![](http://pdfasset.owneriq.net/a/99/a9933c8c-a6bf-409f-96ad-2a6a14b125dd/a9933c8c-a6bf-409f-96ad-2a6a14b125dd-bgfe.png)
Page 254 of 544 The TDS/DTR card
553-3011-100 Standard 14.00 January 2002
140 700/1340 -18/-17 2
141 700/1480 -18/-17 3
142 770/1210 -18/-17 4
143 770/1340 -18/-17 5
144 770/1480 -18/-17 6
145 850/1210 -18/-17 7
146 850/1340 -18/-17
√
8
147 850/1480 -18/-17
√
9
148 940/1340 -18/-17
√
0
149 940/1210 -18/-17
√
*
150 940/1480 -18/-17
√
#
151 700/1630 -18/-17 F0
152 770/1630 -18/-17 F
153 850/1630 -18/-17 I
154 (533 + 666) X 10 -23
√
155 (533 + 666) X 20 -23
√
156 400 -12
√
157 820 -14
√
158 420 -12
√
Table 86
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (Part 5 of 10)
Tone # Frequency (Hz)
dB below
overload
Precision
Ringing
Tones
DTMF Digits MF Digits