Specifications

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T D M N T U S

105

RAD Data Communications 2009 Catalog

• One data port with selectable sync data

rates: n x 56 kbps, n x 64 kbps

• Single slot supports the following

Megaplex modules: HS-Q/N, HS-S

or HS-U

• Optional sub-E1/T1 drop-and-insert port

for PBX connectivity

• Fail-safe sub-E1/T1 ensures

uninterrupted service

• Operates with RAD’s DXC multiservice

access node for multilink star

configuration

• Main link available with optional

integral LTU/CSU or optional fiber optic

modem

• Data interfaces: V.35, RS-530,

V.36/RS-449 or X.21

• Integrated Ethernet bridge/router

option

• 24-hour performance monitoring

storage

For latest updates visit www.rad.com

FCD-E1M, FCD-T1M

Modular E1/T1 or Fractional E1/T1 Access Units

Supporting Megaplex-2100 Modules

The FCD-E1M and FCD-T1M are dedicated access

multiplexers for business customers, providing

integration of voice and data traffic over full

E1/T1 or fractional E1/T1 links. They can also be

used as integrating multiplexers.

The devices have a single n x 56/64 kbps data

port and an I/O module slot supporting one

Megaplex I/O module (HS-Q/N, HS-S, or HS-U)

to provide four high or low speed data

channels, and four ISDN S or U interfaces.

Alternatively, the built-in data port can be

replaced by an Ethernet bridge/router port. The

FCD-E1M and FCD-T1M also offer an optional

sub-E1/T1 drop-and-insert port for PBX

connectivity.

The FCD-E1M can be ordered with an internal

LTU (line termination unit), allowing direct

connection to the E1 network, or can connect

via an external LTU. The FCD-T1M has an integral

CSU, for direct connection to the T1 network.

Optionally, either unit can support a fiber optic

main link interface for multimode or single

mode fiber, eliminating the need for an external

fiber optic modem.

Operates with DXC access node

The FCD-E1M and FCD-T1M can operate with

RAD’s modular DXC multiservice access node

products in multilink star applications for access

to SDH/SONET networks. The DXC and FCD units

operate under a centralized SNMP network

management.

Flexible timeslot assignment

Timeslot assignment is programmable, allowing

data from the data port and from the sub-E1/T1

link to be placed into timeslots consecutively.

FCD-E1M and FCD-T1M also provide additional

flexibility by giving full user control over the

data port timeslot allocation.

Multiple clock source selection ensures

maximum flexibility for supporting different

applications. The main E1/T1 link may be

clocked from the recovered receive clock, an

internal oscillator, one of the data ports, or the

sub-E1/T1 link.

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.

The E1 interface meets all requirements of 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 T1 interface meets all requirements of

TR-62411 and TR-62421. 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).

Management options

Setup, control and monitoring of status and

diagnostics can be performed via an ASCII

terminal. The FCD-E1M and FCD-T1M can also

be managed via any standard SNMP application

or the RADview SNMP network management

application. Inband management is available via

TS0 (E1) or datalink bit (T1), or a dedicated

timeslot using standard Frame Relay (RFC 1490),

PPP and RIP-2 routing protocols.

The units support dial-in/dial-out, which can

also be used for remote out-of-band

configuration and monitoring, via serial V.24,

SLIP, PPP, or Ethernet ports.

Enhanced diagnostics include user-activated

local and remote loopbacks, an integrated BER

tester and fractional E1/T1 inband loops.

The FCD-E1M and FCD-T1M are 19-inch,

1U-high, standalone units for desktop use. A

rack-mount adapter kit enables installation in a

19-inch rack.

FCD-E1M

FCD-T1M

ASM-31

ASMi-31

64 kbps

X.21

V.35

Bridge/router

Center

Bridge/router

Megaplex-2100

Fiber

E1/T1

Fiber

Copper

PBX

ISDN

switch

4 "S"

(TE)

4 "S"

5.5 km

2-wire

n x 64 kbps

Fractional

E1/T1

PBX

HS-S

HS-U

E1/T1

FCD-E1M

FCD-T1M

FCD-E1M

FCD-T1M

DXC-30

(DACS)

n x 64 kbps