Nortel Networks 1000 User Manual
Page 1001
![background image](/manuals/193391/1001/background.png)
Features
1001
Table 420
NTAK03, NTDK20, and NTDK97 Mu-Law tones and cadence (cont’d.)
Tone #
Frequency
(Hz)
dB below
overload
Precision
Ringing
Tones
DTMF
Digits
MF Digits
77
400/450
-14/-14
ч
78
480/620
-19/-19
ч
79
440/480
-19/-19
ч
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
101
600
-19
ч
102
800
-19
ч
103
1400
-23
ч
104
820
-7
Note:
Tones #1 - 16 (inclusive) and #234 - 249 (inclusive) are included
for Norwegian and Malaysian specifications. Tones marked with * are
not supported by IP sets and therefore should not be selected in any
system that has IP sets.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.