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OC3 and STM-1 Line Characteristics
Table 44. OC3 and STM-1 Line Attachments
Characteristic
Distance Range
Line Speed
Payload
Clock Extraction
Connector Type
Number of Line
Attachments
Physical Interfaces
Laser
Minimum Transmitted
Power
Minimum Receiver
Sensitivity
Optical Power Budget
Frame Format
Cell Delineation
Rate Decoupling
Idle Cell Character
Cell Discard Policy
Table 44 summarizes the characteristics according to the type of line.
Singlemode Fiber
m
Up to 10 or 20 km (8
fiber)
1 line attachment per I/O card
1310 nm, class 1 (ITU G.597)(
-15 dB
-29 dB
14 dB
SONET STS-3c (T1-105)
SDH STM-1 (ITU-T G.708/G.709)
ATM cells in VC-4
I.432, I.361, and ATM Forum 3.0/3.1
ANSI, ANSI unassigned
ATM Forum, ATM Forum unassigned
CCITT, CCITT unassigned
Multimode Fiber
m
Up to 2 km (8
155.520Mbps
149.760Mbps
Yes
SC
OC3/STM-1
1310 nm, LED
-19 dB
-30 dB
11 dB
I.432
Not supported
Chapter 7. Planning for Media Modules
fiber)
67
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