Avaya 8800 Planning And Engineering, Network Design page 53
Ethernet routing switch
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- Troubleshooting manual (484 pages) ,
- Planning and engineering (306 pages) ,
- Configuration manual (226 pages)
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Transmission distance
Passthrough nodes = number of OADMs between first OADM and OMUX Passive loss = OADM
add + OMUX-8 demux+ (passthrough nodes*OADM passthrough loss) Implied fiber loss = loss
budget - passive loss - system margin Maximum transmission distance = implied fiber loss/
attenuation
In this case:
Passthrough nodes = 7 nodes Passive loss = 1.9 + 4.5 + (67*2.0)= 20.4 dB Implied fiber loss = 30 –
20.4 – 3 = 6.6 dB Maximum reach = (6.6 dB) / (0.25 dB/km) = 26.4 km
June 2016
Planning and Engineering — Network Design
53
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