Specifications

T D M N T U S
3
107
RAD Data Communications 2009 Catalog
• One or two data ports
• Selectable sync data rates: n x 56 kbps,
n x 64 kbps
• Data interfaces: V.35, RS-530,
V.36/RS-449, X.21 or four S0
(FCD-E1A only)
• Integrated Ethernet bridge/router
option
• Optional sub-E1/T1 drop-and-insert port
for PBX connectivity
• Fail-safe sub-E1/T1 ensuring
uninterrupted service
• Operates with RAD’s DXC multiservice
access node for multilink star
configuration
• Main link available with optional
integral LTU/CSU or with fiber optic
modem
• Optional ISDN backup for data
(FCD-E1A only)
• 24-hour performance monitoring
storage
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FCD-E1, FCD-T1, FCD-E1A
E1/T1 or Fractional E1/T1 Access Units
The FCD-E1 and FCD-T1 are access units for full
or fractional E1/T1 services. Available with either
one or two data ports and an optional
sub-E1/T1 drop-and-insert port, data port rates
are selectable for any multiple of 56 kbps or
64 kbps, up to 1,984 kbps. Alternatively, one of
the data ports can be replaced by an Ethernet
bridge, providing direct connection to the LAN.
In the FCD-E1A, one of the data ports can also
be replaced by four S0 interfaces for ISDN BRI
extension, or by an ISDN backup interface.
Internal or external line termination unit
The FCD-E1 is available with or without an
internal LTU (line termination unit), allowing
direct connection to the E1 network or
connection via an external LTU. In the FCD-E1A
this capability is built-in and can be configured
with or without LTU by the customer. The
FCD-T1 has a built-in CSU, allowing direct
connection to the T1 network.
Interoperability with the DXC multiservice
access node
The FCD-E1, FCD-T1 and FCD-E1A can operate
with RAD’s modular DXC multiservice access
node products for multilink star applications,
including access to SDH/SONET networks.
Programmable timeslot allocation
Timeslot assignment is programmable, allowing
data from each data port and from the sub-E1/
T1 port to be placed into timeslots on the main
link, either consecutively or alternately.
Multiple clock source selection ensures
maximum flexibility, enabling the support of
different applications.
Immunity to hardware and power failures is
provided by bypassing the sub-E1/T1 port to the
main E1/T1 link, ensuring uninterrupted service
to the sub-E1/T1 port.
Standards compliant
The FCD-E1 and FCD-E1A comply with ITU
recommendations G.703, G.704, G.706, and
G.732. It supports both two and 16 frames per
multiframe, with or without CRC-4. Zero
suppression over the line is HDB3. The integral
LTU ensures a range of up to 2 km (1.2 miles).
The FCD-T1 meets all TR-62411 and TR-62421
requirements. It supports both D4 and ESF
frame formats. Zero suppression over the line is
selectable for either transparent, B7ZS or B8ZS.
The integral CSU ensures a range of up to
1.6 km (1 mile).
Setup, control and monitoring
Setup, control and monitoring of status and
diagnostic information can be activated via:
• Front panel LCD with pushbuttons (menu-
driven management)
• ASCII terminal connected to the async
control port (command line interpreter)
• SNMP management connected to the async
control port
• Inband management through a datalink bit
(T1), a dedicated timeslot or TS0 (E1),
supporting proprietary protocol and Frame
Relay RFC 1490
Network management
The products support an internal SNMP agent
and can be controlled by any generic SNMP
station or by the RADview-HPOV or RADview-PC
(FCD-E1A only) SNMP network management
application.
The units support dial-in/dial-out, which can be
used for remote out-of-band configuration and
monitoring (dial-in) and for alarms (dial-out).
Maintenance capabilities include user-activated
local and remote loopbacks and internal BERTs
on the main E1/T1 link, sub-E1/T1 link and data
ports. The FCD-T1 also responds to network-
activated loops (RLB, LLB) when CSU-configured.
The products are standalone units for the
desktop or a 19-inch rack shelf.
PBX
Router
PBX
Router
E1/T1
Copper
E1/T1
E1/T1
FCD-E1
FCD-T1
Supports up to
120 E1/T1 links
DXC-30
(DACS)
FCD-E1
FCD-T1
V.35
X.21
SDH/SONET
Ring
ADM
SNMP
management station
E1 or
fractional E1
FCD-E1A
Backup
Fractional E1
PBX
Copper
ISDN switch
4 x S0
E1
Network
ISDN
SDH/SONET access solution for multiple sites