SAR report can be generated at any time by enter- ing a feature code - available only in the Advanced software package Page l-5
OVERVIEW Issue 2, May 1990 ‘. INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE G. MAXIMUM CAPACITIES 4.2 Some of the features have maximum capacities that are dependent on the availability of system chan- nels and/or circuits. The features that have capacities include the following: Paging zones Simultaneous five-party con- ference calls (unamplified) System speed dialing Numbers per system Digits per number Station speed dialing Numbers per station - keyset Numbers per station - single-line set Digits per entry 6 8 100 32 10 CO., 10 intercom 10 C.O. or intercom 16 C.O., 4 intercom* * The three-digit intercom number can be preceded with a pound (#) to speed dial private intercom calls to the station. Or, a “4” may be entered be- fore a station intercom number or hunt group pilot number to quickly reverse transfer (pick up) calls from that station or hunt group. Rediaiing per station ARS (Advanced software only) Route groups Lines per route group Dial rules (16 digits each) Route group callback requests per system Callback (queue) request per station Camp on by a station Stations camped on. to a station Stations camped on to a line Inter-station messages per system Programmable reminder messages Message requests per system Do-not-disturb messages Messages per system 1 number, 32 digits 8 24 10 (7 pro- grammable) 25 1 1 47 48 126 20 120 20 48 Allowed long distance numbers Digits per number Alternate carrier numbers Digits per number Account codes Forced Standard Digits per code Attendants DSSIBLF-equipped keysets Intercom numbers per DSS/BLF Unit Hunt groups Per system Stations per hunt group Announcement stations per hunt group (Basic and Ad- vanced software only) Overflow stations per hunt group Overflow count maximum Tenant groups 20 10 20 10 120 32 4-8 48 5 60 5 60 in hunt group 1, 20 in hunt groups 2-5 3 1 25 4 Voice computer hunt groups (Advanced software only> Per system 15 Units per hunt group 16 in groups 6-10, 8 in groups 11-20 C.O. lines -MF-rated Auto lines 24 Line groups 8 Lines per line group 24 C.O. lines -KF-rated Auto lines 1 Line groups 8 Lines per line group 1 24-line keysets installed with secondary voice paths (for receiving OIIVA calls and/or for simultane- ous voice/data communication) 24* * Page l-6 Two keyset circuits are needed for each 24&e keyset installed with a secondary voice path. Refer to SPECIFICATIONS, page 213, for more infor- mation.
INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE SPECIFICATIONS Issue 2, May 1990 SPECIFICATIONS CONTENTS PAGE 1. 2. 3. 4. 5. Introduction .......................................................... Cabling And The Main Distribution Frame (MDF) ....................... A. Station Connections .............................................. B. C.O. Line Connections ............................................ Key Service Unit (KSU) ............................................... A. KSU Description ................................................. B. System Power Supply ............................................. C. KSU Control Board, Expansion Module, And Accessory Port Module .... Station Instruments .................................................. A. Keysets ......................................................... B. Direct Station Selection/Busy Lamp Field (DSWBLF) Units ............ C. Single-Line Sets .................................................. D. Off-Premises Single-Line Stations .................................. E. Playback Devices ................................................. Optional System Equipment ........................................... A. Programming Terminal, SMDR/SAR Output Device, And Remote Maintenance Modem Requirements .......................... B. System Battery Back-Up ........................................... C. Doorbox ......................................................... D. Voice Mail ....................................................... E. FAX Machine .................................................... 2-2 2-3 2-3 2-4 2-5 2-5 2-6 . 2-7 2-11 2-11 2-13 2-13 2-14 2-15 2-16 2-16 2-17 2-18 2-18 2-18 Page 2-1
