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Electra Elite
System Hardware Manual
4.6
Dialing Specifications
4.6.1
Dial Pulse Address Signaling
Dial Pulse Address Signaling uses dial pulses to signal
the equipment. In the Electra Elite 48 system, the
following Dial Pulse specifications are used.
4.6.2
Dual-Tone Multifrequency (DTMF) Address Signaling
DTMF signaling describes push button or Touchtone
dialing. When a key on a telephone is pushed, two tones
(one high frequency and one low frequency) are
provided. In the Electra Elite 48 system, the following
DTMF specifications are used.
AP(A)-R Unit
Standard 2500 Set:
Nominal Current:
AP(R)-R Unit
Standard 2500 Set:
Nominal Current:
Ring Signal:
Pulse Rate:
Percent Break:
Interdigit Interval:
Frequencies
Two sinusoidal frequencies are provided, one from
the high frequency group and one from the low
frequency group.
Frequency Deviation: Less than ±1.0%
Signal Level:
Nominal level per frequency: -6 ~ -4 dBm
Minimum level per frequency:
Low Group:
High Group:
Maximum level per frequency: 0 dBm
Rise Time: Within 5 ms.
500 type network
30 mA
500 type network
30 mA
56 Vac RMS @ 20 Hz
10 ± 0.5 pps/20 ± 1.0 pps
60 ± 1.5%
10 pps/20 pps 770 ~ 830 ms.
-10 dBm
-8 dBm
Issue 6
2 - 13
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