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APPENDIX C. S REGISTERS
ACTIVE Professional External Modem User’s Manual
28
S14 * Bit mapped option
Bit 0
0 ATT (Default)
1 ATP
Bit 1 0 ATE0
1 ATE1 (Default)
Bit 2
0 ATQ0 (Default)
1 ATQ1
Bit 3
0 ATV0
1 ATV1 (Default)
Bit 4,5,6
0 AT&K0
3 AT&K3 (Default)
4 AT&K4
5 AT&K5
6 AT&K6
Bit 7 Originate/answer
0 Answer
1 Originate (Default)
S15 Reserved
S16 Bit mapped test option
Bit 0 Local analog loopback (AT&T1)
0 Disabled
1 Enabled
Bit 1 Not used
Bit 2 Local dig ital loopback (AT&T3)
0 Disabled
1 Enabled
Bit 3 Remote digital loopback status
0 Loopback off
1 Loopback in progress
Bit 4 Remote digital loopback (AT&T6)
0 Disabled
1 Enabled
Bit 5 Remote digital loopback with self test (AT&T7)
0 Disabled
1 Enabled
Bit 6 Local analog loopback with self test (AT&T8)
0 Disabled
1 Enabled
Bit 7 Not used
S17 Reserved