NEC ELECTRA ELITE IPK II, Общее описание устройства

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Document Revision 1 Electra Elite IPK II
5 - 16 Hardware Specifications
H
AP(A)-R Unit
Standard 2500 Set: 500 type network
Nominal Current: 30 mA
H AP(R)-R Unit
Standard 2500 Set: 500 type network
Nominal Current: 30 mA
Ring Signal: 56 Vac RMS @ 20 Hz
8.1.5 Series i Terminals
H
The voltage and current information for the D
term
Series i
Multiline Terminals are listed below:
Voltage: -11 ~ -48 Vdc
Maximum Current: 250 mA
H 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.
S
ECTION
9
D
IALING
S
PECIFICATIONS
9.1 Dial Pulse Address Signaling
Dial Pulse Signaling is address signaling that uses dial pulses (regular
momentary interruptions) to signal the equipment. In the Electra Elite IPK II
system, the following Dial Pulse specifications are used.
H
Pulse Rate: 0 ± 0.5 pps/20 ± 1.0 pps
H
Percent Break: 60 ± 1.5%
H
Interdigit Interval: 0 pps/20 pps 770 ms. ~ 830 ms.
Acoustical characteristics meet Electronic Industry
Association (EIA) standard proposal SP-1286 and
standard EIA RS-470.