![Ericsson HL950 Скачать руководство пользователя страница 16](http://html1.mh-extra.com/html/ericsson/hl950/hl950_administrators-manual_2423545016.webp)
Multi Service Edge Device HL950
Administrator’s Guide
EN/LZT 108 5995 R3
Page 16 (159)
June 2003
2.3.2 WIF
Module
2.3.2.1 SHDSL
Module
This network interface module is designed according to ITU-T G.991.2 and provides a dual SHDSL
connection for up to 4.6 Mbps full duplex 2- or 4-wire twisted pair (RJ-45). 4-wire mode over a single
cable is supported in connector 0.
2.3.3 LIF
Modules
The HL950 is delivered with either an E1 Interface Module or a V.35/V.36/X.21 Interface Module for
connection to local equipment. For all local interfaces, the HL950 will act as a DCE unit.
2.3.3.1 E1
Interface
Module
This interface module is a single E1 connection according to ITU Rec. G.703 and provides both 75
ohm unbalanced (DIN 1.0/2.3) and 120 ohm balanced (RJ-45) modes.
NOTE!
The LIF E1 interface belongs to secondary circuit and can only be used for in-house
connections.
2.3.3.2 Serial
Module
This user interface provides a single port for V.35/V.36/X.21 n x 64 Kbps synchronous services. It
includes a 60-pin universal serial connector, which through different cable adapters provide the
following interfaces:
!
V.35 – 34-pin (Winchester female) connector ISO 2593
!
V.36 – 37-pin (Sub-D female) connector ISO 4902
!
X.21 – 15-pin (Sub-D female) connector ISO 4903.
2.3.4 TIF
Modules
2.3.4.1
FxS Interface Module
The FxS interface module provides 8 POTS interfaces to which it is possible to connect analog
telephones (station sets). The station sets are connected via customer-owned telephone pairs within the
same facility that the HL950 equipment is located in. In case of power failure, the FxS interface
module is equipped with an automatic line switchover to an analog trunk (life line).
2.3.5 Power
Supply
The HL950 operates in the 100-240 volt range (50-60 Hz) with a maximum operating power
consumption of 45 watt.
The HL950 may be connected to mains power via an Uninterruptible Power Supply (UPS) for higher
availability.