User`s manual

Status Registers & Result Codes 101
Command bit dec hex Function and description Ref.
DTMF tone
12 0C Reserved
5-4 0 0 Disables fax-CNG tone
detection (Default)
16 10 Reports RING for fax CNG
tone
32 20 Reports RING 1 for fax CNG
tone
48 30 Reports RING 2 for fax CNG
tone
7-6 0 0 Disables data CNG tone
detection
64 40 Reports RING for data CNG
tone
128 80 Reports RING 1 for data CNG
tone
192 B2 Reports RING 3 for data CNG
tone
S52= bit dec hex Bit-mapped register +000
4-3 0-24 0-18 Receive level adjustment
0 0 -43 dBm (Default)
8 8 -33 dBm
16 10 -26 dBm
24 18 -26 dBm
7 0 0 Select ‘Mark’ as the first signal
of the V.23 handshaking
sequence (Default)
&N12
128 80 Select ‘Space’ as the first
signal of the V.23 handshaking
sequence
&N12
S56= dec hex +050
0- 0-FF Hook flash detect time, in units