User’s Manual of netMod Network Termination Unit
TECHNICAL CHARACTERISTICS
U-line
♦ In compliance with
: ETSI ETR 080
♦ Line code
: 2B1Q
♦ Output Level
: 2.5V peak at 135Ω Load
♦ Carrier
: twisted copper pair
♦ Bit rate
: 160 kbps
♦ Net bit rate
: 144 kbps
♦ Interface
: Telephone jack (RJ-11)
S-bus
♦ In compliance with
: ETSI 300 012, ITU-T.430
♦ Line code
: AMI
♦ Output Level
: 750mV peak
♦ Carrier
: 4-wire passive bus
♦ Bit rate
: 192 kbps
♦ Interface
: telephone 8-pin jack connector (RJ-45)
a/b Line
♦ In compliance with
: ITU-T Q.552
♦ Dialling
: DTMF/Pulse signalling
♦ Voice encoding
: A-law PCM
♦ VF output level
: -7dBr
♦ VF input level
: 0dBr
♦ Subscriber loop voltage
:
ON-HOOK: 48V (±2V)
♦ Subscriber loop current
:
≥20 mA
♦ Line termination
impedance
: 600 ohm
♦ Ringing frequency
: 25Hz
♦ Charging Pulses
: 16kHz
♦ Interface
: telephone jack (RJ-11)
♦ CLIP supplementary
service according to
: ETS 300 089, ETS 300 659-1, V.23 signalling
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