TheTDS/DTR card Page255 of 544
Option11C and 11C Mini TechnicalReference Guide
159 420 -25 √
160 420 X 25 -12 √
161 (553 + 666) X 10 -23 √
162 (553 + 666) X 20 -23 √
163 420 -22 √
164 480 -22 √
165 330 -11 √
166 330/440 -11/-14 √
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
Table 8 6
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (Part6 of 10)
Tone # Frequency (Hz) dB below
overload
Precision
Ringing
Tones
DTMF Digits MF Digits