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The TDS/DTR card Page 897 of 906
Circuit Card Description and Installation
167 1700 -19 ÷
168 440 -14 ÷
169 380 -8 ÷
170 1400 -32 ÷
171 820 -7 P
172 850 -8 1
173 420 -32 2
174 reserved 3
175 420 -6 4
176 420 -2 5
177 1020 -13 6
178 1800 -17 7
179 1400 -23 8
180 950 -29 9
181 1400 -29 0
182 1800 -29 *
183 950 -22 #
184 470 0 F0
185 940 0 F
186 1880 0 I
187 400 -22
Table 279
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (Part 6 of 9)
Tone # Frequency (Hz)
dB below
overload
Precision
Ringing
Tones
DTMF
Digits
MF Digits