Comtech EF Data CDM-625A - Page 27

CDM-625A Advanced Satellite Modem MN-CDM625A / CD-MN-CDM625A
Table of Contents Revision 4
xxi
L.5 IP Packet Processor Field Upgrade Procedure ...................................................................... L–8
L.5.1 Overview .................................................................................................................................................... L–8
L.5.2 Requirements for Field Upgrade ............................................................................................................. L–8
L.5.3 Field Upgrade Procedure ......................................................................................................................... L–9
APPENDIX M. VERSAFEC / VERSAFEC-2 ACM (ADAPTIVE CODING AND MODULATION)
OPTION .................................................................................................................... M–1
M.1 Overview .......................................................................................................................... M–1
M.2 Background ...................................................................................................................... M–2
M.3 Requirements for ACM ...................................................................................................... M–3
M.4 An Existing Satellite ACM Scheme ...................................................................................... M–5
M.5 Disadvantages of DVB-S2 .................................................................................................. M–5
M.6 VersaFEC ACM .................................................................................................................. M–6
M.6.1 VersaFEC ACM Latency .......................................................................................................................... M–8
M.6.2 Configuring VersaFEC ACM in the CDM-625A ..................................................................................... M–9
M.7 VersaFEC-2 ACM .............................................................................................................. M–12
M.7.1 VersaFEC-2 ACM latency ...................................................................................................................... M–15
M.7.2 Configuring VersaFEC-2 ACM in the CDM-625A ............................................................................... M–16
M.8 Monitoring ACM Performance .......................................................................................... M–18
M.9 ACM Congestion Control .................................................................................................. M–18
M.10 Using ACM with AUPC .................................................................................................. M–19
M.11 Notes and Recommendations ....................................................................................... M–20
M.12 Summary of Specifications ............................................................................................ M–22
M.12.1 VersaFEC ACM ....................................................................................................................................... M–22
M.12.2 VersaFEC-2 ACM ................................................................................................................................... M–23
M.13 Field Upgrade Procedure – VersaFEC-2 Option Card ...................................................... M–25
M.13.1 Overview ................................................................................................................................................ M–25
M.13.2 Requirements for Field Upgrade ......................................................................................................... M–25
M.13.3 Field Upgrade Procedure .....................................................................................................................
M–26
APPENDIX N. IP SUB-MUX ................................................................................................ N–1
N.1 Overview ........................................................................................................................... N–1
N.2 Available Ratios ................................................................................................................. N–1