RAD Data comm 4-Wire Symmetrical VDSL Modem ASM-60 Instrukcja Użytkownika Pobierz pdf (Strona 7)

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RAD Data Communications 2009 Catalog

FOMi-40

High Speed Fiber Optic Modem with Remote Control

F I B E R M O D E M S

•

User-selectable data rates from 56 kbps

to 2.048 Mbps

•

Extended transmission range up to

100 km (62 miles)

•

Inband management of local and remote

units

•

Automatic rate detection in tail-end

applications

•

Digital interfaces supported: V.24

(64 kbps only), V.35, X.21, RS-530,

V.36/RS-449, Ethernet bridge, Fast

Ethernet bridge, G.703 E1, G.703 T1,

and G.703 codirectional (64 kbps)

•

Extends the range of 10/100BaseT

signals over E3/T3 services via fiber

optic cable up to 110 km (68 miles)

•

Built-in bridge and VLAN support

•

Wave Division Multiplexing (WDM) for

transmission over single fiber link

•

User-selectable IP multicast and

broadcast prevention towards the WAN

•

Multimode or single mode fiber

FOM-E3/ETH, FOM-T3/ETH

10/100BaseT over E3/T3 Fiber Optic Modems

The FOMi-40 is a high speed sync fiber optic

modem with remote configuration and

monitoring. It supports user-selectable data

rates from 56 kbps to 2.048 Mbps.

The FOMi-40 supports the common fiber optic

wavelengths and connector types, operating

over different types of fiber optic links.

An inband management channel allows the user

to monitor, control and configure the remote

unit using the same fiber links as for data

transmission, with no interference between them.

In tail-end applications, the local FOMi-40

automatically detects the external clock rate and

is locked accordingly. It also updates the remote

unit’s clock rate via the management channel.

This enables synchronization of local and

remote units to the network clock.

The FOMi-40 is available as a standalone unit or

as a card version for the LRS-24 19-inch rack

with central SNMP management. A double

modem card is available for the LRS-24, which

supports up to 24 modems in a 4U/6U-high

chassis.

technologies. They provide built-in bridging and

VLAN support at Ethernet/Fast Ethernet rates,

enabling virtual connection of remote LANs

(e.g., campus applications).

The Ethernet interface module performs frame

filtering and forwarding at the Fast Ethernet

maximum theoretical rate of 150,000 frames

per second. The bridge causes no LAN delays.

Different optical interfaces are available:

•

850 nm for multimode fiber

•

1310 nm for single or multimode fiber

•

1310 nm and 1550 nm laser diode, long haul

laser for extended range over single mode fiber

•

WDM laser for transmission over a single fiber

The modems can be configured by the user to

enable or prevent broadcast and IP multicasting

to the WAN as required. The FOM-E3/ETH and

FOM-T3/ETH can be used to connect LANs and

high speed routers over E3/T3 links to the

network.

The products are available as standalone units.

They can be mounted in a standard 19-inch rack

using special hardware, or two units can be

mounted side-by-side.

Fiber optic

FOMi-40CD card

LRS-24

SNMP

management station

100 km (62 miles)

Router

FOMi-40

V.35

Central Office/POP

RICi-E3/

RICi-T3

10/100BaseT

FOM-E3/ETH

FOM-T3/ETH

E3/T3

Router

LAN

FOM-E3 or

FOM-T3

Fiber optic link

Up to 110 km

(68 miles)

SDH/

SONET

E3/T3

The FOM-E3/ETH and FOM-T3/ETH fiber optic

modems convert a 10/100BaseT electrical signal

into an optical signal with a range of up to

110 km (68 miles).

These modems transparently connect between

LANs, achieving maximum bandwidth utilization of

the E3/T3 link, without the heavy overhead

associated with packet- or cell-based

User-selectable data rates from 56 kbps

For latest updates visit www.rad.com

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