Gestetner A193 Service Manual page 751

BIT SWITCHES
Parameter Switch 0D
FUNCTION
0
Back-to-back test mode
Bit 1 0 Setting
1 0 0 Off
0 1 Not used
1 0 ISDN L2 test mode (TE mode)
1 1 ISDN L2 test mode (NT mode)
2 Not used
to
7
Parameter Switch E
FUNCTION
0 Troubleshooing mode -
real time status codes
display
0: Off 1: On
1 Saving frames to the
protocol dump list
0: Off 1: On
2
Not used
to
7
SM
When doing a back-to-back test or doing a
demonstration without a line simulator, use
these bits to set up one of the machines in
TE mode, and the other in NT mode. After
the test, return both bits to 0.
See "Back-to-back Testing" in the
Troubleshooting section for full details.
Do not change the default settings.
If this is switched on, the status codes will be displayed in the
lower two lines of the LCD. These codes are explained in the
Troubleshooting section (G4CCU Status Codes).
Change this bit back to 0 after testing.
Keep this bit at 1 normally.
Do not change the default settings.
2-14
COMMENTS
COMMENTS
(A644) ISDN