Comtech EF Data CDM-750 Installation And Operation Manual page 10

CDM-750 Advanced High-Speed Trunking Modem
Table of Contents
B.2 Optional PIIC Modules .......................................................................................................... B-4
B.2.1 G.703 E3/T3/STS-1 PIIC Module (CEFD P/N PL-0000795) ................................................................. B-4
B.2.1.1 G.703 E3/T3/STS-1 PIIC Module Summary of Specifications ............................................ B -5
B.2.1.1.1 General Specifications ................................................................................................ B -5
B.2.1.1.2 Interface Specifications .............................................................................................. B -5
B.2.2 STM-1 Copper PIIC Module Kit (CEFD P/N KT-0000255) ................................................................... B-6
B.2.2.1 STM-1 Copper PIIC Module Summary of Specifications ................................................... B -7
B.2.3 OC-3 Single/Multi Mode PIIC Module Kits (CEFD P/N KT-000025X) . ................................................ B-8
B.2.3.1 OC-3 Single/Multi Mode PIIC Module Summary of Specifications ................................... B -9
APPENDIX C. ADAPTIVE CODING AND MODULATION (ACM) OPTION ........................ C-1
C.1 Introduction ......................................................................................................................... C-1
C.2 Background .......................................................................................................................... C-2
C.2.1 ACM Operational Link Example ........................................................................................................... C-4
C.3 ACM System Description . ...................................................................................................... C-6
C.4 CDM-750 ACM Scheme ......................................................................................................... C-8
C.4.1 Target Es/No Margin . ............................................................................................................................ C-8
C.4.2 Distortion Adaptation / Modulation Type Impairment ..................................................................... C-9
C.4.3 Pilots . .................................................................................................................................................... C-10
C.4.4 Long and Short Frames . ...................................................................................................................... C-10
C.4.5 Monotonic Operation . ........................................................................................................................ C-10
C.4.6 ModCod Selection . .............................................................................................................................. C-12
C.5 Configuring ACM in the CDM-750 ....................................................................................... C-14
C.5.1 ACM Configuration via the Front Panel . ............................................................................................ C-16
C.5.2 ACM Configuration via the CDM-750 Web Server Interface . .......................................................... C-17
C.6 Monitoring ACM Performance and Statistics....................................................................... C-18
C.6.1 ACM Congestion Control . ................................................................................................................... C-19
C.6.2 Notes and Recommendations ........................................................................................................... C-20
C.6.3 ACM - Summary of Specifications . .................................................................................................... C-21
APPENDIX D. DOUBLETALK CARRIER-IN-CARRIER (CNC) OPTION ............................ D-1
D.1 Introduction ......................................................................................................................... D-1
D.1.1 What is DoubleTalk Carrier-in-Carrier? ............................................................................................... D -1
D.2 Application Requirements .................................................................................................... D-2
D.3 Operational Details . .............................................................................................................. D-4
D.4 System Functionality and Operational Considerations .......................................................... D-5
D.4.1 DoubleTalk Carrier-in-Carrier Cancellation Process ........................................................................... D -8
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MN-CDM750