Specifications

Chapter 1 Introduction Installation and Operation Manual
1-2 Typical Applications FCD-E1LC Ver. 1.0
 10/100BaseT Ethernet bridge with VLAN support, for direct connection to
LANs.
Both optional ports can be added to the same FCD-E1LC unit.
In this manual, the generic term FCD-E1LC is used when the information is
applicable to all the FCD-E1LC versions. Information applicable to a specific
version is explicitly identified.
Main Features
The FCD-E1LC main and sublink interfaces are compatible with virtually all
carrier-provided E1 services, meeting all the applicable requirements of
ITU-T Rec. G.823, G.703, G.704, G.706 and G.732. The interfaces support either
2 or 16 frames per multiframe, with or without CRC-4. Line code is HDB3.
Timeslot assignment is programmable, allowing data from each user port to be
placed into user-selectable timeslots.
FCD-E1LC supports various timing modes, to meet the specific requirements of
user’s applications and enable hierarchical dissemination of timing within the
network. Its nodal timing can be locked to:
• The clock signal recovered from the main link
• The optional sublink
• The receive clock of a serial data channel.
Alternatively, an internal oscillator can provide the timing.
FCD-E1LC operation can be controlled and monitored by means of supervision
terminals, Telnet hosts, and SNMP management stations. The management
communication can be either out-of-band, e.g., via connections to the FCD-E1LC
serial management port (either directly or through modem links), or inband with
the management traffic carried by the main link. These capabilities ensure that
FCD-E1LC units can be fully managed from one or more remote locations, in
accordance with the specific requirements of the using organization.
FCD-E1LC has a universal power supply that can operate on a wide range of AC
and DC power sources, including 100 to 240 VAC, 50/60 Hz and -48/-60 VDC, and
has low power consumption.
The FCD-E1LC is available as a standalone unit, intended for installation on
desktops or walls. An optional rack mount adapter kit enables installing one or
two FCD-E1LC units in a 19-inch rack, occupying only 1U.
Note