Gestetner A193 Service Manual page 668

DEDICATED TRANSMISSION PARAMETERS
4.2 PARAMETERS
The initial settings of the following parameters are all FF(H) - all the
parameters are disabled.
Switch 01
CCITT T1 time (for PSTN G3 mode)
If the connection time to a particular terminal is longer than the NCU parameter setting,
adjust this byte. The T1 time is the value stored in this byte (in hex code), multiplied by 1
second.
Range:
1 to 127 seconds (01h to 7Fh)
00h or FFh - The local NCU parameter factory setting is used.
Do not program a value between 80h and FEh.
Switch 02
FUNCTION
0 Tx level
to Bit 4 3 2 1
4 0 0 0 0
0 0 0 0
0 0 0 1
0 0 0 1
0 0 1 0
:
:
0 1 1 1
1 1 1 1 1
5 Cable equalizer
to Bit 7 6 5
7 0 0 0
0 0 1
0 1 0
0 1 1
1 1 1
SM
FUNCTION AND COMMENTS
If communication with a particular remote
terminal often contains errors, the signal level
0 Setting
0 0 may be inappropriate. Adjust the Tx level for
1 -1 communications with that terminal until the
0 -2 results are better.
1 -3
0 -4 When disabled, the NCU parameter 01 setting is
used.
1 -15 Note: Do not use settings other than listed on
Disabled the left.
Use a higher setting if there is signal loss at
Setting higher frequencies because of the length of wire
None between the modem and the telephone
Low exchange when calling the number stored in this
Medium Quick/Speed Dial.
High
Disabled Also, try using the cable equalizer if one or more
of the following symptoms occurs.
•Communication error with error codes such as
•Modem rate fallback occurs frequently.
Note: Do not use settings other than listed on
the left.
COMMENTS
0-20, 0-23, etc.
4-64 (A639)