Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño

OL-4556-01

 

97

 

 
You can ensure a smooth upgrade path from a single channel to the maximum number of 
channels with a minimum disruption of service if the per-channel power of the single channel is 
properly set from the start.  Set the per-channel power so that at full channel loading the total 
input power is less than -6 dBm (0.25 mW). 
 
For example, if the maximum number of channels at full loading is 18, then you can calculate the 
power per channel by dividing .25 mW by 18, which equals .0138 mW.  This number (.0138 mW) 
in logarithmic scale is -18.6 dBm. 
 
Use Table 4-2 to calculate per-channel power as a function of the maximum total number of 
channels at full loading. 
 

 

1 0.2500 

-6.0 

2 0.1250 

-9.0 

3 0.0833 

-10.8 

4 0.0625 

-12.0 

5 0.0500 

-13.0 

6 0.0416 

-13.8 

7 0.0357 

-14.5 

8 0.0312 

-15.1 

9 0.0277 

-15.6 

10 0.0250 

-16.0 

11 0.0227 

-16.4 

12 0.0208 

-16.8 

13 0.0192 

-17.2 

14 0.0178 

-17.5 

15 0.0166 

-17.8 

16 0.0156 

-18.1 

17 0.0147 

-18.3 

18 0.0138 

-18.6 

19 0.0131 

-18.8 

20 0.0125 

-19.0 

21 0.0119 

-19.3 

22 0.0113 

-19.5 

23 0.0108 

-19.7 

24 0.0104 

-19.8 

25 0.0100 

-20.0 

26 0.0096 

-20.2 

27 0.0092 

-20.4 

28 0.0089 

-20.5 

29 0.0086 

-20.7 

30 0.0083 

-20.8 

31 0.0080 

-21.0 

32 0.0078 

-21.1 

33 0.0075 

-21.2