OPERATING MANUAL. MULTIPLEXER Type TM X RS-232, X ETHERNET 2 MBIT/S G.703 (G.704)

Transcription

1 MULTIPLEXER Type TM X RS-232, X ETHERNET 2 MBIT/S G.703 (G.704) IO81-1E ugust 2004 LNEX S.., 8 Ceramiczna St., Lublin, POLND Service Dept.: tel. (81)

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3 Table of Contents 1 GENERL CHRCTERISTICS PURPOSE BSIC FETURES OF THE UNIT EXMPLES OF PPLICTI MRKING CNECTORS ND LED INDICTORS FRT PNEL RER PNEL CNECTORS' DT PRINCIPLES OF CNECTING... 2 E1 Interface... 2 Ethernet Interface... 2 RS-232/485 Interface FUNCTIL DESCRIPTI INTRODUCTI BLOCK DIGRM STRUCTURE OF 2048 KBIT/S SIGNL FRME PRINCIPLES OF DROPPING THE SLOTS FROM 2048 KBIT/S SIGNL SELECTI OF OF TIME SLOTS SELECTI ND CFIGURTI OF TRIBUTRY CHNNELS OPERTING MODES OF TRIBUTRY CHNNELS... 2 Operating mode with interrupted transmission path... 2 Operating mode without interrupting the transission path EMERGENCY MODE OPERTI WITH THE TM-48 DEVICE OPERTI S TERMINL EQUIPMENT ESTBLISHING THE CLOCK SOURCE INSTLLTI ND OPERTI INTRODUCTI OPERTING CDITIS INSTLLTI SELECTI OF INPUT ND OUTPUT IMPEDNCE OF LINE PORTS CFIGURING THE CTCT POINTS OF RS-232/485 CHNNEL PORTS POWER SUPPLY... 2 Mains... 2 Power pack CFIGURTI CFIGURTI OF TRIBUTRY CHNNELS SELECTI OF DIRECTI IN TRIBUTRY CHNNELS SELECTI OF TIME SLOTS SELECTI OF OPERTING MODES FOR CHNNELS SELECT OF OPERTING MODE FOR THE DEVICE DIGNOSTIC LOOPS TRIBUTRY LOOP THE PORT "" TRIBUTRY LOOP THE PORT "B" TRIBUTRY LOOP "" ND "B" PORTS DISTRIBUTI FRME... 2 IO81-1E I ugust 2004

4 8 SPECIFICTIS ELECTRICL PRMETERS kbit/s Line Interface...2 RS-232(V.28) synchronous Digital Interface...2 RS-485(EI-485) synchronous Digital Inteface...2 Ethernet 10BSE-T Digital Interface MECHNICL PRMETERS ELECTROMGNETIC COMPTIBILITY ENVIRMENTL REQUIREMENTS...2 Operation...2 Transportation...2 Storage POWER SUPPLY SCOPE OF DELIVERY...2 IO81-1E II ugust 2004

5 List of bbreviations IS larm Indication Signal ETSI European Telecommunications Standards Institute GND Neutral (Ground) ITU-T International Telecommunication Union Telecommunication Standardization Sector LOS Loss Of Signal LOF Loss Of Frame DCE Data Communication Equipment DTE Data Terminal Equipment SDH Synchronous Digital Hierarchy IO81-1E III ugust 2004

6 Operational safety The TM-81.1 multiplexer has been designed and tested for the operating safety in accordance with PN-EN standard.! This Operating Manual is an integral part of the device and it is delivered to the Users along with it.! Only authorised persons with qualifications confirmed by the appropriate certificate can configure the device.! The power supply cable should always be connected to power source by means of a socket with neutral pin. Connection to the power network without neutral pin is allowed, provided the earthing terminal located on the rear panel of the device is connected to ground.! Simultaneous grounding and neutral earthing through power cord is not allowed.! Dual fuse - phase/neutral. Each phase wire is protected with separate fuse installed inside the device. If only one fuse is defective, other components can be live.! Some of power pack components installed on PCB are connected with mains potential.! In order to avoid any contact with live components, always disconnect power supply before removing the cover.! The device is not equipped with a built-in circuit-breaking system. Such a system should be installed outside the device. The Manufacturer is not responsible for any use of the device in a manner noncompliant with the operating manual. IO81-1E IV ugust 2004

7 1 General characteristics 1.1 Purpose The device allows transmitting both asynchronous digital signals and Ethernet signals through 64 kbit/s transmission channels of 2048 kbit/s stream structured in compliance with ITU-T G.704 Recommendation. The multiplexer is equipped with two 2048 kbit/s line ports that are compliant with ITU- T G.703 recommendation in the physical layer. These ports enable connection with other telecommunication devices like SDH or PCM-30 terminal equipment or any other signal sources featuring the bitrate of 2048 kbit/s and equipped with corresponding interfaces. The multiplexer enables adding the component 64 kbit/s signals to and dropping them from a line stream of 2048 kbit/s, both in point-to-point or bus configuration. 1.2 Basic Features of the Unit The unit is equipped with two line ports 2048 kbit/s compliant with ITU-T G.703 and G.704 Recommendations. Moreover, the multiplexer has five tributary ports compliant with ITU-T V.28 and V.11 standard, as well as two ports compliant with IEEE BSE-T standard. The device is available in two versions: powered from the V DC battery pack and with power supply from V mains. The multiplexer housing is 434 mm wide, 188 mm deep and 44 mm high. The front panel of the device is equipped with the set of switches for device configuration and eleven LED diodes that signal the device status. It is possible to screw mounting brackets to the housing. These brackets are necessary for mounting the device in a 19 or 21 telecommunication rack. IO81-1E 1 ugust 2004

