User`s guide

S21 Bit mapped configuration register
bit 012
Unused
bit 34
00
Modem ignores DTR (&D0)
01
ON-to-OFF transition on DTR cusses the modem to go
to the command state (&D1)
10 ON-to-OFF transition on DTR causes the modem to
hang up (default &D2)
11
ON-to-OFF transition on DTR causes the modem to
reset (&D3)
bit 5 0 DCD always ON (&C0)
1 DCD tracks the actual state of the data carrier
(default &C1)
bit 6
Unused
bit 7 0
Long Space Disconnect disabled (default Y0)
1 Long Space Disconnect enabled (Y1)
S22 Bit mapped configuration register
bit 01
00
Speaker volume low (L0)
01
Speaker volume low (L1)
10 Speaker volume medium (default L2)
11 Speaker volume high (L3)
bit 23
00 Speaker disabled (M0)
01 Speaker on until carrier detected (default M1)
10 Speaker always on (M2)
11 Speaker on until carrier detected but off during
dialing (M3)
B-10 Fax/Modem Command Set