The TDS/DTR card Page 879 of 894
Circuit Card Description and Installation
80 480 -19 ÷
81 420 -9 ÷
82 440 -29 ÷
83 reserved
84 350/440 -17/-17 ÷
85 400/450 -17/-17 ÷
86 400 -17 ÷
87 1400 -26 ÷
88 950 -12 ÷
89 1400 -12 ÷
90 1800 -12 ÷
91 470 0 ÷
92 940 0 ÷
93 1300 0 ÷
94 1500 0 ÷
95 1880 0 ÷
96 350/440 -10/-10
97 TBD
98 TBD
99 TBD
100 TBD
Table 273
NTAK03, NTDK20, and NTDK97 µ-Law tones and cadence (Part 5 of 6)
Tone #
Frequency
(Hz)
dB below
overload
Precision
Ringing
Tones
DTMF
Digits
MF Digits