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Case Communications 3200 Operation Manual

Digital multiplexer
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X723-300151
Unit 15, Riverside Business Centre, Victoria Street, High Wycombe, Bucks HP11 2LT
Web:
www.casecomms.com
Tel (UK): 08700 263 740
Fax (UK): 08700 263 741
3200 Digital Multiplexer
Operation Manual
© Case Communications Ltd 1997
0-1
Email:
sales@casecomms.com
Tel (International):
Fax (International): +44 (0) 1494 833 741
+44 (0) 1494 833 740
Issue 2

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  • Page 1 3200 Digital Multiplexer Operation Manual © Case Communications Ltd 1997 X723-300151 Issue 2 Unit 15, Riverside Business Centre, Victoria Street, High Wycombe, Bucks HP11 2LT Web: www.casecomms.com Email: sales@casecomms.com Tel (UK): 08700 263 740 Tel (International): +44 (0) 1494 833 740...
  • Page 2 Case Communications Limited has made all reasonable efforts to ensure the accuracy of the content of this document but the information contained herein does not constitute a warranty of performance of the equipment and/or software described and no specifications given form part of any contract.
  • Page 3 The approval number for the 3200 multiplexer is NS/3660/12/H/452538. The 3200 equipment is approved for indirect connection to the PSN via the 4 wire E&M (SSDC5) PABX tie line ports and G.703 2048 kbit/s PABX ports and for direct connection to G.703 2048kbit/s and X.21 Nx64kbit/s 'Private circuits' subject to the following conditions:- 1) WARNING.
  • Page 4 X723-300151 Issue 2...

  • Page 5: Table Of Contents

    Contents Equipment Detail General Description 3200 Facilities 1.2.1 Control of the 3200 1.2.2 Control Terminal Operating Modes 1.2.3 Configuration 1.2.4 Fault Reporting 1-11 1.2.5 Real Time Clock 1-12 1.2.6 Maintenance Facilities 1-12 Mechanical Description 1-13 Specifications 1-16 1.4.1 Common Equipment 1-16 1.4.2...
  • Page 6 Commissioning 2-11 2.3.1 Link and Switch Settings 2-11 2.3.2 Redundant System Control Card 2-12 2.3.3 Switch on Procedures 2-15 2.3.4 Initial Multiplexer Set-up 2-16 2.3.5 Alarm Indicators 2-16 Dual Line Interface Unit General 3.1.1 TS0 'Not Frame Word' Routing 3.1.2 Clock Recovery and Selection 3.1.3 Jitter Attenuation...
  • Page 7 System Mode Menu 5.3.1 Brief and Verbose Mode Selection 5.3.2 Echo and Noecho Selection 5.3.3 Control Terminal Configuration 5.3.4 Install Menu. E PROM Programming 5.3.5 Security Password Modification 5-12 Configuration Menu 5-13 5.4.1 Checking and Running Channel Configurations 5-13 5.4.2 Editing and Displaying Channel Configurations 5-13 5.4.3...
  • Page 8 6.1.7 Statistical Reports Maintenance Facilities 6-11 6.2.1 Current Status Monitoring 6-12 6.2.2 Setting Data and Signalling 6-13 6.2.3 Displaying Data, Signalling and Peak Codes 6-14 6.2.4 Loops - Setting and Clearing 6-14 6.2.5 Running Self Test 6-17 6.2.6 Alarm Relay Setting and Clearing 6-18 6.2.7 System LED Test...
  • Page 9 Figures Typical System Block Diagram Typical Multipoint Configuration 1-11 Front View of the 3200 Chassis (Typical Configuration) 1-14 Rear View of the 3200 Chassis 1-15 External Ringing Supply Connections Ringing Voltage Backplane Links 2-10 Management Patching Block Diagram Network Management Patchfield Example...
  • Page 10 X723-300151 0-10 Issue 2...

  • Page 11: Equipment Detail

    'Smart' interface option provided by the system control card. The 2048kbit/s PCM line signal interfaces to a Dual LIU in the 3200. This card can operate as either a Smart channel card when fitted in Port 3 or...
  • Page 12 In this case, they have 32 timeslots available for cross connection at the system controller. Port 3 has seven physical card slots in a 3200. Port 3 has 1 x 32 timeslot backplane bus allocated to it which is referred to as P3 for configuration purposes.
  • Page 13 Details of these modules can be found in the relevant Technical manual for the FOLD. A Series 3000 multiplexer power supply unit is required to power the 3200 chassis. This is described in Chapter 8 of this manual.

  • Page 14: Typical System Block Diagram

    7 CHAN CARD SLOTS PORT 3 Timeslots PCM 1 PCM 1 CROSS CONNECT PORT 1 PORT 2 SWITCH PCM 2 PCM 2 Timeslots 6 CHAN CARD SLOTS PORT 4 Figure 1-1 Typical System Block Diagram X723-300151 Issue 2...

  • Page 15: 3200 Facilities

    Firmware level is changed, the contents of the RAM may be lost. 1.2.2 Control Terminal Operating Modes The 3200 may be set to operate with a wide range of RS-232 terminals e.g. Wyse 50 compatible VDUs, Teletypes, Personal Computers etc. A Brief and Verbose operating mode is available.