8 1.3 Examples of pplication Radio tower LN LN C7 (10BSE-T) C6 (10BSE-T) Radio line modem C1 (RS232/485) C6(10BSE-T) Managing station C1-5 (RS232/485) TM-81 TM-81 G.703/G.704 G.703/G.704 G.703/G.704 G.703/G.704 Telecommunication network G.703/G.704 G.703/G.704 TM-81 C7 (10BSE-T) C2 (RS232/485)... C5 (RS232/485) LN larm switchboard larm switchboard Fig. 1. pplication of TM-81-1 multiplexer for construction of data transmission and management networks. IO81-1E 2 ugust 2004

9 IP camera IP camera larm switchboards C7 (10BSE-T) C1 C6 (RS232) (10BSE-T) C2 (RS232) C3-5 (RS232/485) C7 C7 (10BSE-T) (10BSE-T) Monitoring station C1-5 (RS232/485) TM-81 TM-81 G.703/G.704 G.703/G.704 G.703/G.704 G.703/G.704 Telecommunication network G.703/G.704 G.703/G.704 TM-81 C7 (10BSE-T) C1 C6 (RS232) (10BSE-T) C2 (RS232) C3-5 (RS232/485) IP camera IP camera larm switchboards Fig. 2. pplication of TM-81.1 multiplexers for construction of object protection networks IO81-1E 3 ugust 2004

10 1.4 Marking Note: Each time a symbol containing the letter "X" instead of its corresponding digit appears in the Manual, it means that the feature specified in this part of the symbol is insignificant for the parameter being discussed and may be equal to any value from the abovementioned range. However, the device symbol specified for ordering purposes must contain only the digits following the manufacturer symbol "TM". 2 Connectors and LED indicators 2.1 Front Panel The following controls are located on the front panel of the device: Switches for configuring the device, LEDs for signalling the status of G.703 and 10BSE-T channels, LED for signalling the power on. 1 - Power On LED 2 - Switches for configuration of RS component channels 3 - Switches for configuration of ETHERNET component channels, Status signalling for Ethernet channels (RCV- reception of frames at the port, LNK informs whether the port is connected correctly) 4 - Switches for configuration of E kbit/s channels 5 - Status signalling for E1 ports TM T R I B U T R Y C H N N E L C O N F I G U R T I O N RS232/485 RCV 10BSE-T MULTIPLEXER 7x64k/2M CFIGURTI Droop & B Continue 910 C1 C2 C3 C4 C5 LNK C6 C7 LNK C1 C7 C1 C7 TS LP RCV CHNNEL DIRECTI Droop MODE OF OPERTI LOS G.703 LOF 10-3 IS B Fig Front panel IO81-1E 4 ugust 2004

11 2.2 Rear panel The following controls are located on the rear panel of the device: E1 interface connectors, larm contact connector, Connectors of RS-232, 485, and Ethernet 10BSE-T tributary channels, LEDs for signalling the status of 10BSE-T interfaces (LNK,RCV), Screw terminal for connecting the 48 V DC power supply, Grounding terminal. 75W 120W B larm 2 C4 5xRS232/485 DCE RCV 10BSE-T 2x10BSE-T MDI-X RCV 10BSE-T 7,8 SHIELD LNK LNK C C C C C POWER Connectors of E1 interfaces balanced 120 Ω DB-9, coaxial 75 Ω 1,6/5,6 mm 2 - Screw terminal for alarm contact 3 - Connectors of RS-232, 485 tributary chatnnels: C1 first tributary channel, etc. 4 - Connectors of Ethernet RJ-45 tributary channels Status signalling for Ethernet channels (RCV- reception of frames at the port, LNK informs whether the port is connected correctly) 5 - Screw terminal for power supply 6 - Grounding terminal Fig. 4. Rear panel IO81-1E 5 ugust 2004

12 2.3 Connectors data Fig. 5. Fig. 6. Fig. 7. Fig Pin No. Pin Description 1,6 Transmission of Data output 5,9 Reception of Data input 7 Transmitted data shield 8 Received data shield View and description of balanced E1/G Ω contact connector Pin No. Pin Description 1 DCD 2 RD (Transmitted Data) 3 TD (Received Data) 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 Not connected View and description of asynchronous RS-232 DCE interface connector Pin No. Pin Description 1 Not connected 2 TD+ (Transmitted data) 3 RD+ (Received data) 4 Not connected 5 Not connected 6 TD- (Transmitted data) 7 Not connected 8 RD- (Received data) 9 Not connected View and description of asynchronous RS-485 interface connector 1 8 Pin No. Pin Description 1 TD+( Received data) 2 TD- (Received data) 3 RD+(Transmitted data) 6 RD- (Transmitted data) View and description of Ethernet - MDI-X interface connector IO81-1E 6 ugust 2004

13 2.4 Principles of Connecting E1 Interface Input and output signals of the E1/G.703 interface can be fed in two ways: By using two coaxial cables with the impedance of 75 Ω, terminated with 1,6/5,6 plug-in connectors, or By using two screened balanced cables with the impedance of 120 Ω, or one screened double cable with the same impedance. Please remember to set jumpers inside the device in accordance with the type of cable used see point 4.4. To meet the requirements concerning generation of radioelectric interference, the following principles should be observed: The 1,6/5,6 plug-in connector should be installed on the coaxial cable in the way ensuring the good electric contact of the cable screen with the housing of connector around the whole periphery, Connection of balanced cables should be made by using the DB-9 plug-in connector equipped with metallic or metallised housing (casing), and the screen of cable/cables should contact the housing around the whole periphery. Description of pins in the E1/G Ω interface socket is given in the point 2.3. The Ethernet Interface 1 White/green 2 Green 3 White/orange 4 White/blue 5 Blue 6 Orange 7 White/brown 8 Brown Pin1 Pin8 1 White/orange 2 Orange 3 White/green 4 White/blue 5 Blue 6 Green 7 White/brown 8 Brown Fig. 9. View of the cable for connecting the Ethernet port of the TM-81.1 multiplexer with the MDI-X port of the connected device. 1 White/orange 2 Orange 3 White/green 4 White/blue 5 Blue 6 Green 7 White/brown 8 Brown Pin1 Pin8 1 White/orange 2 Orange 3 White/green 4 White/blue 5 Blue 6 Green 7 White/brown 8 Brown Fig. 10. View of the cable for connecting the Ethernet port of the TM-81.1 multiplexer with the MDI port of the connected device. IO81-1E 7 ugust 2004

