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FCD-E1A
E1 or Fractional E1 Access UnitManaged access for• One or two data ports with selectable sync data rates: n × 56, n × 64 kbps

E1 and fractional E1• Failure-immune sub-E1 port ensuring uninterrupted service (G.703 only)

services• Optional sub-E1 drop-and-insert user port for PBX connectivity• Optional Fast Ethernet bridge, with VLAN support• Dial-in option for remote out-of-band management

FCD-E1A is an access unit for E1 orfractional E1 services. It can be used as arate and interface converter, or as anintegrating multiplexer for E1 andfractional E1 services (see Figure 1 andFigure 2).
FCD-E1A operates opposite RAD's modular
DXC or Megaplex multiservice accessnodes or other vendors’ E1 equipment, formultilink star applications such as SDH
network access. DXC/Megaplex and
FCD-E1A units operate together undercentralized SNMP network management(see Figure 3).

FCD-E1A is supplied with a standard
electric (G.703) E1 main link. An optional
sub-E1 drop-and-insert port is alsoavailable. The unit can be ordered witheither one or two data ports.
Alternatively, an Ethernet bridge port isavailable instead of a second data port.

The Access Company

FCD-E1A
E1 or Fractional E1 Access Unit

The basic unit includes a wide range
power supply, one E1 main link, and one
data port.
The electrical E1 interface is compatible
with virtually all carrier-provided E1
services and meets ITU recommendations
G.703, G.704, G.706, and G.732. It
supports both 2 and 16 frames per
multiframe, with or without CRC-4. Linecoding is HDB3. The integral LTU (softconfigurable) ensures a range of up to2 km (1.2 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 allows non-CRC-4 E1 equipment to beconnected over an E1 network that isusing CRC-4.

Timeslot assignment is programmable,
allowing data from each data or sub-E1
port to be placed automatically into
consecutive timeslots. Alternatively, theuser can assign timeslots manually.
Multiple clock source selection ensuresmaximum flexibility for supporting
different applications. The E1 main link
may derive its timing from the recovered
receive clock, from an internal oscillator,
from one of the data ports, or from thesub-E1 port.
ISDN dial backup ensures the continuity ofdata services.
FCD-E1A is a standalone unit. An optionalrack mount adapter kit enables installationof one or two side-by-side units in a
19-inch rack (see Ordering).

Bypassing the sub-E1 port to the G.703
main link (electric only) ensuresuninterrupted service to the sub-E1 port
and provides immunity from hardware orpower failures.

Figure 1. Extended Ethernet Management over E1 Network

Data Sheet

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USER INTERFACES
The following interfaces can be ordered
for the data port: V.35, RS-530,V.36/RS-449, or X.21.
An optional second data port can beordered with V.35, RS-530, V.24,
V.36/RS-449, or X.21 and IR-ETH/QNinterfaces.
The synchronous data ports can operate
in the following clock modes:•DCE: FCD-E1A provides both transmit
and receive clocks to the user
equipment, with optional sampling of
the incoming data with an invertedclock.

•DTE1: FCD-E1A provides the transmit
clock. The connected user equipment
provides receive clock (not for X.21).

•DTE2: The connected user equipment
provides both transmit and receiveclocks (not for X.21).

When equipped with an IR-ETH/QN
interface module, FCD-E1A transparently
connects remote LANs, as well as VLANs,
over the E1 links. It filters Ethernet
packets, forwarding only packets destinedto the WAN.

The optional four ISDN "S" interfaces can
extend ISDN services to locations that do
not support ISDN. Each "S" interface port
operates in full-duplex mode over a 4-wire
twisted-pair at a range of up to 1000m(3300 ft).

The IR-ETH/QN port has a 10/100BaseTinterface that supports autonegotiation
and VLAN frames.

Figure 2. Co-connection of LAN and PBX Traffic to E1 Network

FCD-E1A
E1 or Fractional E1 Access Unit

MANAGEMENT & MAINTENANCE
Status and diagnostic information isdefined, configured, and monitored using
one of the following methods:•Menu-driven management using thefront panel LCD with threepushbuttons.

•ASCII terminal connected to the SLIPcontrol port

•SNMP or Telnet management througheither the SLIP control port or inbandThe internal SNMP agent can be controlled
by the RADview SNMP network
management application or any generic
SNMP station.
FCD-E1A supports both dial-in and dial-out
modem connections. These connections
allow remote out-of-band configurationand monitoring, as well as sending callout
alarm messages. Modems can beconnected using the serial V.24 SLIP, PPP,or Ethernet ports.

