FCD-E1LC, FCD-T1LC
Managed E1/T1 or Fractional E1/T1 Access Unit

• FCD-E1LC and FCD-T1LC

interconnect with RAD modular
DXC (DACS) products and E1/T1
equipment from other vendors, tosupport multilink star applications
such as access to SDH networks.
DXC, FCD, and Megaplex units
operate together undercentralized SNMP network
management.

• The E1 interface is compatible withFEATURES• Managed access units forE1/T1 or Fractional E1/T1
service• E1/T1 main link and sublink
support both framed andunframed signals• One or two data ports withselectable sync data rates ofn × 56 kbps or n × 64 kbps
with serial data portinterfaces: 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 (withor 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 andremote loopbacks
Integrated BER tester
Fractional E1/T1 inbandloop• Monitors and stores
24 hours of E1 or T1
network performance andlast 100 alarms• Alarm mask configurable forany alarm

DESCRIPTION• FCD-E1LC and FCD-T1LC aremanaged access units that canconvert rates and interfaces forE1/T1 and Fractional E1/T1services.

• FCD-E1LC and FCD-T1LC support
a single or dual serial n × 56 kbps
or n × 64 kbps data userinterface. An Ethernet LANinterface can substitute the serial
data interface port to allow
LAN-to-LAN connectivity overTDM media.

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 fortransport over the E1 main link andsublink. Line code is HDB3. The
integral LTU ensures a range of up
to 2 km (1.2 miles) and issoftware 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 framingformats. Zero suppression over theline is software-selectable for eithertransparent, B7ZS or B8ZS. The
software-selectable integral CSU
ensures a range of up to 2.1 km(1.3 miles).

• The optional sub-E1 port can be

configured to work without
CRC-4, while the E1 main link is
working with CRC-4. This enables
connection of E1 equipment notsupporting CRC-4, over an E1
network that is working withCRC-4.

FCD-E1LC, FCD-T1LC
Managed E1/T1 or Fractional E1/T1 Access Unit
• The optional sub-T1 port can be

configured with D4 or ESF framing,
while the T1 main link framing isESF. This enables connection ofT1 D4 equipment over an ESF T1network.
• The unit can be programmed toassign data automatically from eachdata port into consecutive timeslots.
The user can also assign timeslots
manually.

• Multiple clock source selection

ensures maximum flexibility forsupporting different applications.
Timing for the E1/T1 main link
and sublink may come from therecovered receive clock, aninternal oscillator, or one of thedata ports.
• Front panel LEDs indicate alarms,
E1/T1 signal loss, and diagnostic
loopback operation. Rear panel
LEDs on the Ethernet interface
modules indicate LAN status andactivity.

• FCD-E1LC and FCD-T1LC arecompact standalone units. A rack
mount adapter kit enables
installation of one or two (side-byside) units in a 19-inch rack. (seeOrdering).

APPLICATIONUSER INTERFACESMANAGEMENT & MAINTENANCE• FCD-E1LC and FCD-T1LC feature• Status and diagnostic information

the following user interfaces:
Serial data interfaces: RS-530,V.35, X.21, V.36/RS-449
Ethernet 10/100BaseT LAN
interface module with a built-in
bridge (IR-ETH/QN).

• FCD-E1LC and FCD-T1LC haveis defined, configured, andmonitored using one of thefollowing methods:
ASCII terminal connected to theasync control port
SNMP management
Telnet.

synchronous data ports that
operate in the following clock
modes:
DCE: The FCD units provide
both transmit and receive clocks
to the user equipment, with
optional sampling of theincoming data with an invertedclock.
DTE1: The FCD units provide
the transmit clock. The attacheduser equipment provides thereceive clock.
DTE2: the attached userequipment provides bothtransmit and receive clocks.

• FCD-E1LC and FCD-T1LC have

• The IR-ETH/QN interface module

are available for retrieval throughthe supervision terminal, a Telnet
host, or a RADview management
station.

has a 10/100BaseT interface that
supports VLAN frames,autonegotiation, fault propagation,
and automatic learning and aging.
The module transparently
connects FCD-E1LC andFCD-T1LC to remote LANs overE1/T1 links. It filters Ethernet
frames and forwards only framesthat are destined for the WAN.

an internal SNMP agent that ismanaged by any generic SNMP
station or by the RADview SNMP
network management application.

