Hi Ted
This is from Cisco site regarding a 15454 and an OC-3 card
OC3 IR 4/STM1 SH 1310 Card Specifications
Line
Bit Rate: 155.52 MBits/s (Mbps)
Code: Scrambled NRZ
Fiber: 1310 nm single-mode
Loopback Modes: Terminal and Facility
Connector: SC
Compliance: ITU-T G.707, ITU-T G.957
Transmitter
Max. Transmitter Output Power: -8 dBm
Min. Transmitter Output Power: -15 dBm
Center Wavelength: 1293 nm - 1334 nm
Nominal Wavelength: 1310 nm
Transmitter: Fabry Perot laser
Receiver
Max. Receiver Level: -8 dBm at BER 1 * 10-10
Min. Receiver Level: -28 dBm at BER 1 * 10-10
Receiver: InGaAs/InP photo detector
Link Loss Budget: 13 dB
http://www.cisco.com/univercd/cc/td/doc/product/ong/15400/454sdhsp/stm1sh.htm
As yoy can se the maximum transmitter power is -8dBm,
the Max. Receiver Level: -8 dBm
so there should be no problem.
The power budget ca be easily calculatet
Min. Transmitter Output Power: -15 dBm
minus
Min. Receiver Level: -28 dBm
= 13dB ( as stated)
Ian Fudge