Comtech EF Data CDM-570A - Manual (Page 16)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A / CD-CDM570A
Table of Contents Revision 2
xiv
B.3 Reed-Solomon Outer Codec ................................................................................................ B–3
B.3.1 Closed Network Modes ............................................................................................................................ B–3
B.4 Trellis Coding Modulation (TCM) (FAST Option) ................................................................... B–4
B.5 Turbo Product Codec (FAST Option) ..................................................................................... B–5
B.5.1 TPC Overview ............................................................................................................................................ B–5
B.6 VersaFEC (Short-block LDPC) ................................................................................................ B–7
B.6.1 VersaFEC Extensions ................................................................................................................................. B–8
B.6.1.1 Extended CCM Codes........................................................................................................................... B–8
B.6.1.2 Ultra-Low-Latency (ULL) Codes ........................................................................................................... B–9
B.7 Uncoded Operation (No FEC) ............................................................................................. B–10
APPENDIX C. OFFSET QPSK OPERATION ...................................................................... C–1
APPENDIX D. OPTIONAL HIGH PERFORMANCE PACKET PROCESSOR .................... D–1
D.1 Overview ........................................................................................................................... D–1
D.1.1 Operational Requirements ..................................................................................................................... D–2
D.1.1.1 Major Assemblies ................................................................................................................................ D–2
D.1.1.2 Interoperability Compatibility/Limitations ....................................................................................... D–2
D.1.1.3 High Performance Packet Processor Field Upgrade Procedure..................................................... D–3
D.1.1.3.1 Overview .....................................................................................................................D–3
D.1.1.3.2 Requirements for Field Upgrade ................................................................................D–3
D.1.1.3.3 Field Upgrade Procedure ............................................................................................D–4
D.1.2 High Performance Packet Processor Features ..................................................................................... D–9
D.1.2.1 10/100 BaseT Ethernet Interface ...................................................................................................... D–9
D.1.2.2 Network-Based Management ......................................................................................................... D–10
D.1.2.2.1 Remote Software/Firmware Upgrade via FTP ..........................................................D–10
D.1.2.2.2 Configuration Backup and Restore via FTP ..............................................................D–10
D.1.2.2.3 Event Logging to Capture All Packet Processor Activity ...........................................D–11
D.1.2.2.4 Detailed Statistics of IP Traffic ..................................................................................D–12
D.1.2.3 Static IP Routing for Unicast and Multicast .................................................................................... D–12
D.1.2.4 IGMP Support for Multicast ............................................................................................................. D–12
D.1.2.5 Managed Switch Mode .................................................................................................................... D–12
D.1.2.5.1 Managed Switch Mode Operation ...........................................................................D–12
D.1.2.5.2 Combined Working Mode ........................................................................................D–14
D.1.2.6 Adaptive Coding and Modulation (ACM) ....................................................................................... D–14
D.1.2.7 High Performance Packet Processor Optional FAST Features ..................................................... D–15
D.1.2.7.1 CDM-570A/570AL-Packet Processor Demo Mode ...................................................D–15
D.1.2.7.2 Header and Payload Compression ...........................................................................D–16
D.1.2.7.2.1 IP Header Compression .....................................................................................D–16
D.1.2.7.2.2 Payload Compression ........................................................................................D–17
D.1.2.7.2.3 ALDC vs. LZS Compression Comparison ............................................................D–17
D.1.2.8 Advanced Quality of Service (QoS) .................................................................................................. D–18
D.1.2.9 Vipersat / VFS ..................................................................................................................................... D–19