Quantum 560UF/L - Manual (Page 33)

APPENDIX C. S REGISTERS
ACTIVE Professional External Modem User’s Manual
29
S18 * Test timer Default : 0
Sets the length of time in second which the modem conducts a test
before returning to the command mode. If this register is zero, the test
will not automatically terminate; the test must be terminated from the
command mode by issuing an AT&T0 or ATH command.
S19 Reserved
S20 Reserved
S21 * Bit mapped options
Bit 0
0 AT&J0 (Default)
1 AT&J1
Bit 1 Reserved
Bit 2
0 AT&R0
1 AT&R1 (Default)
Bit 3,4
0 AT&D0
1 AT&D1
2 AT&D2 (Default)
3 AT&D3
Bit 5
0 AT&C0
1 AT&C1 (Default)
Bit 6
0 AT&S0 (Default)
1 AT&S1
Bit 7
0 ATY0 (Default)
1 ATY1
S22 * Bit mapped options
Bit 0,1
0 ATL0
1 ATL1
2 ATL2
3 ATL3
Bit 2,3
0 ATM0
1 ATM1
2 ATM2
3 ATM3
Bit 4-6
0 ATX0
4 ATX1