TELE-X - a Satellite System for TV and Data Communication ...

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esult in a printout and are recorded on counters. After the recording the lines in question are disconnected unless some other action has been ordered. Instead of being disconnected the connection can be handled as programmed. Fig. 8 Examples of fault and statistics printouts Fig. 9 Construction practice LTR 331 is used for portable equipement Start/stop Start and stop can be given for: - control individuals - test batches - all programmed and open control individuals. At start up, the system can be ordered to reset statistics counters and fault report buffers for the control individuals being started. Start and stop at preset times can also be arranged by means of commands. Supervision For LPB110 different types of supervision are used. The generated traffic, and the internal functions are monitored, for example the syntax checking of control programs and the monitoring of hardware. Faults detected during traffic generation result in fault printouts, for example if a wrong backward signal is received with MFC signalling or a dialling tone is not received for a local call. In other cases alarm printouts are initiated. In LPB110 it is possible to control the handling of different fault situations during the traffic processing. All faults that are detected during traffic handling If a fault is detected in LPB110 a hardware diagnostic program can be started. A printout specifies the faulty board. During the traffic handling, statistics are collected per test batch, per control individual and for the total amount of traffic. The statistics can be output by means of a command. Periodical statistical printouts can also be ordered, fig.8. Construction practice The construction practice used for LPB 110 is LTR 331, characterized by its compactness. The system includes two units, built up of magazines of 12BM (approx. 50cm wide and 25cm high), the first with one magazine and the second with three stacked magazines, fig.9. The top and bottom covers are removed when the unit is used, and the resultant chimney effect ensures good cooling. Forequipment with very high powerdissipation a fan unit can be added, which provides forced cooling. The equipment is delivered in transport cases in accordance with the Ericsson standard for test equipment. The units are provided with sturdy handles and can easily be carried by two men.
37 Fig. 10 LPB 110 used in an AXE 10 exchange Technical data for LPB 110 Number of lines Number of signalling system types used simultaneously Power Construction practice Processor Programming language Operating system Memory medium I/O interface I/O device Interworking with AX Commands Printouts Statistics printouts Signalling systems =£256 S24 -48 V DC and mains LTR 331 APN 167 ERIPASCAL ERIOS 514" floppy discs CCITT V.24 Digital LA 12 (Standard) CCITT V.24 CCITT MML Fault printouts Larm printouts No. of initiated calls No. of terminated calls No. of faults No. of faults per type Analog subscriber line signalling Line signalling E&M Register signalling R1, R2 and decadic CCITT no. 6 CCITT no. 7 PCM 32 and 24 channels Starting up The task of putting LPB 110 into operation can be divided into a hardware and a software stage. The hardware stage comprises voltage connection, internal cabling and connection to the test object. The exchange voltage is connected to the central and application parts, and mains voltage to the I/O devices. The internal cabling consists of bus cabling between the different units. The software stage consists of loading the LPB 110 software from floppy disc units and loading hardware data, control programs and control data. The hardware data constitute the software reproduction of the hardware towards which the programs work. It can be compared to the exchange data in a telephone exchange. The data remain the same as long as no change is made in the hardware configuration. The control programs are transcripts of signalling diagrams for the signalling systems included in LPB 110, and are supplied individually for each LPB 110. If necessary, modifications to control programs and new control programs can be input direct from the typewriter. Control data are not supplied with the equipment but are compiled by the user. The control data specify, for example, which subjects are to be included in a test batch, the handling of fault situations, the number of connections and the type of printouts. The control data are stored on floppy discs for quick loading when required. After connection the testing can start. The start command is given from the typewriter or any other I/O device. LPB110forAXE10 LPB 110 is equipped with an interface for connection to the I/O system of AXE 10 for the purpose of testing the exchange. This means that commands can be transmitted from LPB 110, both manually from the terminal and automatically from user prog rams In the first case the operator works towards AXE 10 in the same way as from an ordinary terminal, and in the second case user programs in LPB 110 can, for example, initiate tracing, and the result can be received by and utilized in the user program. Communication with LPB 110 can also take place from a terminal in AXE 10. This means, for example, that LPB110 can be placed at the MDF and be operated by an operator in the control room. This provides great flexibility in the testing. Summary The demand for short test times and powerful test functions, and the trend towards testing of complete systems have led to the development of the general test system LPB 110 forthe generating of controlled test traffic. The modular structure of the system makes it readily adaptable for different applications, both as regards technology and operation. The system has a wide range of applications in design, production and installation testing.
Page 1: ERICSSON REVIEW Integrated Maintena
Page 5 and 6: ERICSSON REVIEW Number 1 1983 Volum
Page 7 and 8: The unique facility of a satellite
Page 9 and 10: Technical data for a station Antenn
Page 11 and 12: Technical data for the feeder link
Page 13 and 14: 9 Fig. 7 Mixer and preamplifier The
Page 15 and 16: MATS ENEBORG Fibre Optics and Line
Page 17 and 18: 13 Fig. 6 The structure of system Z
Page 19 and 20: 15 Fig. 9 Part of the junction netw
Page 21 and 22: Fig. 11 Part of an urban and trunk
Page 23 and 24: 19 MATS ENEBORG BJORN JOHANSEN Depa
Page 25 and 26: Fig. 6 An example of a printout of
Page 27 and 28: Technical data for ZAN 101 Maximum
Page 29 and 30: Fig. 14 The Transmission maintenanc
Page 31 and 32: 27 BJORN LENGQUIST PER AKE WIBERG E
Page 33 and 34: 29 Supervision of the digital inter
Page 35 and 36: 31 ules can be used to successively
Page 37 and 38: BENGTJANSSON KENT JOHANSSON TOMMY O
Page 39: 35 The control individuals are divi
Page 43 and 44: 39 BENGT LAGERSTEDT Public Telecomm
Page 45 and 46: 41 Fig. 6 With multiplexer ZAH 1.5/
Page 47 and 48: Fig. 10 In this example of the use
Page 49 and 50: 45 HARALD BRANDT ALEKSANDER MARLEVI
Page 51 and 52: 47 Fig. 5 Stored program controlled
Page 53 and 54: 49 quency jumps and no transmission
Page 55 and 56: Hotel Communication System Robert D
Page 57 and 58: 53 Fig. 3 The answer telephones at
Page 59 and 60: 55 The capacity of the hotel PABX i
Page 61 and 62: 57 Fig. 7 The hotel computer, Erics
Page 63 and 64: Hardening of Telecommunication Netw
Page 65 and 66: Fig. 3 The electrical and magnetic
Page 67 and 68: 63 Rise Duration time Time Fig. 7 D
Page 69 and 70: 65 Component Microwave diodes Digit
Page 71 and 72: 67 electrical safety regulations, a
Page 74: ERICSSON ISSN 0014-0171 Telefonakti

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