  • Page 16: Configuration

    1.2.3.2 Equipment Map A feature of the 3200 is the 'Equipment map'. This is provided to allow the equipment to register which channel cards are fitted. In addition, the equipment map is used to raise an alarm if a mapped channel card is removed or replaced with an incompatible card.
  • Page 17 1.2.3.3 Dual LIU Configuration Options When fitted in port 1 or 2, the Dual LIU is configured from the channel configuration options. The following are selectable for each PCM line: Multipoint mode: when selected, timeslots are connected directly between the 2 line interfaces on the dual LIU, by-passing the cross-connection of the system controller.
  • Page 18 this does not affect the detection of 1 in 10 error rate required for line service monitoring. 1.2.3.4 Synchronisation Options The Series 3000 can be synchronised to a 2MHz or two 8KHz, known as 8k1 and 8k2, internal clock busses which are generated by certain channel cards by recovering a phase locked clock from external interfaces.
  • Page 19 Smart cards support 2 or 4 configurations. The channel configuration maps which configuration any individual smart card will run for each of the 3200 configurations. 1.2.3.10 Fixed Codes Fixed codes are used when cross-connection of data and signalling is not required or not possible e.g.
  • Page 20 Cross-connection modes supported are: Simplex: for uni-directional and broadcast data. Duplex: for bi-directional data. Multipoint: for point to multipoint services. To 'undo' a cross-connection it is necessary to allocate fixed data to the outgoing timeslot. If the connection was in duplex it is necessary to individually allocate fixed data to each outgoing timeslot, this is because a duplex connection, for example P3, TS 1 to P4, TS2 sets up 2 simplex connections for the two outgoing timeslots, P3 TS1 to P4, TS2 and P4 TS2...

  • Page 21: Fault Reporting

    Figure 1-2 Typical Multipoint Configuration 1.2.4 Fault Reporting The 3200 has comprehensive fault reporting facilities. All faults are logged as messages in a fault store (capable of storing the last 64 faults) to show the fault history, as well as being held in an active faults list to show current faults.

  • Page 22: Real Time Clock

    1.2.5 Real Time Clock The 3200 is equipped with a Real Time Clock. This is used to time and date stamp fault reports and also to log any messages received from the NCS.

  • Page 23: Mechanical Description

    CCITT. X.150 1.3 Mechanical Description The 3200 is housed in a 19 inch 6RU chassis assembly. The chassis is fitted with a front panel which is designed to give protection against electrostatic discharge and should be fitted at all times when the equipment is in service.

  • Page 24: Front View Of The 3200 Chassis (Typical Configuration)

    CHANNEL CARD PORT 3C CHANNEL CARD PORT 3B CHANNEL CARD PORT 3A DUAL LIU PORT 2 DUAL LIU PORT 1 SYSTEM CONTROL (Main) SYSTEM CONTROL (Standby) Figure 1-3 Front View of the 3200 Chassis (Typical Configuration) X723-300151 1-14 Issue 2...

  • Page 25: Rear View Of The 3200 Chassis

    Figure 1-4 Rear View of the 3200 Chassis X723-300151 1-15 Issue 2...

  • Page 26: Specifications

    Power is supplied to the chassis via a flying lead and this connects to the 3000 3RU power shelf mounted either above or below the 3200 chassis. A terminal block is fitted to this panel for the connection of an external ringing supply (See Section 2.2.9).

  • Page 27: Dual Liu Line Signal Characteristics

    Frequency (Hz) Power Consumption The unit is powered by the 3000 power supply shelf mounted external to the 3200 chassis. See Chapter 8 of this manual for full details. One System Controller with one Power Supply Unit. 30 Watts Two System Controllers with one Power Supply Unit.
  • Page 28 Service: Isolated changeover relay contacts System: Isolated changeover relay contacts Alarm contact rating 1A @ 50VDC (Resistive) 50VA External Status Inputs: 5 external status inputs are provided: Characteristics: General purpose inputs Active: -60VDC < input voltage < 0.8VDC (Generally 0V) Inactive: 1VDC <...
  • Page 29 Network Port: Four V.28 inputs (9 pin D-type connector) Four V.28 outputs Gain The gain through the system to or from the channel interface backplane connector for a channel containing a voice encoded signal is fixed at 1. Refer to the relevant VF channel card manual for gain contributions attributable to the channel card.
  • Page 30 Delay The delay through the system may be calculated from the following diagram:- INPUT LINE INTERFACE OUTPUT LINE INTERFACE 2048 kbit/s 2048 kbit/s Min 12 µs 9 µs Typ 98 µs Max 184 µs DUAL LIU Port 3/4 Port 3/4 Only Only DTE241...

  • Page 31: Product Codes

    C to +50 Humidity: 5 to 95% non condensing 1.5 Product Codes The following code numbers are applicable to the 3200 equipment: 3200/002: 3200 Multiplexer complete with system control card and alarm board DTE221: System Control Unit(added to 3200/002 makes unit redundant...
  • Page 32 X723-300151 1-22 Issue 2...

  • Page 33: Installation And Commissioning

    Remote operation of the 3200 is also possible and this is covered under Remote Control in Section 5.5. On power up, if configured for local control, the 3200 will output Self Test information messages then a prompt and wait for the user input line.

  • Page 34: Modes Of Operation

    2.1.1 Modes of Operation The 3200 local control system can operate in four modes, 'Brief' or 'Verbose' and 'Echo' or 'No Echo'. On initial power up the operating mode will default to the 'Verbose' + 'Echo' mode.

  • Page 35: Special Input Control Characters

    'Esc' will always insert a CRLF and the 3200 will prompt for another input line. This character is primarily intended for computer control of the unit, its function is similar to 'Esc' but the root menu becomes the current menu.

  • Page 36: Installation

    3200 chassis. When using a power shelf configured for redundant PSU operation, it is recommended that a 1RU space is maintained between the 3200 and the power shelf, this is to aid cooling by improving air circulation within the rack.

  • Page 37: Power Connections And Earth Bonding

    2.2.3 Power Connections and Earth Bonding The 3200 should be wired to the power shelf using the flying lead protruding from the rear of the unit. This lead will connect directly to the socket situated on the rear of the power supply shelf. The power supply shelf may be situated above or below the 3200.
  • Page 38 Normally Closed (N/C) is the de-energised/alarm state. Table 2-1 Alarm Connector Pin Connections PSU A and B fail inputs should be connected to the power shelf when configured for redundant PSU operation as follows: 3200 37-way Power unit 9-way D-type Connector D-type Connector...

  • Page 39: Pcm And G.703 Clock Connections

    2.2.5 PCM and G.703 Clock Connections The Dual LIU utilises either the DT315 or DT316 I/O adaptor for interfacing to 75 or 120 ohm lines respectively. These plug into the I/O connectors shown in Figure 1-3. The DT315 has 75 ohm BNC unbalanced connectors, with the 'screen' of the transmit connector earthed by mechanically securing it to the body of the I/O adaptor.