Inband management uses the spare bits
(Sa bits) on timeslot 0 (TS0) or a dedicatedtimeslot with standard protocols: Frame
Relay (RFC 1490), PPP, and standard
RIP2 routing. If spare bits on TS0 are used
for management access, they must be
passed transparently end-to-end.
Maintenance capabilities includeuser-activated local and remote loopbacks
on the E1 main link, sub-E1, and dataports. The user can activate a BER test forthe sub-E1 port and each data port
individually.
Each data port responds to an ANSI FT1
inband loop code (RDL) generated by aremote FCD-E1A or DXC in a specific bundleof timeslots allocated only to that port.
E1 network statistics are stored in memory
according to RFC-1406 and can be
retrieved locally through the control port.

Figure 3. SDH Access Solution for Multiple Remote Sites

Data Sheet

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Specifications
ELECTRIC E1 MAIN LINK (NETWORK)AND SUB-E1 PORTS
Framing
256N (no MF, CCS)
256N with CRC-4 (no MF, CCS)
256S (TS16 MF, CAS)
256S with CRC-4 (TS16 MF CAS)
Unframed
Bit Rate
2.048 Mbps
Line Code
HDB3
Impedance
120Ω, balanced75Ω, unbalanced
Signal Level
Receive:
0 to -36 dB with LTU
0 to -10 dB without LTU
Transmit:±3V (±10%), balanced±2.37V (±10%), unbalanced
Jitter Performance
As per ITU G.823,
ETSI TBR-12, TBR-13
Connectors
RJ-45, 8-pin, balanced
Two BNC coaxial, unbalanced
Transmit Timing
Locked to the system clock
Compliance
ITU G.703, G.704, G.706, G.732
Performance Monitoring (Main Linkonly)
Local support of CRC-4
Statistics according to RFC-1406

DATA PORTSETHERNET BRIDGE PORT

Number of Data Ports
One or two (see Ordering)Interface Module
IR-ETH/QN

Interfaces
V.35, RS-530, V.36, X.21
V.24 (data port 2 only)

LAN Table
1,000Connectors
D-type 25-pin RS-530, female
Data Raten × 56 or n × 64 kbps, (n=1 to 31)
Clock Modes
DCE: Rx and Tx clock to DTE
DTE1: Rx clock to user device,
Tx clock from user device
DTE2: Rx and Tx clock from DCE
Control Signals
CTS follows RTS or constantly ON,
soft-selectable
DSR constantly ON, unless in test mode
DCD constantly ON, unless in SYNC LOSS

Filtering and Forwarding
150,000 frame/second
Buffer85 framesLine Code10BaseT: Manchester
100BaseT: MLT3
WAN Protocol
HDLC
ComplianceIEEE 802.3/Ethernet V2, 802.1Q (relevantparts), 802.1p and 802.3x.
Connector
Shielded RJ-45

FCD-E1A
E1 or Fractional E1 Access Unit

"S" INTERFACE PORTS

MANAGEMENT PORTS

GENERAL

Number of PortsFour "S" 2B+D interface channels

CONTROL DCE PortInterface and connector: V.24/RS-232,
9-pin D-type, female
Format: Asynchronous
Baud rate: 1.2–19.2 kbps, autobaud
Character: 8 bit no parity, 7 bit odd, oreven parity

System Clock
Internal clock: ±30 ppm
Loopback timing (sub, main E1): ±130 ppm
External timing from data port: n × 56,n × 64 kbps ±130 ppm

Compliance
ETS 300012
Interface
4-wire, full-duplex

Line Termination100Ω ±5%

CONTROL Port (Serial)
Connector: V.24/RS-232, 9-pin D-type,femaleFormat: Asynchronous
Baud rate: 0.3–57.6 kbps, autobaud
Character: 8 bit no parity, 7 bit odd oreven parity

Range
1000m (3300 ft)

CONTROL Port (Ethernet)
Type: Ethernet 10BaseT

Signal Levels
Receive: +1.5 to -7.5 dB relative to thenominal amplitude
Transmit: ±750 mV

Connector
RJ-45

Bit Rate
192 kbps ±100 ppm
Line CodePseudoternary

Timing Modes
NT: Transmit timing is locked to systemtiming clock
TE: Looped back towards the "S" interface(timing is derived from Rx signal fromthe ISDN switch NT)
Connector
RJ-45 (8-pin) per channel
Power Feeding Voltage
38V (±4V), as per TR5805-3074, 1W perchannel

Diagnostics
Main E1 link:
Local and remote loopbacks
Inband code loopback
Sub-E1 port:
Local and remote loopbacks
BER test
Data port:
Local and remote loopbacks
BER test

Data Sheet

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Timeslot Allocation
Consecutive (bundled)
User-defined
Front Panel Control
LCD: 2 rows of 16 characters
Push buttons: Cursor, Scroll, EnterIndicators
General: TST, ALM
Main E1: LOC SYNC LOSS, REM SYNC LOSS
Sub-E1: LOC SYNC LOSS, REM SYNC LOSSAll indicators are red except TST (yellow).
AlarmsLast 100 alarms are stored and available
for retrieval. Each alarm is time-stamped.

