Table of Contents
Advertisement
6.10
Line Termination Unit, LTU - REX-BRD0007 or ROFNB 157 02/06
Compliance to Regulations and Standards
EIA-470
Environmental
Temperature
Operating
Storage
Relative humidity
General Specifications
Length x width
Telephone Line Interface Specifications
Insulation
DC Characteristics
Range of line current
On–hook equivalent resistance : > 1M
AC Characteristics
On–hook impedance
Off–hook impedance
Ringing Detection
Ringing voltages
Frequency range
Pulse Dialing
Waveform
Selected digit N generates
Resistance during pulsing
Line voltage
DTMF Dialling
The DTMF signals are determined by the combination of the SPU and the SICOFI parameters.
Speech Coding
Method
AD Gain
DA Gain
Hybrid balance impedance
Specs-DCT1900/R8/mw
© 2000-2005
: USA
: 32 to 158°F (0 to 70°C)
: -40 to 158°F (-40 to 70°C)
: 20 to 80%, non condensing
13.5" x 7.7" (343 x 195.6mm)
: 1.5 kVac between line and secondary circuitry
: 1 kVac between line and cabinet
: 10-100mA
between wires a and b for 50 - 250 V
: > 100 k
for voice signals
> 15 k
for ringing signal
: return loss optimized against 210
: 10 - 90 Vrms
: > 20 Hz
: 60ms pulse, 40ms pulse-USA, Sweden
: N + 1 pulse or
N pulses and digit 0 generates 10 pulses
: > 5 M
and < 560
: limited to 100 - 14Vdc
: software selectable
: determined by SICOFI parameters
: determined by SICOFI parameters
: determined by SICOFI parameters
Technical Product Manual - DCT1900
Product Specifications, System Boards
+ (880
// 150 nF)
6-7
Advertisement
Chapters
Table of Contents