  • Page 40: Network Management Connections

    This adaptor provides additional screening and must be used where compliance to EMC specifications are required. The pin connections are shown in the relevant channel card manual. 2.2.7 Network Management Connections Network management is connected to the unit via a 9-way D-type socket. This port uses V.28 signal levels.

  • Page 41: Ringing Voltage Connections

    The ringing generator card supplies ringing voltage for up to ten telephones of REN = 1. Ringing generators cannot be paralleled to increase output drive, therefore the 3200 backplane is split into 4 sections to allow more than one ringer to be fitted if required, e.g. chassis equipped with more than 10 subscriber circuits.

  • Page 42: Ringing Voltage Backplane Links

    The RS terminal is used to indicate when ringing voltage is required to switch on an external ringer, it is an open collector O/P. When RS = 0V (battery +ve) then ringing voltage should be present on RV and RR. The RS terminal does not have to be connected, ringing voltage may be present continuously across the RV and RR terminals.

  • Page 43: Commissioning

    2.3 Commissioning 2.3.1 Link and Switch Settings The 3200 may be controlled via its local port, a DCE V.24 RS-232 serial interface. This port is configured by switch SW1 on the front of the system control card DTE221. Switch SW1 is read at power up and periodically to allow configuration of the local port to be modified once powered up.

  • Page 44: Redundant System Control Card

    A second (standby) system control card may be fitted in the far left hand (S<SYS) position of the 3200 to provide backup for the main system controller should it fail. LK3 on both cards must be in positions 1-2 if this facility is required.
  • Page 45 Standby Operation When the standby system controller has received all configuration information required to take control, it will configure itself and then wait for control. All configuration and set-up data will be passed to the standby system controller except for:- Maintenance test information (loops, and set data) Network messages iii) Fault logging information...
  • Page 46 Inhibit Command (!MSRI) This command is available to inhibit fault reporting and communication between the off-line and on-line controllers. This facility MUST be used before removing an off-line system controller from the multiplexer. If this facility is not used, removal of an off-line system controller may result in corruption of data through the multiplexer.

  • Page 47: Switch On Procedures

    Single System Controller operation: Upon power up the 3200 will carry out a full self test. Dual System Controller operation: Upon power up the main system controller will carry out a full self test. If any part of this self test fails the Standby system controller will take control.

  • Page 48: Initial Multiplexer Set-Up

    PCM configuration faults. 2.3.5 Alarm Indicators The 3200 has 9 LEDs which are situated on the front of the system controller PCB. The LEDs indicate any alarm conditions that occur on the unit. The main functions are listed below with a detailed function for each LED contained in the fault chart in Section 6.1.1.
  • Page 49 System Alarm Power/Active All the LEDs are red except for the Power/Active LED which is green. This LED will be on continuously when the system controller is active, and will flash if the system controller is the standby card in redundant operation when equipped.
  • Page 50 X723-300151 2-18 Issue 2...

  • Page 51: Dual Line Interface Unit

    Dual Line Interface Unit 3.1 General Dual Line Interface Units (DTE241) installed in ports 1 and 2 must be fitted with DT986/2 or later firmware. When fitted to port 1 or port 2, the configuration of the Dual LIU is transparent to the user. The Dual LIU will be listed as a DT310 (base card) in the Equipment map.
  • Page 52 The incoming NFW from the relevant line is written Mode 1 (Default) to the relevant patchfield with the Remote Alarm bit set to a 1. The outgoing NFW is read from the patchfield and the Remote Alarm bit will be set to a 0. This allows the use of patchfield 995/D This is the same as mode 1 except that the Remote Mode 2...

  • Page 53: Clock Recovery And Selection

    The following options will be presented whilst configuring each mode of operation for the Dual LIU, to enable the TS0 routing options to be selected. The preceding display will depend upon the LIU mode selected. 1 Normal 2 Normal plus Remote Alarm 3 L1 to TS0 4 L2 to TS0 5 L1 to TS0, L2 to TS1...

  • Page 54: Clock Output

    3.1.5 G.703 Clock Output The timing for the G.703 clock output is sourced from the system clock (PLL) except under bypass conditions when it is sourced from the G.703 clock input. The G.703 clock output can be configured to be enabled or disabled when the multipexer is free running.

  • Page 55: Dual Liu Adaptors

    The miscellaneous LED for each line will illuminate for the following reasons: PCM Loss Frame Sync Loss Error Rate 10 Frame Slip Multiframe Sync Loss TS16 A.I.S Low Error Rate Line Output Fail Local Loop Incoming Loop Both miscellaneous LEDs will illuminate for the following reasons. System Restart Un-configured Config Rx Fail (Transfer of data from the System Controller)

  • Page 56: Dt316 120 Ohm I/O Adaptor

    3.2.2 DT316 120 ohm I/O Adaptor This adaptor uses three 9-way D-type sockets for connection to the two PCM lines and the G.703 clock. The connections are balanced and are as follows: PCM connectors PCM Out 5 and 9 PCM In 1 and 6 Ground G.703 Clock connector...

  • Page 57: Management Configuration

    The multiplexer may be controlled either locally by a terminal connected to its local RS-232 port or by a Network Control System (NCS) connected to the V.28 network management port. If the 3200 to which the NCS is connected is fitted with redundant system controllers, alarm panel DT245 must be fitted to allow the NCS to work with the standby controller.

  • Page 58: System Controller Patchfield

    patchfields for LIU to system controller, or LIU to LIU communications. Several LIUs, for example, could broadcast the polling sourced by the system controller patchfield. The response from any of the LIUs will be fed back to the system controller patchfield via a logical ‘ANDing’ arrangement inside the LIU patchfields and a wired OR connection to the Mbus.

