23
W&T
RS232 Serial Buffer
Subject to error and alteration
RS232 Serial TC buffer
W&T RS232 billing data buffers are used for buffering call and
billing data between telephone equipment and the evaluating
PC.
Function
The TC buffers are especially adapted versions of the standard
buffer for use with telephone equipment: The buffer output
port is always disabled after power-up so that incoming data
are not lost after a buffer reset. The interface to the PC must be
explicitly enabled and disabled using control sequences.
The utility „TK32.EXE“, which is available free of charge over the
Internet, allows the data to be read using any PC. The transmis-
sion parameters on the buffer must be set for 9600 baud, 8
data bits and „no parity“. After connecting the buffer to the
computer, you can start reading by using the following com-
mand line:
tk.com[1|2] [filename]
Buffer display elements
The two integrated LEDs on the buffer have the following mean-
ing:
The green Power LED indicates the presence of correct supply
voltage. The red LED indicates the memory status and recog-
nizes the following states:
OFF: The memory is empty; there are no call data.
ON: There are call data. Memory utilization is below 80% of the
available memory capacity.
FLASHING: There are call data. Memory utilization is above
80% of the available memory capacity.
Summary of Contents for RS232 88102
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