Comdial Dxp Plus Instructions Manual
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4. Identify the expansion cabinet slots where you will install the DXPT1 boards and the primary and secondary (if available) CO line supplier. With this knowledge, designate one DXPT1 board as primary and another DXPT1 board as secondary by placing straps on the services board and setting DIP switches on the expansion cabinet interface board. (a)If you install one DXPT1 board in an expansion cabinet, you must strap one pin-pair (J–M) on the services board’s PRIMARY strap block. This strap designates the expansion cabinet where you have installed the board. You must also close a DIP switch in switch bank A on the expansion cabinet’s interface board to designate the expansion cabinet slot where you installed the DXPT1 board. Example:If you install the DXPT1 board in universal slot 2 of the upper expansion cabinet, strap pin-pair J on the PRIMARY strap block, and close SWA–2 on the upper expansion cabinet’s interface board. (b)If you install two or more DXPT1 boards in an expansion cabinet, you must designate one board as the primary board and another as the secondary board. After you have made these designations, you must strap one pin-pair (J–M) on the services board’s PRIMARY strap block and one pin-pair (J–M) on its SECONDARY strap block to designate the expansion cabinet where you have installed the primary and secondary boards. You must also close a DIP switch on switch bank A and another on switch bank B on the expansion cabinet’s interface board to designate the expansion cabinet slots where you installed the primary and secondary DXPT1 boards. Do this same procedure if you use both expansion cabinets. Example:If you install two DXPT1 boards in universal slots two and three in the upper expansion cabinet and you designate these boards primary and secondary respectively, you must strap pin-pair J on the PRIMARY strap block and strap pin-pair K on the SECONDARY strap block. You also must close SWA–2 and SWB–3 on the upper expansion cabinet’s interface board. 5. If the system requiresDXPT1 boards in both main and expansion cabinets, identify the cabinet slots where you will install the DXPT1 boards and the primary and secondary (if available) CO line supplier. With this knowledge, designate any one DXPT1 board as primary and any other DXPT1 board as secondary by placing straps on the services board and setting DIP switches on the expansion cabinet interface board. You must either strap one pin-pair (A–M) on the services board’s PRIMARY strap block or strap one pin-pair (A–M) on its SECONDARY strap block. The DXPT1 board designation of primary or secondary and the cabinet you use for its installation determines which services board pin-pair you use. You must also close a DIP switch (SWA or SWB, 1–11) on the appropriate expansion cabinet’s interface board to designate the expansion cabinet slot where you installed the opposite DXPT1 board. Example:If you designate the DXPT1 board that you install in universal slot 2 of the main cabinet as the primary board, strap pin-pair B on the services board PRIMARY strap block. If you designate the DXPT1 board that you install in universal slot 2 in the upper expansion slot as the secondary board, strap pin-pair J on the services board SECONDARY strap block, and close SWA–2 on the upper expansion cabinet’s interface board. Installing The DXPT1 Line Board IMI89–193 Installing The DXPT1 Line Board – 21
Services Board Primary Clock Strapping Block Strapping Pairs A B C D E F G H I J K L M Secondary Clock Strapping Block PLUS009 J6 J7 Upper Cabinet Lower Cabinet Locating The Services Board Strapping Blocks IMI89–193 Installing The DXPT1 Line Board 22 – Installing The DXPT1 Line Board
Open OpenClosed Closed Switch A Expansion Cabinet Slot Locations Switch B Expansion Cabinet Slot Locations Expansion Cabinet Interface Board 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 89 10 11 12 9 10 11 12 PLUS010 SWA SWB Note:SWA-12 and SWB-12 are not used on Interface 2 (upper cabinet). SWA-11/12 and SWB-11/12 are not used on Interface 3 (lower cabinet).SWA and SWB switches not in use must be in off (open) position! Locating The Interface Board DIP Switches Installing The DXPT1 Line Board IMI89–193 Installing The DXPT1 Line Board – 23
5.2 Installing The Services Board Assembly 1. With your static discharge wrist strap still properly installed, install the services board in the main cabinet. 2. If the installation includes a DXOPT–SYN card, make sure the lower (larger) slide switch on the front edge of the card is in the upAUTOposition. Leave the upper (smaller) switch in either position as it has no effect when the automatic mode is selected. 3. Orient the services board assembly with its top and bottom guides in main cabinet board cage, and press the board firmly until its board edge connection properly mates with the connector on cabinet’s backplane. CAUTION When pressing circuit boards into place, press them only at the extractor lever locations. If you apply pressure at other locations you may damage the board assembly. 4. Make a final inspection to ensure that the board assembly is oriented correctly and mated properly. 5. Install and tighten the supplied screws to secure the board assembly to the board cage. 6. If applicable, plug the power cable from the optional external battery assembly into the DXP power supply. 7. Connect the AC power cord to the AC wall outlet and turn the power switch on. If no alarms are on (red LEDs), and at least one of the greenPRIorSECLEDs is lit, replace the cabinet’s front panel; otherwise, troubleshoot the installation for errors. IMI89–193 Installing The DXPT1 Line Board 24 – Installing The DXPT1 Line Board