  • Page 59: Dual Liu Patchfield

    Appendix A. If access to the Remote Alarm bit 3 is required within the patchfield, the Dual LIU must be fitted with patchfield DT995E. Contact Case Communications for details of this patchfield. Line 1 on the Dual LIU uses management bus lines M1 & M2 for communication with the system controller or other LIUs.

  • Page 60: Examples Of Management Patchfields

    4.4 Examples of Management Patchfields Some examples of possible network management patchfield selections are described and relate to Figure 4-2 and patchfields 990C and 995D. EXAMPLE 1 - SOURCE POLLING This configuration would use system controller patchfield 2 and dual LIU patchfield 2.
  • Page 61 Branch B polling and responses work in a similar way using PCM line 2, management bus line M3 and UART B. EXAMPLE 3 - RECEIVE POLLING AND TRANSMIT ON This configuration would use system controller patchfield 2 and dual LIU patchfield 4.
  • Page 62 end will pass through the Dual LIU to the system controller, via the M1 line and UART A input to the local port. At the Remote end, the system controller will receive data from the relevant Dual LIU's line 1 via the M1 bus. This data will then be used to control the multiplexer via UART A.

  • Page 63: Management Patching Block Diagram

    Figure 4-1 Management Patching Block Diagram X723-300151 Issue 2...

  • Page 64: System Controller Patchfield Dt990C

    PATCH NUMBER DESTINATION UARTC UARTC UARTC UARTC UARTC UARTC UARTC RS232 RS232 RS232 RS232 RS232 RS232 RS232 RS232 UARTC COMi4 COMi4 COMi4 COMi4 COMi1 COMi1 COMi1 COMi1 UARTA COMi2 COMi2 COMi3 COMi3 COMi1 COMi3 UARTB COMi2 COMi4 COMi3 COMi2 COMi2 UARTA COMi3 COMi3...

  • Page 65: Dual Liu Patchfield Dt995D

    LINE 1 - PATCH LINE 2 - PATCH DEST DEST Table 4-2 Dual LIU Patchfield DT995D Notes: A space in the table above indicates a fixed '1' condition Where more than one source is shown these are logically 'ANDed' to the destination.

  • Page 66: Network Management Patchfield Example

    Mux 1 Mux 2 Mux 3 Receive Receive Source Polling and Polling and Polling Terminate Transmit on V.28 N.C.S. Figure 4-2 Network Management Patchfield Example Local Remote Dumb Terminal Figure 4-3 Local/Remote Patchfield Example X723-300151 4-10 Issue 2...

  • Page 67: Multiplexer Configuration

    Multiplexer Configuration 5.1 Menu Tree 5.1.1 Menu Operation Menu selections are accomplished by entering the capital/uppercase letter displayed for the required option and pressing return. The display will pass to the next associated sub menu or prompt for operator input. See Section 2.1 for a full description of control terminal operation.

  • Page 68: Root Menu

    If an incorrect password is entered then the menu will revert to the closed mode. There is no limit to the number of attempts to gain access. () Maint | Fault | mOde | Configure | Time | Remote | Smart | closE > Open mode If the multiplexer is operated in none secured mode (security off) a password is not required and the root menu will remain open.

  • Page 69: Configuration Menu

    5.1.5 Configuration Menu Configure Channels - see details below Current Management line1 Link line2 Status sYnc G.703 Clk o/p List Equipment map Fcode Install Bypass install A II Mode Remove line1 Error iDent line2 line1 cR c4 Channels Current Assigned cct line2 Circuit ctl line1...

  • Page 70: Time Menu

    5.2 Time Menu The multiplexer supports a real time clock. The time menu options provide date entry in the form: day of month, month, year. Using this together with the time data (day, hour, minute) the multiplexer is able to calculate the current week number and provide support for weekly timed event control.
  • Page 71 To set up further timed events, the operator first inserts all of the regular weekly events giving 0 as the week designator. To modify a selected week the operator inserts events specifying the selected week number and normal event data. The inserted event will then only occur within the given week number and run until the next week 0 event or another event for that week.
  • Page 72 Removing Timed Events The operator may delete events by using the 'Remove' menu option and specifying the event number. The specified event will be deleted and all following events re-numbered. A consecutive range of events may be removed by specifying the start and end event. (T) Display | Set | Events >E (TE) List | Insert | Remove | Enable | Disable | Status >R start event, end event >4,7...

  • Page 73: System Mode Menu

    5.3 System Mode Menu 5.3.1 Brief and Verbose Mode Selection The power up state for these options are defined in the 'mOde' 'Install' menu, but can be overridden with this command. Brief mode is intended for test purposes or by an experienced programmer wishing to use a computer to download a configuration through the local port for example.
  • Page 74 5.3.4 Install Menu. E PROM Programming The operator may select a range of modes of operation using the 'Install' menu option. This will show the current setting and present each configurable mode option and allow the operator to change the setting. If no change is required then pressing the Return/Enter key will skip to the next item.
  • Page 75 (O) Verbose | Brief | Echo | Noecho | Terminal | Install * > The modes of operation are stored in an E PROM and the saving action can take up to one minute to complete. The E PROM does not require battery back up and the information will be retained during power off conditions even if the battery is disconnected.
  • Page 76 Redundant Mode Operation This facility must be enabled if a redundant system controller is fitted. Expansion Mode Operation This facility is not available in these multiplexers and must be set to disabled. Alarm Event Detect Period If a system configuration is programmed for an alarm event, then the alarm fault must exist for the specified period prior to the event occurring.
  • Page 77 Note that the following two items relate to a DomainView feature for collecting statistics, and do not affect the general operation of the multiplexer. For normal operation with NCS, these features must be disabled. 1 Network CRC Upload enabled (0=disable, 1=enable) > Network CRC Upload Timer Offset 300 (180 to 720) >...

  • Page 78: Security Password Modification

    It should be noted that 9600 is only for local Test access to the Network Management UARTs on the System Controller and must not be used across the network. Each management configuration (1-14+Default) specifies one of the seven patchfields available on the System Control cards and Dual LIU cards fitted in ports 1 and 2.

