Specifications

AN93
76 Rev. 0.8
Table 43. Register U4D Bit Map
Bit Name Function
15 Reserved Read returns zero.
14 TOCT Turn Off Calling Tone.
0 = Disable.
1=Enable.
13 Reserved Read returns zero.
12 NHFP No Hook-Flash Pulse.
0 = Disable.
1=Enable.
11 NHFD No Hook-Flash Dial.
0 = Disable.
1=Enable.
10 CLPD Check Loop Current Before Dialing.
0 = Ignore.
1=Check.
9 Reserved Read returns zero.
8 FTP Force Tone or Pulse.
0 = Disable.
1=Enable.
7 SPDM Skip Pulse Dial Modifier.
0 = No.
1=Yes.
6 Reserved Read returns zero.
5GT181800 Hz Guard Tone Enable.
0 = Disable.
1=Enable.
4GT55550 Hz Guard Tone Enable.
0 = Disable.
1=Enable.
3CTECalling Tone Enable.
0 = Disable.
1=Enable.
2 Reserved Read returns zero.
1 Reserved Read returns zero.
0 Reserved Read returns zero.