Saturday, March 16, 2019

E1-Radio Interface Converter (E1-RIC)

E1-RIC:
E1-RIC is an interface converter. It converts unframed HDB3 or AMI data of ITU G.703 E1 balanced or unbalanced interface into an interchangeable DTE interface module. E1-RIC operates at 2.048Mbps. It extracts data and the clock from the G.703 interface via a jitter attenuator to meet ITU G.823 requirements.
E1-RIC acts as a line transceiver. It provides protection from over-voltage and over current stress caused by lightning power crosses and other noise sources.
E1-RIC is an interface converters that connect Ethernet LANs over E1 circuits. This allows communication between devices with E1 interfaces and equipment with V.35,X.21,V.36 or RS-530 interfaces. E1-RIC is available with several WAN (DTE) interface options.It also supports auto-negotiation, allowing connection without additional configuration.
DTE interface:
E1-RIC can be ordered with one of the following DTE interfaces:

  • V.35
  • X.21
  • V.36
  • RS-530
  • Ethernet:
    • IR-ETH(Ethernet Bridge)
    • IR-ETH/QN(Ethernet/Fast Ethernet bridge with VLAN support)
    • IR-IP (IP router)
E1-RIC Application:
E1-RIC is typically used to connect between a G.703 network and a DTE. The DTE can be a multiplexer, a bridge, a router etc. Figure below illustrates a typical E1-RIC application.

Figure: Typical Application

Block Diagram of E1-RIC:
Figure below shows the functional block diagram of E1-RIC.
Figure: E1-RIC Block Diagram
Timing Reference:
E1-RIC supports three clock modes:
  • Internal, derived from its internal oscillator.
  • External, supplied by the attached DTE.
  • Receive, recovered from the received line signal.

Technical Specification:

Front Panel Indicators:
Figure below shows E1-RIC front panel. The front panel indicators are described in table below.

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