SPECIFICATIONS Issue 2, May 1990 ‘. INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE 1. INTRODUCTION l 1.1 This section describes the following hardware: l - Cabling and the Main Distribution Frame l (MDF) l - Key Service Unit (KSU) 1ZLine (non-display) Keysets Direct Station Selection/Busy Lamp Field (DSS/ BLF) Units Single-Line Instruments (SLIs) Industry-standard single-line, dual-tone multi- frequency (DTMF) sets - Station Instruments - Optional System Equipment 13 The GMX-48 System can be equipped with up to 24 loop start C.O. lines and up to 48 station instru- ments. The lines and stations are controlled by the Key Service Unit (KSU). Without Expansion Mod- ules (EXPs) or Accessory Port Modules (APMs) in- stalled, the KSU Control Board (KCB) can be equipped with up to four C.O. lines and up to eight keysets (or DSS/BLF Units). 1.3 For increased capacity, up to five EXPs may be installed. Each EXP can have up to four C.O. lines and up to eight keysets connected to it. Or, in place of one or two of the EXPs, up to two APMs can be in- stalled. Each APM can have up to six single-line de- vices (such as single-line sets, playback devices, voice mail units, FAX machines, etc.) connected to it. Possi- ble system configurations are are shown in the chart below. 1.5 A wide variety of optional system equipment can also be installed, including: l Off-premises stations and OPX repeaters; refer to pages 2-14 and 3-18. l Playback devices; refer to pages 2-15 and 3-46. l Output device(s) for the station message detail re- cording (SMDR), error recording, and system ac- tivity report (SAR) features; refer to pages 2-16 and 3-48. l Auto-answer modem for remote system program- ming; refer to pages 2-17 and 3-48. l System battery back-up; refer to page 2-17, l External music source; refer to pages 2-7 and 3-49. l External paging speaker equipment; refer to pages 2-7 and 3-50. 1.4 A wide variety of station instruments are avail- able on the GMX-48 System, including: l 24-Line Standard Keysets o 24-Line Display Keysets l Doorbox; refer to page 2-18. 0 Voice mail equipment; refer to page 2-18. l Facsimile (FAX) machine; refer to page 2-18. NO. OF MODULES NO. OF C.O. LINE NO. OF KEYSET CIR- NO. OF SINGLE-LINE TOTAL CON- INSTALLED ClRCUlTS AVAILABLE WITS AVAILABI F” CIRCUITS AVAILABLE FIGURATION KCB Only 4 8 0 4x8 - Plus 1 EXP 8 16 0 8x16 - Plus 2 EXPs 12 24 0 12x24 - Plus 3 EXPs 16 32 0 16 x 32 - Plus 4 EXPs 20 40 0 20x40 - Plus 5 EXPs 24 48 0 24 x 48 - Plus 1 APM 4 8 6 4x14 - Plus 2 APMs 4 8 12 4 x 20 - Plus 1 EXP & 1 APM a 16 6 8 x 22 - Plus 1 W & 2 APMs 8 16 12 8 x28 - Plus 2 Ws & 1 APM 12 24 6 12x30 - Plus 2 EXPs & 2 APMs 12 24 12 12 36 x - Plus 3 EXPs & 1 APM 16 32 6 16 x 38 - Plus 3 EXPs & 2 APMs 16 32 12 . 16 x 44 -PPlus4EXPs&lAPM 20 40 6 20 x 46 * To equip a keyset with a secondary voice path (for off-hook voice announce and/or simultaneous voice/data communication), two keyset circuits are required. Also, each DSSIBLF Unit installed requires a separate keyset circuit. Page 2-2
INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE SPECIFICATIONS Issue 2, May 1990 2. CABLING AND THE MAIN DISTRIBUTION FRAME (MDF) 2.1 Connections between the central office (C.O.) lines, station instruments, external equipment, and KSU are made at the MDF. The MDF is made up of industry-standard, 66Ml-50-type terminal blocks and, depending on the type of installation, modular jack assemblies. Bridging clips are used on all termi- nal blocks to complete the connections. Blocks used include: 1 block for C.O. line and C.O. circuit terminations (unless the telephone company has terminated the C.O. lines on RI-type jacks, then a C.O. block is not necessary). l-6 blocks for station cabling and station circuit terminations. 