14 The TM-81.1 device is equipped with two Ethernet 10BSE-T MDI-X tributary ports outputted to RJ-45 connectors. The cables connecting the TM-81.1 multiplexer with other devices are shown on Fig. 9 and 10. When connecting with the MDI-X port of other device (like hub or switch) the pairs of transmitter and receiver should be crossed (Fig, No. 9). For connecting with the MDI port (network card, router) pairs of transmitter and receiver should be connected directly (Fig. No. 10). Connection should be made by twisted cable, category 5 at least, with the characteristic impedance of 100 Ω. The RS-232/485 Interface The device is equipped with five asynchronous DCE ports outputted to DB-9 connectors located at rear panel. Each port may be configured for connection with the RS-232 or RS-485 interface. Type of connected interface is selectable by using switches that are individually dedicated to each port and located on the front panel. Scheme of connecting the RS-232 interface cable depends on pin arrangement and type of mating connector. Correct operation is ensured on condition that suitable circuits are connected and the transmitter receiver principle is observed during connecting the port with another interface. When configuring the interface to RS-485, a number of operations, resulting from the interface properties, should be performed in order to ensure proper operation of the interface. When switching to another type of interface, the type of transmitters and receivers change from unbalanced RS-232 to balanced RS-485 ones. Therefore the RS-485 interface should be connected by using twisted cable with the characteristic impedance of pairs equal to 120 Ω. lso, the principle of connecting +/- circuits with the same symbol (e.g. TD+/-) over one pair should be observed. s a standard, a RS-485 line uses a shielded balanced twisted cable for transmitting the signals. Up to 32 receivers/transmitters can be connected to balanced twisted bus. There are no special recommendations concerning the point where the device is connected to the bus and connecting the device at the end is not necessary, however the resistors with impedance equal to characteristic impedance of cable should be connected to at both ends of the bus. Due to specific nature of RS-485 topology, transmitters are required to set into high impedance state after completion of transmission or during no-transmission period. This state is seen by receiver as silence on the line. Most line receivers set into logical 1 when their inputs are open. In case of no transmission all transmitters are set to high impedance and their inputs are short-circuited by 120 Ω resistors. From the receiver point of view such state is undefined and, despite the use of hysteresis in receivers, occurrence of interferences on the line may cause switching of the receiver. In order to prevent this phenomenon, the line during notransmission is enforcedly set to appropriate state by adequate biasing of receiver s inputs. Each port of the TM-81.1 multiplexer is equipped with a set of resistors allowing terminating the bus. These resistors are connectable by using a set of jumpers described in point 4.5. IO81-1E 8 ugust 2004

15 ttaching the terminating resistor simultaneously induces line bias as shown below. Ground Vcc RD- RD+ Fig. 11. TM-81.1 multiplexer - connecting of terminating resistor and biasing the line. Each port of the TM-81.1 multiplexer, once configured for RS-485, can work in two modes of transmission, i.e. half-duplex or duplex mode. Setting the operating mode up is possible by using a set of configuration switches located on the front panel of the device. When the device is to work in half-duplex mode and transmit through one twisted pair, it is necessary to short the circuits RD+ TD+ and RD- TD- on the cable attached to the multiplexer. IO81-1E 9 ugust 2004

16 123 TRIBUTRY CHNNEL CFIGURTI CHNNEL DIRECTI MODE OF OPERTI MUX B OR C1 C2 C3 C4 C5 LNK C 6 C7 LNK C1 C7 C 1 C7 RCV RCV CFIGURTI 910 B LOS G.703 LOF 10-3 IS 5 X RS-232, X ETHERNET /2 MBIT/S G.703 (G.704) MULTIPLEXER 3 Functional Description 3.1 Introduction The multiplexer is equipped with two 2048 kbit/s line ports ( and B) compliant with ITU-T G.703 and G.704 recommendations. Through these ports the device can be connected with other telecommunication devices like SDH multiplexers, PCM-30 multiplexers or with any other signal sources featuring with the bitrate of 2048 kbit/s and equipped with similar interfaces. Next, the multiplexer is equipped with five full-duplex channel ports C1 C5 compliant with the ITU-T V.28 or EI-485 standard and two duplex channel ports C6 C7 compliant with IEE BSE-T standard in the physical layer, allowing connecting the device with telecommunication equipment with identical interfaces. These ports are also called tributary channels. The fundamental function of multiplexer is to transmit signals appearing in C1 C7 tributary channels through 64 kbit/s time slots of 2048 kbit/s stream introduced by one of line ports. data signal delivered to channel ports is directed to physical input transceivers, regenerated and then delivered to asynchronous/synchronous controllers. The access of tributary channels to the 2048 kbit/s stream is possible thanks to the integral, configurable dropping circuit (see Fig. 12). The dropping circuit can be configured by using a set of switches located at the front panel. When configuring this circuit, it is possible to: - Select tributary channels designated for transmission; - Select the group of time slots within the 2048 kbit/s stream and assign this group to tributary channels; - Establish the line port ( or B) from which time slots will be dropped; - Set operating mode for each tributary channel. Detailed description of the configuration function and methods of dropping are given in next sections of this manual. PORT PORT B TM-81 MULTIPLEXER 7x64k/2M C1 C2 C3 C4 C5 C6 C7 5 x RS-232/485 2 x 10BSE-T Fig. 12. Multiplexer type TM-81: transmission ports IO81-1E 10 ugust 2004

