RAD Data comm 4-Wire Symmetrical VDSL Modem ASM-60 Instrukcja Użytkownika Pobierz pdf (Strona 8)

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RAD Data Communications 2009 Catalog

F I B E R M O D E M S

•

Extends the range of E3 or T3 signals

over fiber optic cable up to 110 km

(68 miles)

•

Wave Division Multiplexing (WDM)

module for operation over a single fiber

strand

•

Wide range of optical modules including

long haul lasers for extended range

•

Operates opposite Optimux, ACE and

DXC

•

Built-in diagnostics comply with V.54

standard

•

Dry contact alarm port for external

alert devices

The high speed FOM-E3 and FOM-T3 fiber optic

modems extend transmission range of electrical

E3 or T3 signals over fiber optic cables up to

110 km (68 miles).

Two models are available:

•

FOM-E3 for E3 rates (34.368 Mbps)

•

FOM-T3 for T3 rates (44.736 Mbps)

The FOM-E3 and FOM-T3 support a wide range

of fiber optic interfaces, including long haul

laser for extended ranges and WDM laser for

transmission over a single fiber.

Transparent to E3/T3 framing, the FOM-E3 and

FOM-T3 modems operate opposite RAD’s DXC

cross connect, Optimux-34 multiplexer (FOM-E3)

and Optimux-45 multiplexer (FOM-T3). Similarly,

they can operate opposite an ACE ATM access

device, enabling E3/T3 ATM traffic to be

transported over long distances on fiber and

connect to an ATM or SDH network device with

an electrical E3/T3 port.

FOM-E3 and FOM-T3 operation complies with

ITU G.703, G.921 and G.956 standards. In

addition, the modems support activation of

local and remote loopbacks in compliance with

the ITU V.54 standard.

The FOM-E3 and FOM-T3 modems include a dry

contact alarm port for relay of alarm conditions

to external alert equipment.

FOM-E3, FOM-T3

E3, T3 Fiber Optic Modems

•

Extends the range of E1/T1 services

over fiber optic cables up to 144 km

(89.4 miles)

•

Transparent to E1/T1 framing

•

Operates opposite RAD’s DXC cross

connect system, Megaplex access

multiplexers and FCD access units

•

Conforms to all relevant ITU series

standards, including V.54 diagnostics

support

The FOM-E1/T1 fiber optic modem converts an

E1/T1 electrical signal into an optical signal.

After the conversion, the signal is transmitted

over fiber optic cable, extending the E1/T1

service range up to 144 km (89.4 miles).

The FOM-E1/T1 is transparent to E1/T1 framing

(G.704), which enables it to transmit both

framed or unframed E1/T1 signals.

Using the FOM-E1/T1 opposite the DXC cross

connect system, Megaplex access multiplexer or

FCD access unit reduces the cost of the fiber

optic link when accessing the SDH/SONET

network.

The FOM-E1/T1 supports various optical

interfaces:

•

850 nm for multimode fiber

•

1310 nm for single mode or multimode fiber

•

1550 nm laser diode for extended range over

single mode fiber

•

WDM for single fiber extension

FOM-E1/T1 operation complies with ITU G.703,

G.921 and G.956 standards. The modem

supports activation of local and remote

loopbacks in compliance with the ITU V.54

standard.

Front panel LEDs indicate system faults in the

electrical and fiber optic circuits.

FOM-E1/T1

E1/T1 Fiber Optic Modem

Fiber optic

110 km

(68 miles)

E3/T3 E3/T3

G.703G.703

Voice/data

mux

Voice/data

mux

FOM-E3/

FOM-T3

FOM-E3/

FOM-T3

Fiber optic

144 km

(89.4 miles)

E1/T1 E1/T1

G.703G.703

Voice/data

mux

Voice/data

mux

FOM-E1/T1 FOM-E1/T1

Extends the range of E3 or T3 signals

For latest updates visit www.rad.com

For latest updates visit www.rad.com

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