Comtec CDM-840 Installation And Operation Manual page 14

CDM-840 Remote Router
Table of Contents
E.9 Summary .......................................................................................................................... E-14
APPENDIX F. CARRIER ID (DVB-CID METACARRIER
F.1 Functional Overview ........................................................................................................... F-1
F.1.1 About MetaCarrier .................................................................................................................... F-1
F.1.2 Functional Description .............................................................................................................. F-2
F.2 CDM-840 Carrier ID Operation ............................................................................................. F-3
F.2.1 CID Operation - CDM-840 HTTP Interface ............................................................................... F-3
F.2.2 CID Operation - Serial Remote Control .................................................................................... F-6
APPENDIX G. ECM (ENTRY CHANNEL MODE) ............................................................... G-1
G.1 Functional Overview .......................................................................................................... G-1
G.1.1 ECM Terminology .................................................................................................................... G-1
G.1.2 ECM Overview ......................................................................................................................... G-2
G.1.3 CDM-840 ECM Message Processing ........................................................................................ G-5
G.1.4 CDD-880 ECM Message Processing ......................................................................................... G-6
G.2 ECM Operational Scenarios ................................................................................................ G-7
G.2.1 Scenario 1 - VMS Initial Registration Process ......................................................................... G-7
G.2.2 Scenario 2 - Reverted or Auto-Recovered Messages.............................................................. G-7
G.2.2.1 ECM Revert Cycle Timing ................................................................................................. G-8
G.2.2.2 ECMv2 Backoff Algorithm ................................................................................................ G-8
G.3 ECM Operation ................................................................................................................ G-10
G.3.1 ECM Operation - CDM-840 Serial Remote Control ............................................................... G-11
G.3.2 ECM Operation - HTTP Interfaces ......................................................................................... G-12
G.3.2.1 CDM-840 HTTP Operation - Remote Router Terminals ................................................ G-14
G.3.2.2 CDD-880 HTTP Operation - Hub Channel Controller (HCC) ........................................... G-17
G.3.2.2.1 Tap Message ............................................................................................................ G-19
G.3.2.2.2 HCC Configuration ................................................................................................... G-19
G.3.2.2.3 Hub Operation ......................................................................................................... G-19
APPENDIX H. HEADER AND PAYLOAD COMPRESSION ............................................... H-1
H.1 Functional Overview .......................................................................................................... H-1
H.1.1 Traffic Optimization ..................................................................................................................H-2
H.1.2 Compression Performance .......................................................................................................H-2
H.2 CDM-840 Header and Payload Compression Operation ....................................................... H-4
H.2.2 Enable or Disable Header and Payload Compression Operation .............................................H-6
H.2.3 Configure Header and Payload Compression Refresh Rates ....................................................H-7
H.2.4 View Header and Payload Compression Statistics ...................................................................H-8
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).................................................. F-1
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MN-CDM840 / CD-CDM840
Revision 3