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

Issue 2.0
6.6
2 - 34
Maximum Current: 250 mA
Acoustical characteristics meet Electronic Industry
Association (EIA) standard proposal SP-1286 and
standard EIA RS-470.
Voltage, current, and ring signal information for Single Line Telephone

equipment, AP(A)-R Unit, and AP(R)-R Unit are the same a those listed
in the previous paragraph.

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 system.
Pulse Rate: 10 ± 0.5 pps/20 ± 1.0 pps

Percent Break: 60 ± 1.5%

Interdigit Interval: 0 pps/20 pps 770ms. ~ 830ms.

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 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 5ms.

Duration of Dual Frequency Signal:

110 ms. default/60ms. minimum
Interdigital Time: 140ms. default/45ms. minimum
UNIVERGE SV8100
SV8100 System Specifications