  • Page 79: Checking And Running Channel Configurations

    5.4 Configuration Menu 5.4.1 Checking and Running Channel Configurations The operator must select 'Configure' 'Channel' (CC) from the root menu and may then display which is the 'Current' configuration, 'Run' a new configuration or enable/disable the 'Alarm events' for configurations using the following menu commands.

  • Page 80: Dliu Integrated Menu

    The following descriptions of configuration options show the 'Modify' and 'Display' formats for each option. Port Integrated Menu Support The 3000 Series provides integrated menu support for some channel cards, e.g. Dual Nx64 LIU and Dual G.703 DLIU. Refer to the channel card manuals for the menus provided for all cards except Dual G.703 LIU which is covered in this manual.
  • Page 81 These parameters may be set individually for line 1 or line 2. The user may also select the state (enabled or disabled) of the G.703 clock output when the multiplexer is free running via G.703 Clk o/p menu. 2) F code This will allow the on-going data in each timeslot and associated signalling to be determined should the source data fail.
  • Page 82 momentarily on the host equipment and also on equipment connected to the host. 2 Terminal. This will isolate line 1 from line 2 providing two separate PCM paths to the cross connect switch. Signalling may be different on line 1 and line 2 (CAS or CCS) and fault logging may be individually set as for multipoint.
  • Page 83 be set greater than the change over delay by the amount of hold period that is required. Time delays are selectable between 0 and 25 seconds in steps of 100ms. Dual management path When this facility is enabled, management data will operate as in terminal mode e.g.
  • Page 84 Change-over Operation The decision to switch or not to switch will be made on the basis of the table below when the delay time expires. Faults which occur and clear within the switch over delay time will not be considered for the purposes of the decision table.
  • Page 85 6) CRC4 The CRC4 error checking facility may be individually enabled or disabled for line 1 and line 2. If CRC4 is enabled, the user has the option to enable/disable the low error rate detection using CRC4. If enabled, the low error rate is calculated using CRC4.
  • Page 86 Up to 31 timeslots may be selected and timeslots which are already connected will be shown as 'Duplex'. To disconnect an allocated timeslot enter U. MULTIPOINT Selecting multipoint operation is exactly the same as ‘Duplex’ except that the timeslots are also allowed to pass through from Line 1 to Line 2 in duplex as well as being dropped/inserted to the relevant stream on the cross connect switch.

  • Page 87: Sync Source

    5.4.4 Sync Source A menu command allows the operator to modify the sync source and sync priority selections for the configuration of the multiplexer. Up to four sync source selections can be entered after which the list will be terminated with free run.

  • Page 88: Alarm Events, Route Alarms And External Control Relays

    Up to eight circuits may be identified as 'Route alarms' for use by the NCS for re-routing purposes. They have no use in non-networked mode. Four relays are provided on the 3200 for control of attached equipment. These relays may be set to operate as required for different configurations.
  • Page 89 (CCEMA) Alarm event | Route alarms | Extern relays | Card out >A enter start stream, start circuit >P3, A1 config. options 1-14 (U = unassigned) > (P3, cct A1) alarm config Unassigned > (P3, cct A2) alarm config 4 > (P3, cct A3) alarm config Unassigned >...
  • Page 90 5.4.5.2 Route Alarms Modify Format (CCEMA) Alarm event | Route alarms | Extern relays | Card out >R (Route 1 ) Stream 1 > (Route 2 ) Stream 2 > (Route 3 ) Stream 3 > P4,B2 (Route 4 ) Stream 4 > S3 (Route 5 ) Port 3, Circuit A1 >...

  • Page 91: Circuit Assignments

    This action will cause external relay number one to be operated when the configuration is run. Display Format (CCEDA) Alarm event | Route alarms | Extern relays | Card out >E ext 1 relay Enabled ext 2 relay Disabled ext 3 relay Disabled ext 4 relay Disabled (CCEDA) Alarm event | Route alarms | Extern relays | Card out * >...

  • Page 92: Circuit Controls

    Modify Format (CCEMP) Assigned cct | Circuit ctl | Smart configs | p1 | p2 | p3 | p4 >A port, first, last timeslot >P4 (P4,TS 1) cct = , TS control = 00000000B >A1, 10001010B (P4,TS 2) cct = , TS control = 00000000B >A2 The first timeslot to be assigned may be selected to be TS0 to TS31.

  • Page 93: Smart Configurations

    (P4, cct A1, TS 5),control 1 = 11111111B, control 2 = 11111111B (P4, cct A2, TS 6),control 1 = 10100111B, control 2 = 11111111B (P4, cct A3, TS 7),control 1 = 11011011B, control 2 = 11111111B (P4, cct A4, TS8 ),control 1 = 11011101B, control 2 = 10110101B 5.4.8 Smart Configurations Each channel configuration must specify an associated configuration number for each smart channel card installed.
  • Page 94 Modify Format (CCEMC) Fcode table | Channel assign >F Fcode no (1 to 16) >1 1 data, signal = FFH; FH > 2 data, signal = FFH; FH >AAH,AH 3 data, signal = FFH; FH >55H,5H 4 data, signal = FFH; FH >01H,FH 5 data, signal = FFH;...

  • Page 95: Cross-Connection Configuration

    5.4.10 Cross-Connection configuration The stream numbers on the cross-connect switch directly relate to the PCM lines of Dual LIU cards as follows: Port 1 line 1 Port 2 line 1 See section 1 Figure 1-1 Port 1 line 2 Port 2 line 2 Timeslots may be cross-connected between any stream, between any port or between any stream and port without restriction e.g.
  • Page 96 Example 2 (CCEMCC) Simplex | Duplex | Fixedata assign | Multipoint >D output stream, start timeslot, end timeslot >P4, 22 (P4; TS 22; Fixedata ;) from, TS, = ; >S2,1 (P4; TS 23; Fixedata ;) from, TS, = ; >P3,2 (P4;...
  • Page 97 Nx64k Cross-connection For Nx64k data groups, the time delay through the network must be the same for all timeslots. This requires some care when configuring the multiplexer’s cross connection. If possible, configure the cross connection so that the offset between each of the source timeslots within the Nx64k block and the associated output timeslots of the Nx64k block are the same.
  • Page 98 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Source Time Slot • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •...

