ATM OC-3c/STM-1c Intermediate Reach Card
2-6 SmartEdge 1200 Router Hardware Guide
Table 2-3 lists the specifications for the 4-port ATM OC-3c/STM-1c IR card.
Table 2-3 ATM OC-3c/STM-1c IR Card Specifications
Specification Value
General
Number of ports
1
1. Each optical port has separate connectors for the transmit (Tx) and receive (Rx) circuits.
2 or 4
Speed 155.52 Mbps
Protection 1+1 APS: Bidirectional or unidrectional;
revertive or nonrevertive switching
Interface Telcordia IR-1, SDH/STM-1 S-1.1
Link power budget
2
2. The link power budget is calculated using (minimum output power) – (minimum sensitivity)
– (optical path power penalty); the power penalty is 1.
12 dB
Nominal wavelength 1,310 nm
Connector type LC
Cable type SMF
Compliance Telcordia GR-253, ANSI T1.102, ITU G.957
Transmitter
Optical output power –8.0 dBm (maximum)
–15.0 dBm (minimum)
Center wavelength range 1,261 to 1,360 nm
Extinction ratio 8.2 dB (minimum)
Spectral width (RMS) 7.7 nm (maximum)
Receiver
Wavelength range 1,260 to 1,360 nm
Minimum sensitivity –28 dBm
Overload level –8.0 dBm (minimum)
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