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

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.