T3 DS3 E3 Fiber
Optic Modem for T3 Extensions
for 10/100BaseT
When you need
to tie building communications together at the T3 - DS3 level
the T3 DS3 Fiber Optic modems will let you extend out to 100KM.
T3
Fiber Optic Modem - FOM-T3
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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
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T3 Fiber Optic Modem T3
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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
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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 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" rack using special hardware or two units can be mounted
side-by-side.
Specifications
The FOM-T3 is a T3 fiber optic modem that can extend a T3 circuit over fiber
for extended distances.
Using 1550nm single mode the FOM-T3 has a maximum
range of 68 miles
The FOM-T3 is transparent to T3 framing
It can operate over single mode or multimode
fiber using 850nm LEDs, 1300 nm laser diode or 1550 nm laser diode
WDM option allows you to transmit and receive
on a single strand of fiber for further fiber conservation
ITU standard compliant with G.703, G.921 and
G.956
V.54 diagnostics for local and remote digital loopbacks
Relays major and minor alarms
Front panel LED indicators
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