• The units support both dial-in anddial-out modem connections
through the serial RS-232 port, byusing SLIP or PPP protocol or acommand line interpreter on an
ASCII terminal. These out-of-bandconnections can be used forremote configuration andmonitoring, as well as for sending
callout alarm messages.

• Up to 100 time-stamped alarms

FCD-E1LC, FCD-T1LC
Managed E1/T1 or Fractional E1/T1 Access Unit• Inband management can be

performed either by dedicatedtimeslot using standard Frame
Relay protocol (RFC 1490), or byusing the spare Sa bits on Timeslot
0 for FCD-E1LC or FDL bits for
FCD-T1LC. This allows the user tosetup, monitor, and run
diagnostics on the remote unit. If
spare bits on TS0 or FDL are used
for inband access, they must be
passed transparently end-to-end.

• Maintenance capabilities includeuser-activated local and remoteloopbacks on the E1/T1 main link,
sublink, and data ports. The user
can activate a BER test on themain link. Also, the main link
responds to an ANSI FT1 RDL(T1E1.2/93-003) inband loop
code, or a user-configured patterngenerated by a remote FCD-E1LC,FCD-T1LC, or DXC in a specificbundle of timeslots allocated onlyto that port. The user can also
define BER or inband tests to run
on any timeslot.

• E1 network statistics are stored inmemory, according to RFC 1406.
Statistical information can beretrieved locally through thecontrol port.

• T1 network statistics are stored inmemory, according to ANSI andAT&T standards. The statisticalinformation may be retrieved by
the service provider (ANSI only) or
locally through the control port.

SPECIFICATIONS
E1 MAIN LINK AND SUBLINK• Framing

256N (no MF, CCS)
256N (no MF, CCS) with CRC-4
256S (TS16 MF, CAS)
256S (TS16 MF, CAS) with
CRC-4Unframed• Bit Rate

2.048 Mbps

• Line CodeAMI• Zero Suppression
HDB3• Line Impedance

120Ω, balanced75Ω, unbalanced• Transmit Timing

Locked to the system clock• Signal Level

Receive:
0 to –10 dB without LTU
0 to –36 dB with LTUTransmit:±3V (±10%), balanced±2.37V (±10%), unbalanced• Jitter Performance

As per ITU G.823, ETSI TBR-12
and TBR-13• Connectors
RJ-45, 8-pin, balanced
Two BNC coaxial, unbalanced,
using adaptor cable (seeOrdering)• Compliance

ITU G.703, G.704, G.706, G.732,G.823, G.826• Performance Monitoring

Local support of CRC-4
Full statistical diagnostics
according to RFC-1406

T1 MAIN LINK AND SUBLINK• Framing

D4ESF
Unframed (main link only)• Bit Rate

1.544 Mbps

• Line CodeAMI• Zero Suppression

Transparent, B7ZS, B8ZS

• Line Impedance
100Ω, balanced• Transmit Timing

Locked to the system clock• Signal Level

Receive:
0 to –10 dB without CSU
0 to –36 dB with CSU

Transmit:0, –7.5, –15, –22.5 dB with CSU±3V,±10% soft adjustable at
0 to 655 ft without CSU• T1 Jitter Performance

As per AT&T TR-62411• Connector
RJ-45, 8-pin, balanced• Compliance

AT&T TR-62411, AT&T 54016,
AT&T TR-62421, ANSI T1.403• Performance Monitoring

Local support of ESF diagnostics
according to AT&T PUB 54016Full statistical diagnostics
according to ANSI T1.403-198

DATA PORTS• Connectors
D-type 25-pin RS-530, female
converted via adaptor cables toV.35
X.21
V.36/RS-449 (see Ordering)• Data Raten × 56/64 kbps (n=1 to 24) for T1
n × 64 kbps (n=1 to 31) for E1• Clock Modes

DCE: RX and TX clock to userdevice
DTE1: RX clock to user device;
TX clock from user device(not for X.21)
DTE2: RX and TX clock from userdevice (not for X.21)• Control Signals

CTS follows RTS or constantly
ON, soft-selectableDSR constantly ON, unless intest mode
DCD constantly ON, unless insync loss

ETHERNET BRIDGE PORT

• Interface and Connector

10/100BaseT (UTP) with shielded
RJ-45• Maximum Frame Length
1536 bytes• LAN Table

