Nortel Circuit Card Installation Manual page 896

Page 896 of 906
Table 279
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (Part 5 of 9)
Tone # Frequency (Hz)
146 850/1340
147 850/1480
148 940/1340
149 940/1210
150 940/1480
151 700/1630
152 770/1630
153 850/1630
154 (533 + 666) X 10
155 (533 + 666) X 20
156
157
158
159
160 420 X 25
161 (553 + 666) X 10
162 (553 + 666) X 20
163
164
165
166 330/440
553-3001-211 Standard 3.00
The TDS/DTR card
dB below
overload
-18/-17
-18/-17
-18/-17
-18/-17
-18/-17
-18/-17
-18/-17
-18/-17
400
820
420
420
420
480
330
-11/-14
August 2005
Precision
Ringing
Tones
÷
÷
÷
÷
÷
-23 ÷
-23 ÷
-12 ÷
-14 ÷
-12 ÷
-25 ÷
-12 ÷
-23 ÷
-23 ÷
-22 ÷
-22 ÷
-11 ÷
÷
DTMF
Digits MF Digits
8
9
0
*
#
F0
F
I