2.2 The KSU and power supply are also mounted on the MDF backboard. The MDF requires at least a 4 x 6-foot (1.2 x 1.8-meter), %-inch plywood backboard. This allows room to mount the KSU, power supply, terminal blocks, modular jack assemblies (if needed), and any optional peripheral equipment. A. STATION CONNECTIONS 2.3 For each keyset, DSS/BLF Unit, and single-line device, three-pair cable is run from the station loca- tion to the MDF. All station cables are terminated on blocks at the MDF and on six-conductor modular jack assemblies at the station locations. NOTE: It is recommended that three-pair cable and six-conductor modular jacks be used for all station connections. This allows the various types of station instruments to be easily interchanged, if necessary. However, if desired, single-line devices can be in- stalled using one-pair cable and four-conductor mod- ular jacks. 2.4 Industry-standard, 25-pair telephone cable is used to connect. station blocks to the KSU. Female 50-pin amphenol-type connectors on the cables at- tach to the male connectors on the KSU Control Board (KCB), Expansion Modules (EXPs), and Ac- cessory Port Modules (APMs). 2.5 If desired, the system can be configured to allow 24-line keyset users to receive off-hook voice an- nounce (OHVA) calls and/or to use the sirmAth_neous voice/data communication feature. To accomplish this, the keyset is installed on an odd-numbered sta- tion circuit (e.g., 1.1, 1.3, 1.5, etc.). Then, the follow- ing even-numbered circuit (1.2, 1.4, 1.6, etc.) is used to create a secondary voice path. NOTE: To simply place OHVA calls (from both 1Zline and 24-line keysets) or to use the standard data communication feature (24-line keysets only), no spe- cial secondary voice path installation is necessary. However, for data communication (whether standard or simultaneous voice/data), 24-line keysets must be equipped with optional Data Port Modules. 1Zline keysets cannot have Data Port Modules installed. . 2.6 Although secondary voice path-equipped key- sets are installed with three-pair cable as usual, the configuration at the station block is somewhat differ- ent than the standard configuration. In standard in- stallations, the KSU uses the first pair for power and ground, the second pair for the primary voice path, and the third pair for auxiliary transmissions between the keyset and the KSU. To create a secondary voice path, the auxiliary pair is not used; instead, the prima- ry pair from the following even-numbered circuit is used in its place. (Refer to INSTALLATION, pages 3-14 to 3-16, for complete instructions.) 2.7 Because the primary path of the even-num- bered circuit is used to create a secondary voice path for the preceding odd-numbered circuit, the even- numbered circuit cannot have a station instrument in- stalled on it. The maximum number of 24-line keysets that may be equipped with a secondary voice path is 24 (2 circuits x 24 keysets = the 48 circuit capacity of the system). 2.8 Each secondary voice path keyset must have its corresponding station circuit strap in the KSU set in the OHVA position. When a secondary voice path is not installed, the strap must be in the NORM posi- tion. Also, each secondary voice path circuit must be designated as such in database programming. (See PROGRAMMING, page 5-49, for details.) Page 2-3
SPECIFICATIONS Issue 2, May 1990 ‘. INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE B. C.O. LINE CONNECTIONS 0 2.9 The C.O. lines are terminated on telephone company RJ-type jacks or on an RJ-type block, as re- quired by FCC regulations. Three methods of con- necting C.O. lines to the KSU are outlined in the INSTALLATION section, along with details con- cerning necessary supplies. Briefly, the three meth- ods are as follows: l If the C.O. lines are terminated on RJ-type jacks mounted near the MDF: Using two-pair mod-to- mod line cords, every two C.O. lines are con- nected directly to the corresponding C.O. jack on the KSU. 2.10 It is recommended that gas discharge tubes with silicon avalanche suppressors be installed on the C.O. lines and OPX lines for lightning protection. Also, in