17 3.2 Block Diagram Line port G kbit/s Relays shunting the device at power failure Signal transmitter and receiver 2048kbit/s G.703 Configuration switches Signal framing synchronisation circuit 2048kbit/s G.703 Circuit for dropping/inserting time slots into/from signal frame 2048kbit/s Local(tributary) channel Direction of channel Channel operation mode CFIGURTI Micro-controller Nadajnik/ odbiornik RS-232 Transmitter/ Receiver Transmitter/ Receiver Transmitter/ Receiver Transmitter/ Receiver Transmitter/ Receiver RS-232 RS-232 RS-232 RS-232 RS-232 Nadajnik/ Ethernet PHY odbiornik & RS-232 Bridge Dwukierunkowe porty kanałowe RS232(V.28) C1-C10 Signal framing synchronisation circuit 2048kbit/s G.703 Signal transmitter and receiver 2048kbit/s G.703 LED signalling diode larm relay Nadajnik/ Ethernet PHY odbiornik & RS-232 Bridge Nadajnik/ odbiornik RS-232 Nadajnik/ odbiornik RS-232 larm contact Line port B G kbit/s Relays shunting the device at power failure Fig. 13. Block diagram IO81-1E 11 ugust 2004

18 3.3 Structure of 2048 kbit/s signal frame The frame of 2048 kbit/s signal, compliant with the ITU-T G.704 Recommendation, is composed of 256 bits numbered from 1 to 256 and is repeated with the frequency of 8 khz. Successive bits: 1 8, 9 16, 17 24,..., and form 32 channels, 64 kbit/s each. These channels are located in 32 time slots numbered from 0 to Fig. 14. Frame of the 2048 kbit/s signal For transmission of digital signals only time slots 1-15 and are used. The slot 0 is used for transporting the frame synchronization pattern, service bits and CRC-4 cyclic code remainder bits (if the generation option is set). The sixteenth slot dedicated to signalling is not used. The device allows setting the option of generation of CRC-4 code and multiframe synchronisation signal. The device is factory configured in such a way that the remainder of CRC-4 code and the pattern of multiframe synchronisation are not added to outgoing frame. To enable the function of adding the remainder of CRC-4 code, it is necessary to short JP16 contacts on position 17 (Fig. 15), whereas adding the multiframe synchronisation pattern is forced by shorting JP16 contacts on position 3. To activate these settings it is necessary to restart the device or initialise it by momentary shorting the RESET contacts. LTER PMC TMEL PMC JP16 RESET Fig. 15. Jumpers for enabling generation of CRC-4 cyclic code and multiframe synchronisation signal IO81-1E 12 ugust 2004

19 3.4 Principles of dropping the slots from 2048 kbit/s signal Principles of dropping the slots from the 2048 kbit/s signal result from the frame structure. During dropping process the slots TS0 and TS16 are omitted. ssuming that the TS(x) slot is the first timeslot designated for transmitting signals of n tributary channels, where x (1 15, 17 31), n (1 7), and: - if x 15 and x+(n 1) 15, then slots from TS(x) up to TS(x+n-1) will be dropped (Fig. 16a), - if x 17 and x+(n-1) 31, then slots from TS(x) up to TS(x+n-1) will be dropped (Fig. 16b), - if x 15 and x+(n-1) 16, then slots from TS(x) up to TS15 and from TS17 up to TS(x+n) will be dropped (Fig. 16c), and - if x+(n-1)>31, then slots from TS(x) up to TS31 and from TS1 up to TS(x+n-32) will be dropped (Fig. 16d). a) 0 16 TS(x) TS(x+n-1) b) 0 16 c) 0 16 TS(x) TS(x) TS(x+n) TS(x+n-1) d) 0 16 TS(x+n-32) TS(x) Fig. 16. Dropping of 64 kbit/s slots from 2048 kbit/s signal frame IO81-1E 13 ugust 2004

20 3.5 Selection of time slots ssignment of time slots TS of the 2048 kbit/s stream to tributary channels is made by using CFIGURTI switches. ssignment is effected by selecting the number of first slot from the group of slots intended for transmission. The selected group of slots is associated with the C1 C7 tributary channels in such a way that first tributary channel C1 is assigned to the first slot of the 2048 kbit/s stream, and next tributary channels C2 C7 are assigned to next successive slots. When selecting timeslot it is important to remember that: neither TS0 nor TS16 slots can be selected as a first slot, the TS0 and TS16 slots are not assignable, in compliance with principles described in point 3.4. In examples shown below the slot number 2 is selected, i.e. the group of slots 2 9 is designed for transmission. Selected timeslots are associated with tributary channels, but these channels do not occupy them. Slots are occupied when specified tributary channels are switched on by switches that configure the working parameters of tributary channels. 3.6 Selection and configuration of tributary channels Switching on and configuring of C1 C7 channels, i.e. occupying the selected timeslots, is possible by using the TRIBUTRY CHNNEL CFIGURTI switches, whereas the CHNNEL DIRECTI switches allow setting, for every channel, from which line port ( or B) the time slots will be dropped. Output of line port Initial slot selected by using CFIGURTI switches Input of line port B Selected group of timeslots Output of line port B... Input of line port Selected group of timeslots... Switches on front panel CHNNEL DIRECTI TRIBUTRY CHNNEL CFIGURTI C1-5 C6-7 B... Fig. 17. Dropping of 64 kbit/s slots from the 2048 kbit/s signal frame IO81-1E 14 ugust 2004

