Unit installation

Chapter 1 Introduction Installation and Operation Manual
1-2 Overview FCD-E1
Application
Figure 1-1 shows a typical application for FCD-E1, which illustrates the utilization of
its capabilities. In this application, FCD-E1 provides an extended Ethernet
management over an E1 network.
Figure 1-1. Typical FCD-E1 Application
Features
Main Link Interfaces
The interface supports the standard E1 framing formats, i.e., comply with the
requirements of ITU-T Rec. G.704 and G.732, and support both G732N framing
(2 per multiframe) and G732S framing (16 frames per multiframe, also called
timeslot 16 multiframes), in accordance with user's selection.
FCD-E1 can also be operated in an unframed mode. In this mode, FCD-E1 accepts
an 2048 kbps data stream through a synchronous data port and converts it to an
ITU-T Rec. G.703 unframed signal for transport over the E1 main link.
FCD-E1 can be ordered with electrical or optical main link interfaces.
Electrical Main Link
The FCD-E1 main link meets the requirements of ITU-T Rec. G.703, G.704,
G.706, G.732, and G.823, and supports G732N and G732S multiframes (2 or 16
frames per multiframe, respectively), in accordance with user’s selection. The link
also supports the CRC-4 function in accordance with ITU-T Rec. G.704. The main
link can also operate in the unframed mode, to generate an ITU-T Rec. G.703
unframed signal.
The framing mode, as well as the use of the CRC-4 function, is user-selectable.