Comtech EF Data CDM-625A Installation And Operation Manual page 632

CDM-625A Advanced Satellite Modem
Appendix L
L.2.5.1 Advanced Quality of Service (QoS)
The IP Packet Processor incorporates multi-level QoS to ensure the highest quality of service
with minimal jitter and latency for real-time traffic, priority treatment of mission critical
applications and maximum bandwidth efficiency.
The supported modes of QoS are:
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DiffServ – Industry-standard method of providing QoS, enabling seamless co-existence
in networks that implement DiffServ
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Max/Priority – Provides multi-level traffic prioritization with the ability to limit
maximum traffic per priority class
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Min/Max – Provides a Committed Information Rate (CIR) to each user-defined class of
traffic with the ability to allow a higher burstable rate depending on availability
When using rule-based QoS, you can configure up to 32 different rules based on:
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Source IP address and subnet mask
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Source Port
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Protocols (well known)
L.2.5.2 Advanced Encryption Standard (AES) Encryption
Chapter 7. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT:
•
•
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When the AES Encryption option is active and enabled on a WAN route, the IP Packet Processor
will encrypt all outgoing traffic on the WAN, and decrypt any encrypted traffic it receives.
L.2.5.3 Header Compression
The IP Packet Processor incorporates industry-leading header compression for IP traffic. Header
compression can reduce the 40-byte IP/UDP/RTP header to as little as 1 byte; for TCP/IP, the
40-byte header is reduced to as little as 3 bytes.
For applications such as Voice-over-IP (VoIP), header compression can provide bandwidth
savings exceeding 60%. For example, the 8 kbps G.729 voice codec requires 24 kbps of IP
bandwidth once encapsulated into an IP/UDP/RTP datagram. With header compression, the
same voice call needs about 8.5 kbps – a saving of almost 65%.
Sect. 7.5.4.3.3.1 Configuration | Routing | Routes
Sect. 7.5.4.3.4 Configuration | Managed Switch
Sect. 7.5.4.3.5.3 Configuration | WAN | Encryption
Destination IP address and subnet mask
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Destination Port
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Priority
L–4
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MN-CDM625A