21 3.7 Operating modes of tributary channels Transmission between line ports and B and tributary channels C1 C7 can be effected in one of two ways: With interrupted transmission path - DROP mode, Without interrupting the transmission path - DROP & CTINUE mode. Selection of operating mode is made for each of seven tributary channels individually by using MODE OF OPERTI switches. Operating mode with interrupted transmission path -Drop mode If the tributary channel equivalent to the nth time slot is selected and the MODE OF OPERTI switch is set to the DROP position, then the transmission path between and B ports for this slot is interrupted in both directions. Connection between selected tributary channel and or B port through this slot is closed, and the 0 signal is sent in outgoing direction of the opposite port. In the example shown on Fig. 18 the C1 tributary channel is selected. This channel is associated with time slot number 2. Transmission path between ports and B for the slot 2 is interrupted in both directions. Connection between selected C1 channel and the port through this slot is closed. In the interrupted slot the 0 signal is sent in outgoing direction of the port B. Output of line port MUX Initial slot selected by using CFIGURTI switches Input of line port B Output of line port B Input of line port DMUX MODE OF OPERTI CHNNEL DIRECTI Drop Drop&c B TRIBUTRY CHNNEL CFIGURTI C1 Fig. 18. Dropping of time slots with interrupted transmission path IO81-1E 15 ugust 2004

22 Operating mode without interrupting the transmission path (Drop & Continue mode) If the tributary channel equivalent to the nth time slot is selected and the CHNNEL MODE OF OPERTI switch is set to the OR position, then the transmission path between and B ports for this slot is continuous. In the example shown on Fig. 19 the C1 tributary channel is selected. This channel is associated with time slot number 2. Connection between ports and B for the slot 2 is continuous. lso, the connection between selected C1 channel and the port through this slot is closed. Initial slot selected by using CFIGURTI switches Output of line port Input of line port B Output of line port B Input of line port MODE OF OPERTI CHNNEL DIRECTI Drop Drop&co B TRIBUTRY CHNNEL CFIGURTI C1 Fig. 19. Dropping the slots without interrupting the transmission path 3.8 Emergency mode t power failure the device connects the 2048 kbit/s transmission track between port and B in order to preserve discontinuity. Input of the port is connected with the output of port B, and the input of port B is connected to the output of port. IO81-1E 16 ugust 2004

23 3.9 Operation with the TM-48 device The TM-81 multiplexer can operate with the TM-48 device, when transmission of data is effected through tributary RS-232 ports. synchronous RS-232 ports in the TM-81 device can be switched to operation with the TM-48 device. fter such switching the principle of inserting of asynchronous data stream appearing on the RS-232 port into the 64 kbit/s slot of the G.704 stream changes and becomes same as in the TM-48 device. Changing the operating mode of RS-232 ports require reconfiguration of the multiplexer in the way described in point 5.1. Switching over into the operating mode with the TM-48 device causes that RS-232 channels work at the speed of bit/s. In this mode neither configuration of the speed nor setting the start-stop frame format is necessary. When the device works as compatible with the TM-48 device, the co-operation with the RS-232 interface only is possible. The RS- 485 interface can t be used. Regardless the operating mode configured on the RS-232 ports, the way in which the devices on 2048 Mbit/s line ports are connected remains unchanged. Both point-to-point and bus configuration are permitted. lso, the principles of configuring the clock in such connections remain the same as for connections effected by using the TM-81 devices only Operation as a terminal equipment If there is no 2048 kbit/s signal connected to one of line ports ( or B), the multiplexer should work as a terminal device. Then the device works with the own 2048 kbit/s clock or with the clock reproduced from the G.703 interface and generates the frame compliant with the ITU-T G.704 recommendation towards the used port. The TM-81.1 device is able to automatically switch itself into the terminal device operating mode, or may be toggled into this mode by using a switch. If the device is not configured as the terminal device, then it switches automatically into the terminal device operating mode when the loss of 2048 kbit/s signal is detected or when it receives an IS signal ( sequence). t the same time, the alarm bit in the TS0 slot not containing synchronization pattern towards the used port is set. When the signal appears again or IS signal diminishes, the device resumes operation with two ports. If the multiplexer is configured as a terminal device by using a switch, then in the case of loss of 2048 kbit/s signal or detection of the IS signal from the direction of unused port the alarm bit in TS0 slot is not set. The multiplexer can be set as the terminal device by using CFIGURTI switches (see point 5.5 Selection of operating mode) Establishing the clock source Selection of clock source is possible only when the multiplexer is set to operation as a terminal device by using a switch. utomatic setting into terminal device operating mode always causes the use of clock from internal generator. IO81-1E 17 ugust 2004

24 In the examples shown on Fig. 20, the multiplexers TM-81.1 () and TM-81.1 (D) are configured as terminal devices. If the multiplexer will operate with the internal clock and the multiplexer D with the clock reproduced from the G.703 interface, then transmission in both directions is fully synchronous. and D multiplexers may also operate independently with their own internal clocks. However operation of both multiplexers, configured as terminal devices, with reproduced clocks is not possible. The clock source is selectable by using CFIGURTI switches (see point 5.5 Selection of operating mode). G TM-81() CDR TM-81(D) TM-81(B) TM-81(C) Clock path in the -D direction Clock path in the D- direction Fig. 20. Configuration of the clock for the chain of TM-81.1 multiplexers 4 Installation and Operation 4.1 Introduction Prior to putting the multiplexer into normal service, it is necessary to install it and set-up properly, in accordance with recommendations given below. 4.2 Operating conditions The TM-81.1 multiplexer can operate continuously in closed rooms in environmental conditions presented in the Specifications chapter. The device should not be exposed to direct sunlight. Ventilation slots in the multiplexer housing must not be clogged. It is not recommended to stand the device on heat-emitting objects, although it can be placed on other identical device or installed in the rack in which other devices work. In this case an unrestricted flow of air should be ensured or, if necessary, forced ventilation system installed. 4.3 Installation The TM-81.1 multiplexer can operate as a standalone device or be mounted in 19 or 21 inches rack. For installation in the rack, special mounting brackets included in delivery should be screwed to side walls of the device. IO81-1E 18 ugust 2004

