Dialing Specifications; Dial Pulse Address Signaling; Dual-Tone Multifrequency (Dtmf) Address Signaling - NEC UNIVERGE SV8100 System Hardware Manual

Issue No. 1.5
6.6
2 - 22
AP(R)-R( ) Unit
Nominal Current: 30 mA
Ring Signal: 56 Vac RMS @ 20 Hz

Dialing Specifications

6.6.1

Dial Pulse Address Signaling

Dial Pulse Address Signaling uses dial pulses (regular momentary
interruptions) to signal the equipment. The following Dial Pulse
specifications are used in the UNIVERGE SV8100/SV8300 system.
Pulse Rate: 10 ± 0.5 pps/20 ± 1.0 pps
Percent Break: 60 ± 1.5%
Interdigit Interval: 0 pps/20 pps 770 ms. ~ 830 ms.
6.6.2

Dual-Tone Multifrequency (DTMF) Address Signaling

DTMF signaling includes 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 UNIVERGE SV8100/SV8300
system, the following DTMF specifications are used.
Frequencies
Two sinusoidal frequencies are provided, one from the high
frequency group and one from the low frequency group.
Frequency Deviation: Less than ±1.5%
Signal Level:
Nominal level per frequency: -6 ~ -4 dBm
Minimum level per frequency
Low Group: -10 dBm
High Group: -8 dBm
Maximum level per frequency: 0 dBm
Rise Time: Within 5 ms.
UNIVERGE SV8100/SV8300
SV8100 System Specifications