Static Discharge Wrist Strap PRI LED SEC LED AUTO MANUAL SWITCH (Set to AUTO Position) Services Board PAGE BGM MOH RELAY 1 RELAY 2 RELAY 3 RELAY 4 COMDIAL OPBD3 OUTMAIN CABINET BATTERYOPBD2 ON =OK STATUSOPBD1 PLUS006 PRI PRISEC SEC UNLOCKED SOURCEDXOPT SYN MODE MANUAL AUTOMAN Installing The Services Board Assembly Installing The DXPT1 Line Board IMI89–193 Installing The DXPT1 Line Board – 25
6.0 Understanding The T1 Alarms And Indicators Most of the T1 alarms and indicators (LEDs) are located on the front-edge panel of the DXPT1 board, while several are located on the front edge of the DXOPT-SYN card. The following sections discuss the alarms and indicators. NOTE:Red /Yellow LEDs, when lit, indicate errors or non-standard configuration for normal operation. Red Alarm (red LED)When this LED indicator is lit, the system cannot establish communications with the network. Yellow Alarm (yellow LED)The yellow alarm is lit whenever the far end has lost synchronization to its incoming signal. In the superframe format, a transmitted yellow alarm has a zero (0) bit in the second bit position of every eighth-bit. In the extended superframe format, a transmitted yellow alarm consists of repeating 16-bit patterns containing eight binary one (1) bits followed by eight binary zero (0) bits on the facility data link. Sync Alarm (red LED)This LED (labeledSYNC LOSS), when lit, indicates that the frame bit in the received data cannot be found. Signal Alarm (red LED)The signal alarm (labeledSIG LOSS) turns on to indicate that the DXP has lost its incoming signal. Blue Alarm (red LED)When this alarm indicator is lit, the alarm indication signal (AIS) consisting of all one (1) bits is being received to indicate that the far end has lost its received signal. The purpose of this signal is to maintain the system clocks during a link failure. Bipolar Alarm (red LED)The system converts the digital bitstream in T1 communications to a bipolar format through a process called alternate mark inversion (AMI). The voltage polarity of the ones pulses (marks) alternates betweenPlusand minus with a zero (space) represented by no pulse. A bipolar violation occurs whenever two successive pulses are of the same polarity. This alarm LED indicates a bipolar violation (BPV) has occurred. It is important to note that BPV errors are not passed through regeneration points. IMI89–193 Installing The DXPT1 Line Board 26 – Installing The DXPT1 Line Board
Cyclic Redundancy Check (red LED)When using the ESF format, the cyclic redundancy check (CRC) indicator lights whenever there is a discrepancy in the check sum received for an incoming frame from the originating system and the locally calculated check sum. This discrepancy indicates a data error in the received frame. The CRC is enabled by DIP switch SW2-4. Slip (red LED)This indicator is turned on whenever a frame slip is detected. This is caused by the transmit clock not being synchronized with the receive clock. Unlock (red LED)The transmit frequency (1.544 Mhz) is not locked with the receive clock when this indicator is lit. B8ZS)/COFA (green LED)This is a dual-purpose indicator. Depending on how you set DIP switch SW2-6, this indicator reports either a change of frame alignment (COFA) at re-synchronization time (default setting) or bipolar 8-zero substitution (B8ZS) code words detected in the received data. RLB, LLB, and PAYL (red LEDs)Whenever a loopback routine is active, either the remote loopback (RLB), local loopback (LLB), or payback loopback (PAYL) mode (selected by DIP switches SW2-7 and SW2-8) is indicated by the appropriate LED being lit. PRI and SEC (green LEDs)ThePRIandSECLEDs on the DXOPT-SYN card light to indicate where the receive clock reference is originating from—the primary or secondary DXPT1 board location. When two or more DXPT1 boards are installed, you make the primary and secondary assignments via jumpers on the the DXAUX board. If only one DXPT1 board is installed, you can set the jumpers so that both LEDs will light. UNLOCKED (red LED)When lit, the Unlocked LED indicates either the DXOPT-SYN card is defective or the receive frequency is out of tolerance (1.544 Mhz±200 Hz). MANUAL (red LED)This LED, when lit, indicates that the manual mode has been selected via the AUTO/MANUALmode switch on the DXOPT-SYN card. When you select the manual mode (normally for maintenance/troubleshooting ), you can select either the primary or secondary timing reference by setting thePRI/SECswitch on the DXOPT-SYN card. For normal operation, select the automatic mode. Do not manually force the clock reference to primary or secondary if the appropriate green LED is not lit. This will cause the VCO oscillator to default to its minimum or maximum tolerance, and the T1 board(s) may not frequency-lock. Installing The DXPT1 Line Board IMI89–193 Installing The DXPT1 Line Board – 27