25 Fig. 21. Installation of the multiplexer in 19 or 21 rack IO81-1E 19 ugust 2004

26 4.4 Selection of input and output impedance of line ports To adjust the multiplexer to operation with balanced cables (impedance of 120 Ω) or coaxial cables (impedance of 75 Ω), the JP1, JP2-4, JP5-7, JP8-11, JP12-15, and JP16 jumpers (positions 4 and 5) should be set as shown in the table on Fig. 22. Jumpers are accessible after removing the cover. To get the access to jumpers one should undo four screws from the top of housing, then undo four side screws and remove upper cover. The value of characteristic impedance can be set up for each port individually. The multiplexer is factory set for operation with balanced cables with the impedance of 120Ω. JP1 JP5-7 JP12-15 JP 16(p.4) PORT 120Ω 75Ω (factory setting) Shorted Open PORT B JP1 JP2-4 JP8-11 JP 16(p.5) 120Ω 75Ω (factory setting) Shorted Open LTER PMC ]120[ ] 75 [ JP JP TMEL RESET PMC JP JP ] 75 [ ]120[ JP JP Fig. 22. Location of jumpers on the multiplexer s board carrying line interfaces IO81-1E 20 ugust 2004

27 4.5 Configuring the contact points of RS-232/485 channel ports To configure contact points of channel ports it is necessary to set jumpers on the board with channel interfaces in appropriate positions (see Fig. 23). For each channel ports, C1 C5, it is individually possible to: Set the DSR line into or OFF state, or connect it with the DTR line; Set the CTS line into or OFF state, or connect it with the RTS line; Set the DCD line into or OFF state. Jumpers are accessible after removing the cover. To get the access to jumpers one should undo four screws from the top of housing, then undo four side screws and remove upper cover. Factory settings are as follows: DTR line is connected with DSR line (DTR DSR), RTS line is connected with CTS line (RTS CTS), and DCD line is set to OFF. C5 C3 C4 C1 C2 Fig. 23. Location of jumpers on the board with channel interfaces IO81-1E 21 ugust 2004

28 Figure No. 23 illustrates the position of jumpers for setting the zero modem in the RS-232 interface configuration. Note: It is very important to set RS-485 terminating jumpers to OFF when setting the device to RS-232 interface. Wrong positions of RS-485 bus biasing jumpers may cause improper operation of the RS-232 interface. Figure 24 shows positions of RS-485 interface terminating jumpers set to OFF. Setting the termination and bias jumpers to is justified only when the type of interface is configured to RS-485. Note: In case the interface type is set to RS-485, the DTR DSR, RTS CTS, and DCD jumpers should be removed, otherwise the RS-485 interface may work incorrectly. TERM TERM TERM Locations of terminating and bias jumpers of the RS-485 jumpers OFF state Fig. 24. Location of jumpers related with termination and bias of the RS-485 bus IO81-1E 22 ugust 2004

29 4.6 Power supply Mains The multiplexer in TM version can be powered with both DC and C voltage; the latter with the frequency of Hz and rated value of V. Changing the power supply mains voltage from 230 V to 110 V and vice versa does not require any modifications of device settings. The mains socket the multiplexer is connected to should be equipped with neutral (zero) pin. Connection to the power network without neutral wire is permitted, provided the grounding terminal located on rear panel is connected to ground. Simultaneous grounding through grounding terminal and neutral earthing through power cord is not allowed. Connecting the multiplexer to this power loop from which equipment capable to emit significant pulse interferences, like commutator motors, discharge lamps etc. should be avoided. To ensure maximum reliability, use of the UPS power supply unit is much recommended. Note: Double fuse - phase/neutral. Every mains power cord is protected by separate fuse installed inside the multiplexer. Some elements of power supply unit, located at the PCB, may be live. For versions with V mains power supply (TM ) the plug on power cord also plays a role of circuit-breaking element. Therefore the mains socket should be installed possibly close to the device and should be easily accessible to the personnel. Battery pack Multiplexer in the TM version is supplied with DC voltage with rated value within the range of V. Supply voltage should be fed to the socket with external screw connectors. Polarity of supply voltage is not significant and can be chosen arbitrarily. Grounding terminal located on the device housing should be connected to ground. Grounding wire should feature with low impedance at high frequencies. The device designed for supplying from V DC source (TM ) is not equipped with built-in circuit breaker, therefore it is recommended to install an easily accessible circuit-breaking device in fixed cabling. IO81-1E 23 ugust 2004

30 Grouding terminal Or Power supply connector Grouding terminal Or Power supply connector Fig. 25. Examples of battery pack connections. 5 Configuration For configuring the multiplexer, a set of switches is provided on the front panel. 5.1 Configuration of tributary channels TM-81 MULTIPLEXER 7x64k/2M TRIBUTRY CHNNEL CFIGURTI CHNNEL DIRECTI MODE OF OPERTI CFIGURTI RCV RCV MUX B OR 910 C1 C2 C3 C4 C5 LNK C6 C7 LNK C1 C7 C1 C7 LOS G.703 LOF 10-3 IS B C 1 The parameters of C 1 - C 5 serial ports can be set up by using five sections of switches. The C 1 section configures the C 1 component port and, similarly, next sections configure corresponding component ports. Position of individual switches within the section and corresponding settings of respective ports are shown in the Table below: Channel off. Channel on. Transmission speed of bit/s Transmission speed of 9600 bit/s Transmission speed of 2400 bit/s IO81-1E 24 ugust 2004

31 Transmission speed of 1200 bit/s Number of stop bits - 1 Number of stop bits - 2 No parity bit Type of parity bit odd Type of parity bit even Type of serial interface RS-232 Type of serial interface RS-485 Type of transmission half-duplex (setting valid for the RS-485 interface only) Type of transmission full duplex (setting valid for the RS-485 interface only) To enable the operation with the TM-48 device for RS-232 channels, positions of MODE OF OPERTI switches and configurations of tributary channels should be modified as follows: Upper position of the MODE OF OPERTI switch in section 8 enables the mode of co-operation with the TM-48 device. Required position of tributary channel configuration switch for a given C1 C5 channel, when the channel is activated and co-operation with TM-48 device enabled. The C 6 and C 7 Ethernet ports are configurable through separate, four-position section of switches that allows activating the port and setting the type of transmission. vailable settings and corresponding positions of the switch are given below: IO81-1E 25 ugust 2004

