Nortel Networks 1000 - Manual (Page 1005)

Features 1005
Table 421
NTAK03, NTDK20, and NTDK97 A-Law tones and cadences (cont’d.)
Tone # Frequency (Hz)
dB below
overload
Precision
Ringing
Tones
DTMF
Digits
MF Digits
165 330 -11 ч
166 330/440 -11/-14 ч
167 1700 -19 ч
168 440 -14 ч
169 380 -8 ч
170 1400 -32 ч
171 820 -7 P
172 850 -8 1
173 420 -32 2
174* reserved 3
175 420 -6 4
176 420 -2 5
177 1020 -13 6
178 1800 -17 7
179 1400 -23 8
180 950 -29 9
181 1400 -29 0
182 1800 -29 *
183 950 -22 #
184 470 0 F0
185 940 0 F
186 1880 0 I
187 400 -22
188 420 X 25 -17
189 950 -16
190 950 -25
191 940/1630 -9/-7
192 700/1210 -9/-7
193 700/1340 -9/-7
194 700/1480 -9/-7
195 770/1210 -9/-7
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
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