areas with frequent occurrences of lightning, it is recommended that the cable between the tele- phone company termination and the gas discharge tubes be at least 75 feet long (the cable may be coiled up if desired). CAUTION If the above installation method is used, the light- ning protection procedures outlined in paragraph 2.10 cannot be followed. For lightning protection capability, use one of the following installation methods instead. l If the C.O. lines are terminated on RJ-type jacks mounted away from the MDF: Using two-pair mod-to-mod line cords, every two CO. lines are first terminated from the RJ-type jacks onto four- conductor modular jack assemblies mounted next to the RJ-type jacks. Then, using standard two- pair cable, the C.O. lines are extended to modular jack assemblies mounted at the MDE Finally, two-pair mod-to-mod line cords complete the connection from the modular jack assemblies to the corresponding C.O. jacks on the KSU. For a diagram of this method, see Figure 3-10 on page 3-22. If the C.O. lines are terminated on an RJ-type block A 25-pair cable is used to connect the RJ- type block to a C.O. terminal block on the MDF. Then, for every two C.O. lines, two-pair cable (or cross-connect cable) is connected from the CO. block to four-conductor modular jack assemblies mounted next to the KSU. Finally, two-pair mod- to-mod line cords complete the connection from the modular jack assemblies to the corresponding C.O. jacks on the KSU. For a diagram of this method, see Figure 3-12 on page 3-23. 2.11 The GMX-48 System has the following.C.0. line characteristics: CHARACTERISTICS Loss from: CO to keyset CO to single-line set co to co Ringer equivalence Ringing voltage Ring frequency Loop current OdB (@lkHz, 0 ft.) OdB (@lkHz, 0 ft.) 2dB (@lkHz, 0 ft.) 0.8B 40VRMS minimum 17-63Hz 20mA minimum PROTECTION ?ip-to-ring 390V transient Page 2-4
INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE SPECIFICATIONS Issue 2, May 1990 3. KEY SERVICE UNIT (KSU) A. KSU DESCRIPTION 3.1 The KSU performs the switching activities for the system, detects incoming calls, processes data- controlled features, and controls the interaction of station instruments, C.O. lines, and intercom chan- nels. The KSU can house up to five modules. All five can be Expansion Modules (EXPs), or up to two of the five can be Accessory Port Modules (APMs). For a drawing of the KSU, see Figure 2-2 on page 2-21. KSU dimensions are as follows: WITHOUT ANY MODUI FS INSTALLED Height 20.0 in. (50.8 cm.) Width 13.5 in. (34.3 cm.) Depth 2.0 in. (5.1 cm.) Weight 11.0 lbs. (5.0 kg.) WITH FIVE MODULFS INSTALLED Height 20.0 in. (50.8 cm.) Width 13.5 in. (34.3 cm.) Depth 8.0 in. (20.3 cm.) Weight 41.0 lbs. (18.5 kg.) 3.2 The system is a microprocessor-controlled, space-division system. Memory includes up to 384K bytes ROM and up to 112K bytes RAM. Each keyset contains a microprocessor that communicates with the microprocessor in the KSU. 3.3 Without any EXPs or APMs, the KSU can be in- stalled with up to four C.O. lines and up to eight key- sets and/or DSS/BLF Units. For increased capacity, as many as five EXPs may be attached to the main KSU Control Board (KCB) unit. Each EXP can have up to four C.O. lines and up to eight keysets or DSS/ BLF Units connected to it. A fully loaded system can have 24 C.O. lines and 48 keysets. Possible system configurations are are shown in the chart on page 2-2. 3.4 For single-line device capability (i.e., single-line sets, playback devices, voice mail units, FAX ma- chines, etc.), up to two APMs can be attached to the KCB. However, for each APM installed, one less EXP can be installed. No matter what the combina- tion, there can be no more than five modules attached to the KCB. Each APM can have up to six single-line devices connected to it. 3.5 The system has 22 voice channels, one paging channel, and one background music channel. The 22 voice channels are available for C.O. calls and up to six intercom calls on a first come, first served basis. If fewer than 16 C.O. lines are installed, more voice channels are available for intercom calls (one channel for each line not installed). In the rare occurrence . that all voice channels are in use, a user attempting to place a call will hear reorder tones and may try again. Detailed traffic analysis indicates that if this occurs, a voice channel will likely be available on the second at- % . tempt. 