Meridian Nortel 1 Option 11C Technical Reference Manual page 255

Table 86
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (Part 6 of 10)
Tone # Frequency (Hz)
159
160 420 X 25
161 (553 + 666) X 10
162 (553 + 666) X 20
163
164
165
166 330/440
167 1700
168
169
170 1400
171
172
173
174 reserved
175
176
177 1020
dB below
overload
420
420
480
330
-11/-14
440
380
820
850
420
420
420
The TDS/DTR card
Precision
Ringing
Tones
√
-25
√
-12
√
-23
√
-23
√
-22
√
-22
√
-11
√
√
-19
√
-14
√
-8
√
-32
-7
-8
-32
-6
-2
-13
Option 11C and 11C Mini
Page 255 of 544
DTMF Digits MF Digits
P
1
2
3
4
5
6
Technical Reference Guide