Ip Packet Processor Features; Streamline Encapsulation (Sle); Modes Of Operation; Subsystem Multiplex (Sub-Mux) - Comtech EF Data CDM-625 Installation And Operation Manual

CDM-625 Advanced Satellite Modem
IP Packet Processor Option
18.2

IP Packet Processor Features

18.2.1

Streamline Encapsulation (SLE)

The IP Packet Processor includes Comtech EF Data's patent-pending, very low overhead
Streamline Encapsulation (SLE). SLE can reduce the encapsulation overhead by as much as 65%
compared to industry-standard HDLC.
18.2.2

Modes of Operation

Chapter 16. ETHERNET NETWORK CONFIGURATION
A CDM-625 equipped with the IP Packet Processor can operate in four modes to support Point-
to-Point and Point-to-Multipoint network topologies:
• Router Point-to-Point
• Router Remote
18.2.3

Subsystem Multiplex (Sub-Mux)

Chapter 15. 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.
18.2.4

Adaptive Coding and Modulation (ACM)

Chapter 17. ADAPTIVE CODING
Comtech EF Data's VersaFEC® Adaptive Coding and Modulation (ACM) feature, a patents-
pending technology wholly owned and developed by Comtech EF Data and CEFD sister division
Comtech AHA Corp., 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.
• Router Hub
• Managed Switch
MODULATION (ACM)
AND
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MN-CDM625