Nortel Networks Circuit Card User Manual
Page 891
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The TDS/DTR card
Page 891 of 906
Circuit Card
Description and Installation
80
480
-19
ч
81
420
-9
ч
82
440
-29
ч
83
reserved
84
350/440
-17/-17
ч
85
400/450
-17/-17
ч
86
400
-17
ч
87
1400
-26
ч
88
950
-12
ч
89
1400
-12
ч
90
1800
-12
ч
91
470
0
ч
92
940
0
ч
93
1300
0
ч
94
1500
0
ч
95
1880
0
ч
96
350/440
-10/-10
97
TBD
98
TBD
99
TBD
100
TBD
Table 278
NTAK03, NTDK20, and NTDK97 µ-Law tones and cadence (Part 5 of 6)
Tone #
Frequency
(Hz)
dB below
overload
Precision
Ringing
Tones
DTMF
Digits
MF Digits
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