Subsystem Multiplex (Sub-Mux; J.2.5 Fast Options - Comtech EF Data CDM-425 Installation And Operation Manual

Comtech EF Data's VersaFEC
pending technology wholly owned and developed by Comtech EF Data and CEFD sister division
Comtech AHA Enterprise Products Group, can be used with the IP Packet Processor to maximize
throughput.
ACM converts available link margin into additional throughput, thereby maximizing throughput
under all conditions, including rain fade, inclined orbit satellite operation, antenna mispointing,
interference and other impairments.
J.2.4 Subsystem Multiplex (Sub-Mux)
Appendix L. IP SUB-MUX
Sub-Mux is a secondary framing structure that combines IP traffic with any currently available
combination of framing and interface type (excluding IP itself). A specific, user-selected ratio
references the composite data rate to the modulator, and from the demodulator to the primary,
non-IP interface rate.
Sub-Mux capability can be used with the IP Packet Processor to multiplex a primary serial
synchronous or G.703 traffic stream with IP.

J.2.5 FAST Options

• Chapter 5. FAST ACTIVATION PROCEDURE
• Chapter 6. FRONT PANEL OPERATION
If there is a need to upgrade the CDM-425 Advanced Satellite Modem IP Packet Processor's
functionality, Comtech EF Data provides Fully Accessible System Topology (FAST), a technology
that permits the purchase and installation of options through special authorization codes. These
unique Fast Access Codes may be purchased from Comtech EF Data during normal business
hours, and then loaded into the unit using the front panel keypad. See Chapter 6. FRONT
PANEL OPERATION, Sect. 6.2.8 SELECT: FAST Menus.
Appendix J
®
Adaptive Coding and Modulation (ACM) feature, a patents-
J–3
CDM-425 Advanced Satellite Modem
MN-CDM-425
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