The TDS/DTR card
Page 259 of 544
Table 86
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (Part 10 of 10)
Precision
dB below
Tone #
Frequency (Hz)
Ringing
DTMF Digits
MF Digits
overload
Tones
241
850 X 1210
-17/-15
7
Option 11C and 11C Mini
Technical Reference Guide