Nortel Circuit Card Installation Manual page 899

Table 279
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (Part 8 of 9)
Tone # Frequency (Hz)
209
210 1400
211 1400
212 350/420
213
214
215
216
217 350/420
218 940/1630
219 700/1210
220 700/1340
221 700/1480
222 770/1210
223 770/1340
224 770/1480
225 850/1210
226 850/1340
227 850/1480
228 940/1340
229 940/1210
dB below
overload
420
420
450
450
820
-14/-14
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
-14/-12
The TDS/DTR card
Precision
Ringing
Tones
-4
-18
-9
-9/-9
-14
-12
-22
-16
Circuit Card
Page 899 of 906
DTMF
Digits MF Digits
Description and Installation