AT&T 555-230-894 用户手册
Option Switch Settings
H-18
September 1995 Issue 1
Synchronous 2224A Modem Option
Settings
Settings
When the synchronous 2224A modem is used with a modular trunk data module,
set the options on the modular trunk data module as shown in Table H-14. All
factory-furnished options should be set on the 2224A modem with the following
exceptions:
set the options on the modular trunk data module as shown in Table H-14. All
factory-furnished options should be set on the 2224A modem with the following
exceptions:
■
Interface speed indication
—
DUAL-1200/2400
■
Interface speed selection
—
DUAL-1200/2400
■
Analog (AL) and Test Mode interface assignments
—
AL-18 and TM-25
■
Interface control remote digital loopback
—
IN
■
1200/2400 bps operation
—
SYNC
■
Transmitter timing
—
EXT
Table H-14.
Option Switch Settings on Modular Trunk Data
Module (MTDM) Used with Synchronous 2224A
Modem
Modem
Switch
Setting
1200 baud
ON
2400 baud
ON
SW
ON
SIGLS
ON
CI12
ON
TM25
ON
CN18
ON
CH23
ON
RL21
ON
SYNC
ON
CH19
ON
All Others
OFF