Comtech EF Data CDM-570A - Manual (Page 20)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A / CD-CDM570A
Table of Contents Revision 2
xviii
L.2 QoS with ACM (Adaptive Coding and Modulation) ............................................................. L–12
L.2.1 Maximum Clipping .................................................................................................................................. L–12
L.2.2 Minimum Data Rate ............................................................................................................................... L–12
L.2.3 DiffServ w/ACM QoS Example ............................................................................................................... L–12
L.3 Glossary of Terms ............................................................................................................. L–13
L.4 QoS List of Supported RFCs (Requests for Comment) ......................................................... L–15
APPENDIX M. TRANSMIT SPECTRUM FILTERING OPTIONS ......................................... M–1
M.1 Overview .......................................................................................................................... M–1
M.2 Observations and Recommendations ................................................................................ M–1
APPENDIX N. 1:1 IP REDUNDANCY ................................................................................. N–1
N.1 Overview ........................................................................................................................... N–1
N.2 Serial/Telnet CLI Operation Quick Reference ...................................................................... N–2
N.3 CRS-XXX 1:1 Redundancy Switch Functional Description ..................................................... N–4
N.3.1 CRS-180 70/140 MHz 1:1 Redundancy Switch ..................................................................................... N–4
N.3.2 CRS-170A L-Band 1:1 Redundancy Switch ............................................................................................ N–4
N.4 CDM-570A/570AL-IP 1:1 IP Data Switching Functional Description ...................................... N–6
N.5 CDM-570A/570AL-IP 1:1 IP Redundancy Configuration ....................................................... N–8
N.6 Cabling the CDM-570A-IP ................................................................................................. N–10
N.7 Cabling the CDM/R-570AL-IP ............................................................................................ N–11
APPENDIX P. ADAPTIVE CODING AND MODULATION (ACM) OPTION ........................ P–1
P.1 Overview ............................................................................................................................ P–1
P.2 Background ........................................................................................................................ P–2
P.3 Requirements for ACM ........................................................................................................ P–3
P.4 An Existing Satellite ACM Scheme ........................................................................................ P–5
P.5 Disadvantages of DVB-S2 .................................................................................................... P–5
P.6 VersaFEC ACM .................................................................................................................... P–6
P.7 VersaFEC ACM Latency ........................................................................................................ P–8