Comtech EF Data CDM-760 - Manual (Page 15)

Table of Contents Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760 / CD-CDM760
xi
APPENDIX F. OPTIONAL HIGH-SPEED PACKET PROCESSOR ............................................... F–1
F.1 High-Speed Packet Processor – Introduction ......................................................................................... F–1
F.1.1 High-Speed Packet Processor – Operational Requirements .................................................................... F–1
F.1.1.1 Major Assemblies ............................................................................................................................ F–1
F.1.1.2 Limitations and Interoperability/Compatibility Considerations ...................................................... F–2
F.1.2 High-Speed Packet Processor Field Upgrade ........................................................................................... F–2
F.1.2.1 Field Upgrade Overview .................................................................................................................. F–2
F.1.2.2 Requirements for Field Upgrade ..................................................................................................... F–2
F.1.2.3 Field Upgrade Procedure ................................................................................................................. F–3
F.2 CDM-760 High-Speed Packet Processor Configuration and Operation ................................................... F–9
F.2.1 CDM-760 Operational Overview .............................................................................................................. F–9
F.2.2 Use the CDM-760 Front Panel to Enable Packet Processor Operation .................................................. F–10
F.2.3 CDM-760 Configuration – HTTP (Web Server) Interface ........................................................................ F–12
F.2.3.1 Conditional Access to High-Speed Packet Processor Pages .......................................................... F–13
F.3 High-Speed Packet Processor Features ................................................................................................ F–15
F.3.1 Modes of Operation ............................................................................................................................... F–15
F.3.1.1 Static Route Configuration ............................................................................................................ F–15
F.3.2 Quality of Service (QoS) ......................................................................................................................... F–18
F.3.3 Header Compression .............................................................................................................................. F–19
F.3.4 FAST Options .......................................................................................................................................... F–19
APPENDIX G. ADAPTIVE CODING AND MODULATION (ACM) OPTION .............................. G–1
G.1 Overview ............................................................................................................................................... G–1
G.2 Background ........................................................................................................................................... G–2
G.2.1 ACM Operational Link Example ............................................................................................................... G–4
G.3 ACM System Description ....................................................................................................................... G–6
G.4 CDM-760 ACM Scheme ......................................................................................................................... G–9
G.4.1 Target Es/No Margin ............................................................................................................................... G–9
G.4.2 Distortion Adaptation / Modulation Type Impairment ......................................................................... G–10
G.4.3 Pilots ...................................................................................................................................................... G–11
G.4.4 Long and Short Frames ......................................................................................................................... G–11
G.4.5 Monotonic vs. Non-monotonic Operation ............................................................................................ G–11
G.4.6 ModCod Selection ................................................................................................................................. G–12
G.4.7 ACM Congestion Control ....................................................................................................................... G–16
G.4.8 Notes and Recommendations ............................................................................................................... G–17
G.5 CDM-760 ACM Configuration and Operation ....................................................................................... G–19
G.5.1 CDM-760 Operational Overview ........................................................................................................... G–19
G.5.2 ACM Operation Using the CDM-760 Front Panel .................................................................................. G–20
G.5.2.1 Configure ACM Operation ............................................................................................................ G–20
G.5.2.2 Monitor ACM Performance and Operation .................................................................................. G–21
G.5.3 ACM Operation Using the CDM-760 HTTP (Web Server) Interface ...................................................... G–22
G.5.3.1 Access the CDM-760 HTTP Interface ............................................................................................ G–23
G.5.3.2 HTTP Interface – ACM Pages ........................................................................................................ G–23
G.5.3.2.1 Configure ACM Operation ..................................................................................................... G–24