  • Page 99: Fixed Data Assignment

    5.4.11 Fixed Data Assignment The Fixed Data mode allows a permanent fixed code to be output in the assigned timeslots and CAS signalling channels. The operator should enter the Fcode number (1-16) from the Fcode table and not the data itself.

  • Page 100: Cross-Connect Broadcast Display

    Display Format (CCEDC) Fcode table | Channel assign | Multipoint | Broadcast >M output stream, timeslot >S1 (S1, TS 1, Multipoint ,) from P3, 2, P3, 5, P4,1 (S1, TS 2, Multipoint ,) from P3, 6, P3, 7, S4,2 (S1, TS 3, Multipoint ,) from P3,18, P3, 9, P3, 23, S3, 8 Note that the first timeslot entered is displayed as the last, since it will have the longest delay through the cross-connect switch.

  • Page 101: Management Configuration Linking

    5.4.16 Management Configuration Linking The management menu incorporates a menu option for the linking of management configuration changes to channel configuration changes. In linked mode, the management configuration would be re-selected with every new channel configuration and/or timed event change. Each channel configuration field will run the management configuration with the same ID number if 'link' is enabled.
  • Page 102 Cards must be removed from the equipment map in order to clear the map mismatch fault after a card has been removed from the chassis. If a card is fitted, but is not installed in the equipment map for that card slot, a map mismatch fault will not be raised and fault logging from that card will be inhibited.

  • Page 103: Default Configuration

    Installing all Cards (CE) List | Install | install All | Remove | iDent >A P1,A, DT310 installed P2,A, none installed P3,A, DT310 installed P3,B, none installed P3,C, none installed P3,D, DT575 installed P3,E, none installed P3,F, none installed P4,A, none installed P4,B, none installed P4,C, none installed P4,D, none installed...
  • Page 104 The default configuration field has been set in the following manner: P1 and P2 (Line 1 and Line 2) Sync: Line loss Fcode: Bypass: Disabled Mode: Terminal Error: CRC4: Disabled Alarm: Line loss Ts Assign: No timeslots allocated Sync source Failure recovery mode: Automatic Automatic recovery delay: 1 second...
  • Page 105 Management alarm events All unassigned Alarm events disabled Route alarms Route 1 Stream 1 Route 2 Stream 2 Route 3 Stream 3 Route 4 Stream 4 Route 5 P3 Circuit A1 Route 6 P3 Circuit A2 Route 7 P4 Circuit A1 Route 8 P4 Circuit A2 External relays...

  • Page 106: Remote Menu

    5.5 Remote Menu 5.5.1 Operation (Non Network Mode) Networking must be disabled in the 'Install' menu for this mode of operation. In this mode the multiplexer may use network management data paths for point to point control of the remote equipment. In the example below the operator has selected 'Remote' to obtain a menu response from a 3400 (id G24) located remotely to the multiplexer.

  • Page 107: Smart Menu

    5.6 Smart Menu Operation The 'Smart' menu option at the root menu will provide the operator with access to any installed smart channel cards. On selection the operator will be prompted for a card slot identity. and control will then be passed to the menu system of the smart channel card installed in that position.
  • Page 108 X723-300151 5-42 Issue 2...

  • Page 109: Fault Reporting

    Fault Reporting & Maintenance Facilities 6.1 Fault Reporting ault M ode L ogging A sr C urrent S tore C lear L ist list N ew sys T em m A nagement A ctive L ist s Y nc S mart C ircuits M isc list A ll...

  • Page 110: Fault Logging Modes

    6.1.1 Fault Logging Modes The operator can display or change the current fault reporting mode by menu selection: 'Off' - faults will be stored in the fault buffer. 'Logging' - faults will be logged to the screen as they occur as well as being stored.

  • Page 111: Received Attention

    Inhibit (FA) List | list All | Circuit alarms | Received attention >C (FAC) List | Enable | Inhibit >I port, circuit >P3,B4 List (FA) List | list All | Circuit alarms | Received attention >C (FAC) List | Enable | Inhibit >L P3 circuit B4 alarm inhibited Enable (FA) List | list All | Circuit alarms | Received attention >C...
  • Page 112 Smart faults may be marked received attention with the 'Smart faults' menu command. (FAR) Faults | Smart faults | p1 | p2 >S select port, card >P3,A P63, 2 RxAt, 6 Smart , 2 AIS 1 P3,A1, , , TS , Time 24,2, 10, 45 P63, 2 RxAt, 6 Smart , 37 Frame slip 2 P3,A2, , , TS , Time 24,2, 10, 51 (FAR) Faults | Smart faults | p1 | p2 * >...

  • Page 113: Fault Tables And Alarm Responses

    6.1.6 Fault Tables & Alarm Responses FAULT RELAYS LEDS ACTIONS M A I I T C A A S A G S S SYSTEM GROUP 5 Power in fail PSU A fail PSU B fail PSU tolerance Event corruption Self test fail Config 1-14 23 Unconfigured 24 Config self test...
  • Page 114 FAULT RELAYS LEDS ACTIONS M A I R F I 6 A A S A G S S SMART GROUP 6 LINE 2 32 Line loss 33 AIS 34 F sync loss 35 Filt err 10 -3 36 Tslt 16 AIS 37 MF sync loss 38 MF Remote Alarm 39 Frame slip...
  • Page 115 FAULT RELAYS LEDS ACTIONS M A I R F I 6 A A S A G S S MISC GROUP 9 Timeslot loop Map mismatch Rx. Atten. local Rx. Atten. network Network fail Module ? Status ? -48 battery fail Extern status 2 Extern status 3 Extern status 4...
  • Page 116 Note 1 Group 5 fault 9 - configuration 1 running. Faults 10 to 22 correspond to configurations 2 to 14 running. One of the configurations will normally be running, and this zero level 'fault' is for information only. Note 2 Group 5 fault 25 - configuration 1 corrupt.