6.1 Viewing The DXPT1 Board Alarms And Indicators LED*LABELERROR OR STATUS CONDITION WHEN LED IS LIT l(Status) Rapid flash = defective board Steady on = board in wrong slot or board constraints violated Off with repeated five second blink on = normal operation (T1 trunk idle) On with repeated five second blink off = normal operation (T1 trunk busy) lRed Communications with network cannot be established (out-of-service) ¤Yellow Disruption in remote T1 service lSync Loss of sync with the incoming signal lSIG Loss of incoming signal lBlue Alarm indication signal (AIS) being received (indicates loss of signal at far end) lBipolar Bipolar violation detected lCRC Cyclic redundancy check error in incoming frame if SW2-4 is enabled (ESF only) lSLIP Frame slip detected lUnlock Transmit frequency (1.544 MHz) not locked with receive clock ¡B8ZS/COFA B8ZS/COFA (B8ZS zero suppress mode/change of frame alignment) per SW2-6 lRLB Remote loopback active lLLB Local loopback active lPAYL Payload loopback active ¡Diagnostics codes (for factory test only) ¡Diagnostics codes (for factory test only) ¡Diagnostics codes (for factory test only) ¡Diagnostics codes (for factory test only) ¡Diagnostics codes (for factory test only) ¡Diagnostics codes (for factory test only) ¡Diagnostics codes (for factory test only) ¡Diagnostics codes (for factory test only) 6.2 Viewing DXOPT-SYN Synchronization Card Alarms And Indicators LED*LABELERROR OR STATUS CONDITION WHEN LED IS LIT ¡PRI Timing reference is present from the DXPT1 primary board ¡SEC Timing reference is present from the DXPT1 secondary board lUNLOCKED Trouble (defective DXOPT-SYN card or receive frequency out of tolerance (1.544 MHz±200 Hz)) lMANUAL The manual mode is active for selecting the DXPT1 reference NOTE:Red /Yellow LEDs, when lit, indicate errors or non-standard configuration for normal operation. Green LEDs indicate a normal condition. *L E D color legen d l= Red¤= Yellow¡= Green IMI89–193 Installing The DXPT1 Line Board 28 – Installing The DXPT1 Line Board
Services Board Status Red Yellow Sync Signal Blue Bipolar CRC Slip Unlock B8ZS/COFA Remote Loopback Local Loopback Payload Loopback Primary Secondary Unlocked Status Manual DXOPT-SYN Card Diagnostic Switches and LEDs for Factory Use OnlyDXPT1 Board PLUS007 Viewing DXPT1 And DXOPT–SYN Alarms And Indicators Installing The DXPT1 Line Board IMI89–193 Installing The DXPT1 Line Board – 29
7.0 Understanding Installer/User Information Regarding FCC Rules and Regulations This electronic key system complies with Federal Communications Commission (FCC) Rules, Part 68. The FCC registration label on the DXP Plus contains the FCC registration number, the ringer equivalence number, the model number, and the serial number or production date of the system. 7.1 Notification To Telephone Company Unless a telephone operating company provides and installs the system, the telephone operating company which provides the lines must be notified before a connection is made to them. The lines (telephone numbers) involved, the FCC registration number, and the ringer equivalence number must be provided to the telephone company. The FCC registration number and the ringer equivalence number of this equipment are provided on the label attached to the common equipment. The user/installer is required to notify the telephone company when final disconnection of this equipment from the telephone company line occurs. 7.2 Compatibility With Telephone Network When necessary, the telephone operating company provides information on the maximum number of telephones or ringers that can be connected to one line, as well as any other applicable technical information. The telephone operating company can temporarily discontinue service and make changes which could affect the operation of this equipment. They must, however, provide adequate notice, in writing, of any future equipment changes that would make the system incompatible. 7.3 Installation Requirements Connection of the electronic key system to the telephone lines must be through a universal service order code (USOC) outlet jack supplied by the telephone operating company. If the installation site does not have the proper outlet, ask the telephone company business office to install one. The correct outlet jack for this system is either a type RJ21X or type RJ14C. 7.4 Party Lines And Coin Lines Local telephone company regulations may not permit connections to party lines and coin lines by anyone except the telephone operating company. 7.5 Troubleshooting If a service problem occurs, first try to determine if the trouble is in the on-site system or in the telephone company equipment. Disconnect all equipment not owned by the telephone company. If this corrects the problem, the faulty equipment must not be reconnected to the telephone line until the problem has been corrected. Any trouble that causes improper operation of the telephone network may require the telephone company to discontinue service to the trouble site after they notify the user of the reason. 7.6 Repair Authorization FCC regulations do not permit repair of customer owned equipment by anyone except the manufacturer, their authorized agent, or others who might be authorized by the FCC. However, routine repairs can be made according to the maintenance instructions in this publication, provided that all FCC restrictions are obeyed. IMI89–193 Installing The DXPT1 Line Board 30 – Installing The DXPT1 Line Board