2048 MAC addresses

FCD-E1LC, FCD-T1LC
Managed E1/T1 or Fractional E1/T1 Access Unit
• Throughput
4,000 pps

• Latency

300 µsec (64-byte frame size, 2M
LAN rate)• Buffer

120 frames• Line Code10BaseT: Manchester
100BaseT: MLT3

• Wan Protocol
HDLC

DIAGNOSTICS• Main E1/T1 link
Local loopback
Remote loopbackBER test
Code-activated inband loopback
per data port
Code-activated T1 network
loopback (FCD-T1LC only)• Sublink
Local loopback
Remote loopback
Code-activated T1 network
loopback (FCD-T1LC only)• Data Port
Local loopback
Remote loopback
GENERAL• System Clock

Internal clock:±50 ppm
Loopback timing:±130 ppm
External timing from data port:±130 ppm• Management PortInterface and connector:
RS-232, 9-pin D-type, female
Format: Asynchronous
Baud rate: 1.2–115.2 kbps,
autobaud
Character: 8-bit no parity, 7-bit
odd or even parity• Timeslot Allocation

Consecutive (bundled)
User-defined• Indicators

General: PWR (green), TST(yellow), ALM (red)Main/Sub-E1: LOC SYNC LOSS(red), REM SYNC LOSS (red)Main/Sub-T1: RED ALARM (red),
YEL ALARM (yellow)• PhysicalHeight: 4.4 cm (1.7 in)
Width: 24.0 cm (9.4 in)
Depth: 17.0 cm (6.7 in)
Weight 0.8 kg (1.8 lbs)
• Power
AC/DC: 100 to 240 VAC,
–48 to –60 VDC, nominal
Power consumption: 5W max.
• Environment
Temperature: 0°–50°C(32°–122°F)
Humidity:
up to 90%,non condensing

ORDERING
FCD-E1LC/&/*/%
E1 or Fractional E1 Access Unit
FCD-T1LC/&/*/%
T1 or Fractional T1 Access Unit
& Specify data port interface:
530 for RS-530
V35 for V.35
X21 for X.21
V36 for V.36/RS-449* Specify S1 for optional
drop-and-insert E1/T1 sublink% Specify optional second data portinterface:
530 for RS-530 interface
V35 for V.35 interface
X21 for X.21 interface
V36 for V.36/RS-449
ETQN for 10/100BaseT Ethernet
bridge with VLAN support
SUPPLIED ACCESSORIESPower cord and AC/DC adapter plug
CBL-RJ45/2BNC/E1/X
Interface adapter cable, single
RJ-45 to two BNC connectors,
15 cm (6 in) (supplied when
unbalanced E1 interface is ordered) 1991–2005 RAD Data Communications Ltd.
All other trademarks are the property of their respective holders.

CBL-RJ45/2BNC/E1Interface adapter cable, single
RJ-45 to two BNC connectors,
15 cm (6 in) (supplied when
unbalanced sublink interface isordered)
The following cables are supplied foreach data port interface specified when
operating in DCE clock mode:
CBL-HS2/V/1 for 34-pin V.35
CBL-HS2/R/1 for 37-pinV.36/RS-449
CBL-HS2/X/1 for 15-pin X.21
OPTIONAL ACCESSORIES
RM-33-2
Hardware for mounting one or twounits in a 19-inch rack
CBL-DB9F-DB9M-STR
Control port cable
The following cables convert
25-pin data port connectors into therespective interface. Cable length is 2m(6 ft).
CBL-HS2/*/#
Adaptor cables for DB-25 channel
connectors*Specify interface, clock mode:
V/2 for 34-pin V.35, DTE1
V/3 for 34-pin V.35, DTE2
R/2 for 37-pin V.36/RS-449, DTE1
R/3 for 37-pin V.36/RS-449, DTE2

# Specify cable connector type:
F for female
M for malewww.rad.com
International Headquarters
24 Raoul Wallenberg Street
Tel Aviv 69719, Israel
Tel: (972) 3-6458181
Fax: (972) 3-6498250, 6474436
Email: market@rad.com
North America Headquarters
900 Corporate Drive
Mahwah, NJ 07430
Tel: (201) 529-1100
Toll free: 1-800-444-7234
Fax: (201) 529-5777
Email: market@radusa.com

389-100-11/05

Specifications are subject to change without prior notice.