User's Manual

Table Of Contents
16 Data Rate Calculations
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16 Data Rate Calculations
The data rate capacity of a PTP link is defined as the maximum end-to-end Ethernet
throughput (including Ethernet headers) that it can support. Use the tables and graph in this
section to calculate the data rate capacity that can be provided by alternative PTP 600
configurations. It is assumed that Ethernet frames are 1500 octet.
Data rate capacity is determined by the following factors:
Product variant (PTP 600 Full or Lite)
Link Symmetry
Link Mode Optimization (IP or TDM)
Modulation Mode
Channel Bandwidth
Link Range
16.1 Calculation Procedure and Example
16.1.1 Procedure
To calculate the data rate capacity of a PTP 600 link, follow this procedure:
1. Use the tables in Section 16.2 to look up the data throughput capacity rates (Tx, Rx and
Both) for the requi
red combination of:
o Link Symmetry
o Link Mode Optimization
o Modulation Mode
o Channel Bandwidth
2. The tables in Section 16.2 contain data rates for PTP 600 Full only. If the ODUs are PTP
600 Lite, divide the data rates in Se
ction 16.2 by 2.
3.
The tables in Section 16.2 contain data rates for links of ze
ro range. Use the curves in
Section 16.3 to look up the Throughput Factor that must be
applied to adjust the data
rates for the actual range of the link.
4. Multiply the data rates by the Throughput Factor to give the throughput capacity of the
link.