Comtech EF Data CDM-760 - Page 19

Table of Contents Revision 4
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760/CD-CDM760
xiv
J.4.5 Carrier-in-Carrier Link Design ..................................................................................................... J–8
J.4.6 Symmetric Data Rate Link .......................................................................................................... J–9
J.4.6.1 Asymmetric Data Rate Link .............................................................................................. J–11
J.4.6.2 Power Limited Links ......................................................................................................... J–12
J.4.7 Commissioning and Deploying Carrier-in-Carrier .................................................................... J–14
J.5 Operational References ...................................................................................................... J–15
J.5.1 Calculating a Carrier-in-Carrier Link Budget ............................................................................ J–15
J.5.2 Estimating / Calculating CnC Ratio ........................................................................................... J–16
J.5.2.1 Estimating CnC Ratio from LST / EIRP .............................................................................. J–16
J.5.2.2 Calculating CnC Ratio from Carrier to Noise Ratio (C/N) on a Spectrum Analyzer .......... J–17
J.5.3 Calculating CnC Ratio and PSD Ratio from Satmaster ............................................................. J–18
J.6 DoubleTalk Carrier-in-Carrier Specifications ........................................................................ J–18
J.7 Carrier-in-Carrier Summary ................................................................................................ J–18
J.8 Glossary............................................................................................................................. J–19
APPENDIX K. QUALITY OF SERVICE (QOS) .................................................................................. K–1
K.1 Overview ............................................................................................................................ K–1
K.2 QoS Characteristics ............................................................................................................. K–1
K.2.1 Traffic Filtering .......................................................................................................................... K–1
K.2.2 Traffic Shaping .......................................................................................................................... K–1
K.3 Traffic Shaping Functionality (QoS) ...................................................................................... K–2
K.3.1 Classification ............................................................................................................................. K–2
K.3.2 Prioritization.............................................................................................................................. K–3
K.3.3 Drain .......................................................................................................................................... K–3
K.3.3.1 Max/Priority Mode............................................................................................................ K–3
K.3.3.2 Min/Max Mode ................................................................................................................. K–4
K.3.3.3 DiffServ Mode ................................................................................................................... K–5
K.4 Weighting ........................................................................................................................... K–5
K.4.1 O
verview ................................................................................................................................... K–5
K.4.2 Weights ..................................................................................................................................... K–5
K.4.2.1 Order of Scheduling .......................................................................................................... K–5
K.4.2.2 Weighted Scheduling ........................................................................................................ K–6
K.4.2.3 Operational Examples ....................................................................................................... K–7
K.4.2.3.1 Example 1 ..................................................................................................................... K–7
K.4.2.3.2 Example 2 ..................................................................................................................... K–8
K.4.2.3.3 Example 3 ................................................................................................................... K–10
K.4.2.3.4 Example 4 ................................................................................................................... K–11