PhysicalHeight: 4.3 cm (1.7 in) (1U)
Width: 21.5 cm (8.5 in)
Depth: 24.3 cm (9.5 in)
Weight: 1.3 kg (2.9 lb)
Power Supply
Wide range AC/DC: 100 to 240 VAC,
-48 to -60 VDC
Nominal power consumption: 5W max.
Environment
Temperature: 0°C to 50°C (32°F to 122°F)
Humidity: up to 90%, non-condensing

Alarm Relay
3 relay contacts on the alarm relay port
Activated by alarms in the user-defineddalarm buffer

Table 1. FCD Comparison TableFeatures

Total user ports
Interface types

E1/T1 line type

FCD-E1FCD-E1L

FCD-E1LC/T1LC

FCD-E1E

FCD-E1A

32

3

2

3

RS-530, V.35,
RS-530, V.35, V.36,
X.21, Ethernet
V.36, X.21, Sub-E1bridge(10/100BaseT withVLAN support)

RS-530, V.24, V.35,
RS-530, V.35,
RS-530, V.35,V.36, X.21, Ethernet
V.36/RS-449, X.21,V.36/RS-449, X.21,
Bridge (10/100BaseT
V.24/RS-232, Ethernet
Sub-E1with VLAN support), Bridge (10/100BaseT with
Sub-E1/T1
VLAN support), Sub-E1

CopperCopperCopperCopperCopper9––99

Auto-configuration

–9––

–

SNMP management

99999

Interoperability

Megaplex, DXC

Megaplex, DXC

Megaplex, DXC

Megaplex, DXC

Megaplex, DXC

ETH out-of-band
for management

99999

E1 bypass

9––

ETH performance–VLAN transparent

LCD panel

VLAN transparent

9VLAN priority tagging(802.1p/Q)

9VLAN transparent

Data Sheet
FCD-E1A
E1 or Fractional E1 Access Unit

SUPPLIED ACCESSORIESSTANDARD CONFIGURATIONSAC/DC adaptor plug

FCD-E1A/AC/UTP/X21/S0

The following cables (suitable for use in
DCE clock mode only) are supplied foreach data port interface specified. Cable
length is 2m (6 ft):

AC power cord

FCD-E1A/S1/AC/UTP/X21/X21
FCD-E1A/S1/AC/UTP/V35/S0
FCD-E1A/S1/AC/UTP/X21/S0
FCD-E1A/AC/UTP/V35/S0
SPECIAL CONFIGURATIONS

CBL-HS2/^
Adapter cables for DB-25 channel
connectors for use in DCE clock mode onlyFCD-E1A/*/~/$/&/%

Note: Cable length is 2m (6 ft).

LegendLegend*~Optional drop & insert sub-E1 port.
(Default= no sub-E1 port)
S1
Sub-E1 port
Power supply type:AC
110 VAC to 240 VAC
48-48 VDC$Management port interface:
V24 V.24/RS-232 (DB-9)
UTP Ethernet 10BaseT (UTP)&Data port interface:
530 RS-530
V35 V.35
X21 X.21
449 V.36/RS-449%

International Headquarters
24 Raoul Wallenberg Street
Tel Aviv 69719, Israel
Tel. 972-3-6458181
Fax 972-3-6498250, 6474436
E-mail market@rad.com^Data port interface:
V/1 34-pin V.35
R/1 37-pin V.36/RS-449
X/1 15-pin X.21

OPTIONAL ACCESSORIES
RM-17
Hardware kit for mounting one or twounits side-by-side in a 19-inch rack
CBL-HS2/*/#
Adapter cables for DB-25 channel
connectors for use in DTE clock mode only

LegendSecond data port interface(Default=single port):
530 RS-530
V24 V.24
V35 V.35
X21 X.21
449 V.36/RS-449
ETQN IR-ETH/QN UTP Ethernet bridge
VLAN (10/100BaseT)
S0
4×S0 ISDN

www.rad.com

201-100-06/11 (4.0) Specifications are subject to change without prior notice. © 1991–2011 RAD Data Communications Ltd. The RAD name, logo, logotype, and the terms EtherAccess, TDMoIP and TDMoIP Driven,and the product names Optimux and IPmux, are registered trademarks of RAD Data Communications Ltd. All other trademarks are the property of their respective holders.

Ordering*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

#Cable connector type:
FFemaleMMale

North America Headquarters
900 Corporate Drive
Mahwah, NJ 07430, USA
Tel. 201-5291100
Toll free 1-800-4447234
Fax 201-5295777
E-mail market@rad.com

Order this publication by Catalog No. 803182

The Access Company