ATM OC-12c/STM-4c Intermediate Reach Card
2-4
SmartEdge 1200 Router Hardware Guide
Table 2-2 lists the specifications for the Enhanced ATM OC-12c/STM-4c IR card.
Table 2-2
ATM OC-12c/STM-4c 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.
1
Speed
622.08 Mbps
Protection (facility)
1+1 APS: Bidirectional or unidrectional;
revertive or nonrevertive switching
Interface
Telcordia IR-1, SDH/STM-4 S-4.1
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)
Extinction ratio
8.2 dB (minimum)
Center wavelength range
1,274 to 1,356 nm
Spectral width (RMS)
2.5 nm (maximum)
Receiver
Wavelength range
1,274 to 1,356 nm
Minimum sensitivity
–28 dBm
Overload level
–8.0 dBm (minimum)
