
FCD-E1LC, FCD-T1LC
ana
ed E1/T1 or Fractional E1/T1 Access Unit
FEATURES
• Managed access units for
E1/T1 or Fractional E1/T1
• E1/T1 main link and sublink
support both framed and
unframed signals
• One or two data ports with
selectable sync data rates of
n × 56 kbps or n × 64 kbps
with serial data port
interfaces: V.35, RS-530,
V.36/RS-449, or X.21
• Optional sub-E1/T1
drop-and-insert port for
PBX connectivity
• Optional Ethernet
10/100BaseT bridge (with or
without VLAN support)
• SNMP agent
• Management:
Out-of-band via RS-232
supervisory port
Inband via TS0 over E1,
F Bit over T1, or
dedicated timeslot using
Frame Relay Protocol
(RFC 1490)
• Dial-in option for remote
out-of-band management
• Dial-out for alarm report
• Enhanced diagnostics
include:
User activated local and
remote loopbacks
Integrated BER tester
Fractional E1/T1 inband
loop
• Monitors and stores 24
hours of E1 or T1 network
performance and last
100 alarms
• Alarm mask configurable for
any alarm
DESCRIPTION
• FCD-E1LC and FCD-T1LC are
managed access units that can
convert rates and interfaces for
E1/T1 and Fractional E1/T1
services.
• FCD-E1LC and FCD-T1LC support
a single or dual serial n × 56 kbps
or n × 64 kbps data user
interface. An Ethernet LAN
interface can substitute the serial
data interface port to allow
LAN-to-LAN connectivity over
TDM media.
• FCD-E1LC and FCD-T1LC
interconnect with RAD modular
DXC (DACS) products and E1/T1
equipment from other vendors, to
support multilink star applications
such as access to SDH networks.
DXC, FCD, and Megaplex units
operate together under
centralized SNMP network
management.
• The E1 interface is compatible with
virtually all carrier-provided E1
services and meets ITU
recommendations G.703, G.704,
G.706, G.732, G.823, and G.826.
It supports both 2 and 16 frames
per multiframe, with or without
CRC-4. The E1 interface also
accepts a 2048 kbps data stream
and converts it to an ITU-T Rec.
G.703 unframed signal for transport
over the E1 main link and sublink.
Line code is HDB3. The integral
LTU ensures a range of up to 2 km
(1.2 miles) and is software
selectable.
• The T1 interface is compatible with
virtually all carrier-provided T1
services, including ASDS from AT&T
and complies with TR-62411 and
TR-62421. The T1 interface supports
D4 and ESF framing formats. Zero
suppression over the line is
software-selectable for either
transparent, B7ZS or B8ZS. The
software-selectable integral CSU
ensures a range of up to 2.1 km
(1.3 miles).
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