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Chapter 1 Introduction RIC-155 Installation and Operation Manual
1-2 Overview
Features
10/100BaseT Interface
RIC-155 Fast Ethernet interface operation conforms to the IEEE 802.3u, 802.3x
and 802.1p standards, including VLAN applications. The Fast Ethernet interface
supports the following functions:
• Four levels of QoS, according to ToS or 802.3p
• High performance lookup engine with support for up to 1024 MAC address
entries with automatic learning and aging
• Autonegotiation
• Backpressure
• Half duplex and full duplex operation
• FDX flow control
• Automatic MDI/MDIX crossover.
STM-1/OC-3c Interface
RIC-155 converts Ethernet/Fast Ethernet signals into POS and vice. The
STM-1/OC-3c interface terminates into fiber optic or 75Ω BNC coaxial
connectors. Single mode fiber optic interface of the unit uses a 1310 nm LED or
1310/1550 laser diode transmitters (see Table 1-1).
The STM-1/OC-3c interface of RIC-155 operates with internal or receive clock.
Table 1-1. Fiber Optic Interface Options
Wavelength
[nm]
Fiber Type
[µm]
Transmitter
Type
Power
[dBm]
Receiver
Sensitivity
[dBm]
Typical Max.
Range
[km/miles]
Connector
1310
62.5/125,
multimode
LED
-18 -31
2/1.2
SC
1310 9/125 single mode Laser -12 -31 20/12.4
ST, SC, FC
1310 9/125 single mode Laser, long haul -2 -34 40/25
ST, SC, FC
1550 9/125 single mode Laser, long haul -2 -34 80/49.7
SC
SF1 (WDM)
9/125 single mode
Laser
Tx – 1310
Rx – 1550
-12 -29
20/12.4
SC
SF2 (WDM)
9/125 single mode
Laser
Tx – 1550
Rx – 1310
-12 -29
20/12.4
SC
SF3
(single fiber)
9/125 single mode Laser, 1310
Tx and Rx
-12 -27
20/12.4
SC/APC