NEAX2000 IVS
2
General Description
Page 80
NDA-24293, Issue 2
Rotary Dial Pulse and DTMF Signaling
Chapter 8 System Performance
Rotary Dial Pulse and DTMF Signaling
1. Receiving Conditions:
Dial Speed:
9 ~ 11 pps
Break Ratio:
55 ~ 77% (10 pps)
Minimum Interdigital
Pause:
192 ms
Switch Hook Flash:
Detection:
310 ~ 1610 ms
2. Sending Conditions
Dial Speed:
10 pps (±0.8 pps)
Break Ratio:
67 ± 3%
Minimum Interdigital
Pause:
800 ms
3. DTMF Signaling
Frequency Combinations
1. Receiving Conditions
(Measured at Receiver Input)
Signal Duration:
More than 40 ms
Interdigital Pause:
More than 40 ms
Signal Level:
0 ~ -25 dBm
2. Sending Conditions
Signal Duration:
More than 64 ms
Inter-digital Pause:
More than 64 ms
Signal Level:
Low Frequency: -10 dBm
High Frequency: -9 dBm
HIGH/LOW
1209 H
Z
1336 H
Z
1477 H
Z
697 Hz
1
2
3
770 Hz
4
5
6
852 Hz
7
8
9
941 Hz
*
0
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