32 TM-81 MULTIPLEXER 7x64k/2M TRIBUTRY CHNNEL CFIGURTI CHNNEL DIRECTI MODE OF OPERTI CFIGURTI RCV RCV MUX B OR 910 C1 C2 C3 C4 C5 LNK C6 C7 LNK C1 C7 C1 C7 LOS G.703 LOF 10-3 IS B RCV RCV LNK C 6 C 7 LNK Channel C 6 off Channel C 6 on Type of transmission for C 6 channel: half duplex Type of transmission for C 6 channel: full duplex Channel C 7 off Channel C 7 on Type of transmission for C 7 channel: half duplex Type of transmission for C7 channel: full duplex. dditionally, for Ethernet transmission it is possible to configure the assignment of number of slots. The device can be configured for operation with one 64 kbit/s time slot and with eight consecutive slots of the G.704 stream. In this case the bitrate for Ethernet channel equals to 512 kbit/s. Selection of the eight slots option for the C 6 channel causes occupancy of eight consecutive slots after the slots of asynchronous channels. In case of C 7 port it will be eight 64 kbit/s slots available directly after C 6 channel. This operating mode is selected by changing the position of the last section of the CHNNEL DIRECTI switch. IO81-1E 26 ugust 2004

33 The speed of 512 kbit/s is set for ETHERNET C 6 and C 7 ports. The speed of 64 kbit/s is set for ETHERNET C 6 and C 7 ports. 5.2 Selection of Direction in tributary channels TM-81 MULTIPLEXER 7x64k/2M TRIBUTRY CHNNEL CFIGURTI CHNNEL DIRECTI MODE OF OPERTI CFIGURTI RCV RCV MUX B OR C 1 C2 C3 C4 C5 LNK C 6 C7 LNK C1 C7 C 1 C7 LOS G.703 LOF 10-3 IS B CHNNEL DIRECTI C 1 C 7 B Transmission direction for channels is selectable by using CHNNEL DIRECTI switches: Setting the switch corresponding to a given channel in upper position means selecting this channel for receiving data from and transmitting them to line port. Setting the switch corresponding to a given channel in lower position means selecting this channel for receiving data from and transmitting them to line port B. IO81-1E 27 ugust 2004

34 5.3 Selection of time slots TM-81 MULTIPLEXER 7x64k/2M TRIBUTRY CHNNEL CFIGURTI CHNNEL DIRECTI MODE OF OPERTI CFIGURTI RCV RCV MUX B OR C1 C2 C3 C4 C5 LNK C6 C7 LNK C1 C7 C1 C7 LOS G.703 LOF 10-3 IS B CFIGURTI The first timeslot from the group of slots of the 2048 kbit/s stream is selectable by using CFIGURTI switches (sectors 1 5) in the following way: Forbidden setting TS1 slot TS2 slot TS3 slot TS4 slot TS5 slot TS6 slot TS7 slot TS8 slot TS9 slot TS10 slot TS11 slot TS12 slot TS13 slot TS14 slot TS15 slot Forbidden setting TS17 slot TS18 slot TS19 slot TS20 slot TS21 slot TS22 slot TS23 slot TS24 slot TS25 slot TS26 slot TS27 slot TS28 slot TS29 slot TS30 slot TS31 slot IO81-1E 28 ugust 2004

35 5.4 Selection of operating modes for channels TM T R I B U T R Y C H N N E L C O N F I G U R T I O N RS232/485 RCV 10BSE-T MULTIPLEXER 7x64k/2M CFIGURTI Droop & B Continue C1 C2 C3 C4 C5 LNK C6 C7 LNK C1 C7 C1 C7 TS LP RCV CHNNEL DIRECTI Droop MODE OF OPERTI LOS G.703 LOF 10-3 IS B Drop Drop& Continue MODE OF OPERTI C C 7 Operating mode for channels is selectable by MODE OF OPERTI switches as follows: Upper position of switch corresponding to given channel means selection of the mode with interrupted transmission path (DROP mode) for this channel. Lower position of switch corresponding to a given channel means selection of the mode without interrupting the transmission path (DROP & CTINUE mode) for this channel. The DROP mode is recommended for most applications for C 6 and C 7 Ethernet channels. 5.5 Selection of operating mode for the unit TM T R I B U T R Y C H N N E L C O N F I G U R T I O N RS232/485 RCV 10BSE-T MULTIPLEXER 7x64k/2M CFIGURTI Droop & B Continue 910 C1 C 2 C3 C4 C5 LNK C 6 C7 LNK C 1 C7 C1 C7 TS LP RCV CHNNEL DIRECTI Droop MODE OF OPERTI LOS G.703 LOF 10-3 IS B CFIGURTI TS LP Operating mode of the TM-81 multiplexer is selectable by CFIGURTI switches (sectors 6, 7, and 10): Normal operation, both and B ports available. The multiplexer works as terminal device, only B port available. Clock signal from internal quartz generator. IO81-1E 29 ugust 2004

36 The multiplexer works as terminal device, only B port available. Clock signal is recovered from 2048 kbit/s signal received from port B. The multiplexer works as terminal device, only port available. Clock signal from internal quartz generator. The multiplexer works as terminal device, only port available. Clock signal is recovered from 2048 kbit/s signal received from port. 6 Diagnostic loops It is possible to set up three tributary diagnostic loops in the TM-81 multiplexer: On the port of line interface, On the B port of line interface, On ports and B of line interface. Loops are closed by using CFIGURTI switches located on front panel of the device (sectors 8 and 9): Closed tributary loop from the side of port. Closed tributary loop from the side of B port. Closed tributary loop from the side of and B ports. 6.1 Tributary loop on the port The tributary loop on port is set up by actuating the switch No. 8 belonging to the CFIGURTI group of switches. Closing of the loop is signaled by blinking of the IS diode of the port. Simultaneously, the IS signal is sent from the output of B port. TM-81 C1 B CFIGURTI C7 Fig. 26. Tributary loop on the port IO81-1E 30 ugust 2004

