Data Communications Hardware
Analog-to-Digital Settings
Table 2-2 Modem Option Settings for Digital-to-Analog Modem
Pool Operation
Bit Number:
1
Switch
1
L
2
L
3
D
4
D
5
U
7
on
L = left
U = up
R = right
D = down
Unplug the modem from the wall outlet; then plug it back in. Set switch 1,
7.
bit 2 to the left to store the switch settings in the modem's memory. The
modem is now operating in the AT&T command protocol.
8.
Enter command mode, set the options, and save the options in protected
memory to prevent loss of settings in case of a power failure:
Type AT and press Enter to enter the local mode.
Type AT&D2 and press Enter. Option set: drop call when DTR low.
Type AT&C1 and press Enter. Option set: data carrier detect follow call.
Type ATS0=1 and press Enter. Option set: Auto Answer.
Type ATQ0 and press Enter. Option set: enable result codes (factory
setting).
Type AT&W and press Enter to save the options in protected memory
and prevent loss of settings in case of a power failure.
ISDN 7500B Data Module Option Setting
Use the following procedure to prepare the ISDN 7500B Data Module for
operation in an analog-to-digital modem pool:
1. Set the DCE/DTE flip board to the DTE position.
2. Use the front panel controls on the data module to see the following.
2
3
4
R
L
R
R
R
L
L
D
D
D
U
D
D
D
D
D
U
U
U
on
5
6
7
8
R
L
L
L
L
L
L
U
D
D
U
D
D
D
D
D
2-9
Modem Pools
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