3.6 Each EXP and APM has address selection switches or straps that are used to indicate the posi- tion of the modules in relation to the KSU. These switches/straps must be set correctly in order for the system to operate properly. To aid in proper installa- tion, these settings are silkscreened directly on the modules. ’ 3.7 A ground lug on the bottom edge of the KSU is used to connect the KSU to an earth ground. Refer to INSTALLATION, page 3-26, for details. 3.8 The KSU and the station instruments require the following environmental conditions: PEQUIRF~MFNTS JN OPERATION IN STORAGE Temperature - 32’ to 104” F -40” to 185” F KSU 0” to 40” c -40’ to 85’ C Temperature - 32” to 113” F -40” to 185” F Station Instruments OD to 45O c -40” to 85” c Relative Humidity 5% to 95% 5% to 95% (Non-Condensing) Altitude up to 10,000 ft. up to 40,000 ft. (3,048 m.) (12,192 m.) NOTE: It is recommended that the maximum operat- ing temperatures (as stated above) never be exceeded. Therefore, when installing the KSU and the station instruments, allow a sufficient margin for error in case of air conditioning failure, routine mechanical maintenance, plant shutdown, etc. As a general guideline, if the conditions are suitable for office per- sonnel, they are also suitable for KSU and station instrument operation. A properly controlled environ- ment will help to extend the operating life of the equipment. Page 2-5
SPECIFICATIONS Issue 2, May 1990 ‘.. INTER-TEL PRACTICES GMX-48 INSTALLATION & MAINTENANCE B. SYSTEM POWER SUPPLY 3.9 The 662.0600,662.0200, or 662.0100 system pow- er supply is installed to provide power to the KSLJ and to all stations. The power supply must have an iso- lated, dedicated, 105125VAC, 15A, 57-63H2, single- phase commercial power source (for details, refer to the first NOTE on page 3-3 of the INSTALLATION section). 3.10 The smaller power supply (662.0600) may be used on systems with up to one module installed. The medium-sized power supply (662.0200) may be used on systems with up to two modules installed. For sys- tems with three or more modules installed, the large power supply (662.0100) must be used. 3.11 Maximum power outputs and fuse values for each power supply are shown below. 662.0600 662.0200 For system with up to For systems with up to one module: two modules: + SVDC, 700mA (logic) + SVDC, 800mA (logic) + 12VDC, 275mA (RS-232-C, + 12VDC, 400mA (RS-232-C, audio) audio) -lZVDC, 25mA (RS-232-C) -12VDC, 25mA (RS-232-C) + 30VDC, 2.25A (keyset) + 3OVDC, 3.25A (keyset) AC breaker - IlSVAC, not replaceable 662.01 For all systems, including those with three or more modules: + SVDC, 1.25A (logic) + 12VDC, 900mA (RS-232-C, audio) -12VDC, 25mA (RS-232-C) + 3OVDC, 8.OA (keyset) AC breaker - IISVAC, not replaceable 3.12 To provide back-up power in the event of a power failure or brownout condition, the power sup- plies can have optional battery back-up using the unit designed for the system (part no. 662.0110) or using a customer-provided uninterruptable power supply (UPS) unit or standby power supply (SPS) unit. Refer to page 2-17 for more information. 3.13 To reduce the effects of AC voltage surges and spikes that may cause system malfunctions, false log- ic, and/or damage to the electronic components, it is recommended that a surge/spike protector be in- stalled. 3.14 Check the manufacturer’s specifications to en- sure that the surge/spike protector meets the follow- ing requirements: Clamp voltage transients at 300VDC within 5 nanoseconds when exposed to waveforms as de- scribed in the ANSI/IEEE Standard C62.41-1980 (IEEE 587). l Reduce RFI/EMI noise by at least 20dB at fre- quencies between 5kHz and 30MHz. Page 2-6