  • Page 117: Statistical Reports

    6.1.7 Statistical Reports Under the fault menu, the option is provided to display the results from the CRC4 checking facility if it has been enabled in the configuration set up (See 5.4.3. 6)), or to display the 'Counts' and 'Duration' of other LIU faults occurring on ports 1 and 2.
  • Page 118 Note that on entry to the CRC4 menu that the escape key will be inhibited for a short period. ii) Durations This will give a display of the cumulative duration of faults which have occurred on either port or line. The counter increments in one second steps up to a maximum of 65535 seconds when the store will overflow and not reset.

  • Page 119: Maintenance Facilities

    6.2 Maintenance Facilities The maintenance facilities are controlled by menu options as follows:- Maintenance Menu aintenance C urrent s Y nc c O nfig A larms ircuit status S mart configs D ata tests S et D ata S ignalling D isplay D ata S ignalling...

  • Page 120: Current Status Monitoring

    6.2.1 Current Status Monitoring (M) Current | Data tests | self Test | Alarms | Version | System | typE >C The current status of the following items may be displayed by selection of the appropriate menu command. Sync Source This command displays the current sync source.

  • Page 121: Setting Data And Signalling

    Circuit Status This menu command requests a port followed by the circuit range, and then displays any timeslot assignments followed by the status port values for the range specified. (MC) sYnc | cOnfig | Alarms | Circuit status | Smart configs >C port, first, last cct >P3,A1,A4 port (P3, A1,TS 4) status 1 11011111B,...

  • Page 122: Displaying Data, Signalling And Peak Codes

    6.2.3 Displaying Data, Signalling and Peak Codes Data and Signalling The 'Data' 'Display' commands allow the operator to monitor the data in a timeslot or the signalling data in TS16 associated with a timeslot from any of the incoming streams or ports. Data and signalling will always be displayed in Hexadecimal.
  • Page 123 Note: Incoming and Local PCM loops reset each other, each cannot therefore be set at the same time. Both incoming and local loops require an additional parameter that specifies the period for which the loop is to be applied. This may be from 1 to 120 seconds, indefinite if 'I' is entered or 10 seconds if no parameter is entered.
  • Page 124 Timeslot local loop This commands the system controller to loop a selected timeslot back to its source via the cross connect switch. (MD) Set | Display | Loops | Reconfigure >L (MDL) Local | Incoming | Timeslot local | Circuits >T stream, timeslot >P3,1 When applying a timeslot local loop all data sourced from the looped timeslot will be forced to fault codes.

  • Page 125: Running Self Test

    CHANNEL CARD CIRCUIT LOOP Timeslot Local Loop Loop CROSS CONNECT SWITCH Incoming Loop Set Data Display Data Set Signalling Display Signalling Display Peak Codes Figure 6-1 Position of Loops and Data Test Points Reconfigure The 'Reconfigure' option runs the current configuration again. All loops and data tests will be cleared, and in A/B mode 'path A' will be selected.

  • Page 126: Alarm Relay Setting And Clearing

    The 'Relay set' command allows the operator to set the condition of any of the 3200 alarm and external relays. If they are already set active due to any faults or configuration commands they can still be disabled. Once set,...

  • Page 127: Equipment Type And Version Display

    (M) Current | Data tests | self Test | Alarms | Version | System | typE >E 3000/3 In this case the 3200 must be installed as a 3000/3 node in the network management system for the correct menus and faults to be displayed on the controller.

  • Page 128: Network Problems

    Synchronisation problems. Incorrect equipment configurations. Equipment faults. The 3200 contains comprehensive fault tracing facilities to enable operators to determine, and rectify, the cause of any network faults. When a fault occurs, or clears, a message is added to the fault message store, and displayed if fault logging is on.

  • Page 129: Built-In Test Facilities

    The interrelation between the four main fault classes is shown below. System (equipment) faults PCM transmission faults Synchronisation Data path faults faults From this it can be seen that the correct sequence for clearing network problems is: 1. Check and clear all system faults at all nodes in the network. 2.
  • Page 130 The self-test routine, which is automatically carried out after a cold start- up, may be restarted by use of the Maintenance-self-Test command (6.2.5). WARNING: The node will be isolated from the network during the period of self test PCM Faults PCM loops may be applied to Dual LIUs in ports 1 and 2 by use of the Maintenance - Data tests - Loops - menu (6.2.4).

  • Page 131: Ncs Fault Levels

    6.5 NCS Fault Levels Level 1 Faults There are no faults at this level. Level 2 Faults There are no faults at this level. Level 3 Faults External status 2 This indicates the presence of an alarm condition on external status line 2. Level 4 Faults Power in failure This fault indicates that a power fail condition has occurred.
  • Page 132 Config 2 corrupt to config 14 corrupt As config 1 corrupt RT Clock corrupt This fault indicates that the data from the real time clock is corrupt. The most likely causes of this problem are that it has never been correctly configured or the battery is discharged.
  • Page 133 Comms failure This fault is used to indicate that the smart communication link between the system controller and smart channel card has failed. This will mean that none of the configurations running on the smart channel cards can be considered to be valid, and the card should be re-initialised until the fault clears.
  • Page 134 Level 10 Faults Frame slip Frame slips will occur if there is a problem with the synchronisation of the equipment. The slip is an attempt to re-sync to the Frame alignment pattern. This will result in the omission or repeat of one frame of data. Tslt 16 AIS This fault indicates that the AIS signal, i.e.
  • Page 135 PSU B Fail This indicates that power supply unit 'B' has failed, when 'fitted' in the 'mOde-Install' menu. PSU tolerance This fault indicates that one of the internal power supply rails is outside the specified tolerance of ± 4%. Slip This fault is associated with a channel card and is present when a data circuit slip has occurred on the card.
  • Page 136 Sync priority 3 This fault indicates that the third synchronisation source has failed. Sync priority 4 This fault indicates that the fourth synchronisation source has failed. No Sync source This fault indicates that all the clock selections given in the channel configuration have failed and the system is now running priority 5 source (free run).
  • Page 137 Module 1 Status 2 This fault indicates that module 1 has raised status line 2. For optical interface modules this is optical line signal loss. Module 1 Status 3 This fault indicates that module 1 has raised status line 3. Module 1 Status 4 This fault indicates that module 1 has raised status line 4.
  • Page 138 Rx. Atten. Local The currently active faults have had their relay driving actions inhibited by the use of the local receive attention command. This command will originate from the operator menu under the 'faults active' section. Rx. Atten. Network The currently active faults have had their relay driving actions (when enabled on the node) inhibited by the use of the network receive attention command.

