Comtech EF Data CDM-570A User 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