37 6.2 Tributary loop on the B port The tributary loop on the port B is set up by actuating the switch No. 9 belonging to the CFIGURTI group of switches. Closing of the loop is signaled by blinking of the IS diode of the port B. Simultaneously, the IS signal is sent from the output of port. C1 TM-81 B CFIGURTI C7 Fig. 27. Tributary loop on the B port 6.3 Tributary loop on and B ports The tributary loop on and B ports forms by actuating the switches No. 8 and 9 belonging to the CFIGURTI group of switches. Closing of the loop is signaled by blinking IS diodes of the ports and B. C1 TM-81 B CFIGURTI C7 Fig. 28. Tributary loop on and B ports IO81-1E 31 ugust 2004

38 7 Distribution frame distribution frame type P-81 can be used with TM-81 multiplexer. The frame allows relocating the contact points of line ports and component ports, as well as power supply and contact alarm signal connectors to front panel of the device. The distribution frame is delivered complete with cabling set for connecting the device to transmission, power supply and alarm connectors of the TM-81 multiplexer. The P-81 frame can be fixed to the TM-81 device for good, by using a set of fixing brackets available as optional equipment, or can be mounted separately. Front view of the TM-81 multiplexer + P-81 distribution frame set is shown on the figure below. POWER 10BSE-T 2x10BSE-T MDI-X 10BSE-T RS232/485 LRM 75 B B B P-81 C7 C6 C1 C2 C3 C4 C5 TM T R I B U T R Y C H N N E L C O N F I G U R T I O N RS232/485 RCV 10BSE-T MULTIPLEXER 7x64k/2M CFIGURTI Droop & B Continue 910 C1 C2 C3 C4 C5 LNK C6 C7 LNK C1 C7 C1 C7 TS LP RCV CHNNEL DIRECTI Droop MODE OF OPERTI LOS G.703 LOF 10-3 IS B Fig. 29. Multiplexer type TM-81 with P-81 distribution frame IO81-1E 32 ugust 2004

39 8 Specifications 8.1 Electrical parameters 2048 kbit/s line interface Parameter or feature Value of parameter or description of feature Functional / electrical compatibility standard ITU-T G.704 / ITU-T G.703 Rated bitrate 2048 kbit/s ±50 ppm Input and output impedance unbalanced - 75 Ω balanced Ω Line code HDB-3 Error rate 10-9 Type of connectors unbalanced - 2 x 1,6/5,6 balanced - DB-9 "FEMLE" Maximum permissible attenuation of station side cable for 2048 kbit/s inputs at the frequency of 1024 khz amounts to 6 db. RS-232(V.28) asynchronous digital interface Parameter or feature Value of parameter or description of feature Electrical compatibility standard ITU-T V.28 Transmission speed bit/s Type of connector DB-9 "FEMLE" RS-485(EI-485) asynchronous digital interface Parameter or feature Electrical compatibility standard Transmission speed Type of connector Value of parameter or description of feature EI bit/s DB-9 "FEMLE" Ethernet 10BSE-T digital interface Parameter or feature Value of parameter or description of feature Electrical compatibility standard IEEE Transmission speed 10 Mbit/s Type of connector RJ-45 IO81-1E 33 ugust 2004

40 8.2 Mechanical parameters Parameter or feature Width Height Depth Weight Value of parameter or description of a feature 434 mm 44 mm 188 mm 2,2 kg 8.3 Electromagnetic compatibility TM-81 multiplexers meet Class requirements concerning emission of radio interferences as specified in the PN-EN standard, provided they are installed in compliance with this Manual. Warning: This is a Class device and may emit radio interferences in home environment. In such case, the user may be required to implement suitable precautions. IO81-1E 34 ugust 2004

41 8.4 Environmental requirements Operation The TM-81 devices can work in closed rooms without uniform heating, in the following environmental conditions: Environmental parameter mbient temperature Relative humidity of air Permissible value O C 80% at the temperature of +20 O C Transportation Multiplexers packed in original factory packaging can be transported by using land and air transportation means at temperatures within the range of o C. Storage TM-81 multiplexers should be stored in closed space and in the environment meeting the following requirements: Environmental parameter mbient temperature Relative humidity Vibrations Pollution level Permissible value O C 5 % up to 90 %, below +40 O C Frequency: 10 Hz up to 55 Hz, amplitude: 0,15 mm Duration: 10 cycles in three planes Typical home or office environment 8.5 Power supply Parameter or feature Version Value of the parameter or description of marking feature Rated supply voltage V 1), 0 Hz/50 60 Hz V 1), 0 Hz Input current V V V V Type of connector Power cord terminated with plug Double screw-type terminal 1) Permissible deviations: +10% for maximum value; -10% for minimum value. IO81-1E 35 ugust 2004

42 9 Scope of delivery The following items are included in the delivery: 1. TM-81.1 MULTIPLEXER 1 PC. 2. FUSE, 1,6 2 PCS. 3. BRCKETS FOR MOUNTING IN 19 RCK RH ND LH 1 PC. 4. BRCKETS FOR MOUNTING IN 21 RCK RH ND LH 1 PC COPY 5. WRRNTY CRD 1 COPY IO81-1E 36 ugust 2004

43 IO81-1E 37 ugust 2004

44 Manufactured by: LNEX S.. 8, Ceramiczna Street Lublin POLND Phone: (081) Fax: (081) web: Service Department: Phone: (081) LNEX S ll rights reserved IO81-1E 38 ugust 2004