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Chapter 1 - Introduction HCD-E1
Installation & Operation Manual
1-24 Technical Specifications 01/01/01 08:07
1.4 Technical Specifications
HDSL Interface
Compliance
ETSI TR-152
Signal Format
Dual duplex, 2B1Q line coding
Line Baud Rate
584 kbaud (equivalent to 1168 kbps), for each
pair
Line Type
Two unconditioned, unloaded twisted pairs
Impedance
135Ω
Transmit Pulse Shape
As per ETSI TR-152
Transmit Signal Power
+13.5 dBm ± 0.5 dBm
Loop Loss
31 dB max at 150 kHz (584 kbaud)
Range
- Without H-RPT
- With H-RPT
Up to 3.8 km (2.4 miles) for 26 AWG (0.4 mm)
Up to 4.8 km (3.0 miles) for 24 AWG (0.5 mm)
Up to 7.2 km (4.5 miles) for 26 AWG (0.4 mm)
from central to remote unit
Up to 9.2 km (5.7 miles) for 24 AWG (0.4 mm)
from central to remote unit
Return Loss
16 dB minimum, 25 kHz to 317 kHz @ 135Ω
Differential Line Delay
Maximum 50 µs at 150 kHz
Equalizer
Automatic adaptive equalizer
Connector
RJ-45
E1 Sublink
Interface
Applicable Standards
ITU-T Rec. G.703, G.704, G.706, G.732,
G.823
Framing
- G732N, no multiframe, intended for use with
CCS, without CRC-4
- G732N, no multiframe, intended for use with
CCS, with CRC-4
- Transparent transfer of frame, for unframed
operation or use with proprietary framing
Nominal Line Data Rate
2.048 Mbps
Line Code
HDB3
Line Impedance
(user-selectable)
- 120Ω, balanced
- 75Ω, unbalanced