  • Page 139: Channel Interface Cards

    The channel card manual describes the facilities available on each interface along with configuration and connection detail. All channels cards may be inserted or removed from the 3200 with power applied to the chassis without damage. It is usual to remove the card from the Equipment map before physical removal to prevent an alarm being raised.
  • Page 140 A unique I.D. code for the card is contained in the status port information which is used by the system controller in the 'Equipment map' to display which type of card is fitted in each position. Data channel cards, when set for DTE operation, can provide an 8kHz clock signal derived from the data/clock input at the interface.

  • Page 141: Approvals

    7.2 Approvals The following Interface cards, when fitted to a 3200 multiplexer chassis, have approval for use with 'Private Circuits' Details of the approvals are given in the relevant installation and operation manual for each card. Quad 2/4 Wire E&M Channel Card DTE65 &...
  • Page 142 DC5/Loop Disconnect Signalling Converter Card DTE80 & 81 1544k Line Interface Card DTE74 & 75 Optical 2 Mbit/s G.703 Modules DT504 to 509 inclusive Dual 2048k Line Interface Unit DTE241 TS0 Data Compression Card DTE243 Transmic 2G System Card DTE242 X723-300151 Issue 2...

  • Page 143: Power Supply Equipment

    8.1 General Description The 3000 power supply unit (PSU) may be used to power two independent, co-located 3200 equipments. The 3RU shelf may be equipped with up to 4 plug-in PSUs depending on the chassis options supplied. Available combinations include:...
  • Page 144 The front of the unit is covered by a single front panel. All connections are made to the rear of the chassis for power input, power output and alarms. A rear view of the chassis is shown in Figure 8-2. I-ON O-OFF PSU 2B...

  • Page 145: Specifications

    8.3 Specifications Complies with: BS6527 1988 Class A EN55022, Emissions IEC801 part 3 level 3, narrow-band susceptibility British Telecom RC5000M open issue 11.1.9, broad-band susceptibility IEC801 part 2 level 3, ESD Power Input Voltage: 187-264VAC, 47 to 63Hz. Fused at 3 amps 99-132VAC, 47 to 63Hz.
  • Page 146 Alarms Power Good: 0V or open circuit connection. Presence of 0V represents a power good condition. 0V signal will be within the range ± 0.3V with respect to the local earth, and capable of sinking 10mA max. Connection: 9-way D-type socket. Mechanical 19 inch.

  • Page 147: Power Wiring

    Under typical conditions, e.g. ambient temperature less than 25 C, and with the powered equipment half loaded with cards, fans will not be required. Advice on any particular installation can be gained by contacting your supplier. The initial fitting of a fan requires the unit to be powered down. It is recommended that a 1U (1.75") space is left above the power unit to aid ventilation.
  • Page 148 -48VDC input is 4 amps. The 0V input terminal must be connected to earth, usually at the supply source, and to the chassis ground of the 3200 chassis. Power Output Panel All power output connections are made from a 12-way Trident socket mounted on the Power Output Panel.

  • Page 149: Commissioning

    8.5 Commissioning Power-up procedure: Ensure that the correct PSU type is fitted to the chassis. Check that AC PSUs are set to the correct input voltage. Always ensure a PSU is switched off before plugging it into a live chassis. After switch on, the 'Power Good' LED on each PSU front panel should be illuminated.

  • Page 150: Maintenance

    8.6 Maintenance PSU Replacement A PSU is faulty if the 'Power Good' LED is not illuminated when switched A PSU must be switched off before it is plugged into or unplugged from a live system. If a PSU is switched off it should not be switched back on again for a period of 30 seconds.

  • Page 151: A.1 General Information

    Patchfield Electrical Diagrams A.1 General Information Patchfields for the system controller and Dual LIU Cards are pre- programmed and held in PAL devices. The patchfield devices are allocated a DT number which is marked on the device. The following electrical equivalent diagrams refer to patchfields DT990/C for the System Controller and DT995D for the Dual LIU Card.
  • Page 152 System Controller Electrical Patchfield Diagrams DT990/C Patchfield No. 1 UAR T UAR T “A” “B” COM 1 COM 3 COM 4 R S 232 UAR T “C” Patchfield No. 2 UAR T UAR T “A” “B ” COM 1 COM 3 COM 4 R S 232 UAR T...
  • Page 153 Patchfield No. 3 UAR T UAR T “A” “B ” COM 4 R S 232 UAR T “C” Patchfield No. 4 UAR T “A” COM 4 R S 232 UAR T “C” X723-300151 Issue 2...
  • Page 154 Patchfield No. 5 UAR T UAR T “A” “B ” COM 1 COM 2 COM 3 COM 4 R S 232 UAR T “C” Patchfield No. 6 UAR T UAR T “A” “B” COM 1 COM 2 COM 3 COM 4 R S 232 UAR T “C”...
  • Page 155 Patchfield No.7 UAR T UAR T “A” “B” COM 1 COM 2 COM 3 COM 4 R S 232 UAR T “C” X723-300151 Issue 2...

  • Page 156: Dual Liu Patchfield Dt995D

    Dual LIU Patchfield DT995D Electrical Diagrams & & & & & & & & & & & & & & & & & & & & & & & & X723-300151 Issue 2...

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