The CDD-564, CDD-564L and CDD-562L are integrated IP demodulators that receive two or four
independent 70/140 MHz or L-Band channels (depending on model) and combine the output into a single
10/100Base-T Ethernet port for transmission onto the LAN. The demodulators and the integrated IP Module
are housed in a 1RU chassis. The demodulators are designed to operate with Comtech EF Data’s IPenabled
products including modems and Performance Enhancement Proxies.
Quality Of Service (QoS)
The CDD-564/L and CDD-562L transparently pass the QoS prioritization established at the transmit end by
the CDM-570/L-IP Satellite Modem.
Header Decompression Option
Header compression reduces the bandwidth required for Voice over Internet Protocol (VoIP) by as much as
60%. Example: A G.729 voice codec, operating at 8 kbps, requires 32 kbps bandwidth once encapsulated
into an IP/UDP/RTP frame. With IP/UDP/RTP header compression, the same voice call needs only 10.8
kbps total WAN satellite bandwidth. Typical Web/HTTP traffic can be reduced by 10% via IP/TCP header
compression. Each demodulator can be independently configured for header decompression.
Payload Decompression Option
Payload compression can reduce the required satellite bandwidth by up to 40%. Each demodulator can be
independently configured for payload decompression.
The CDD-564/L and CDD-562L simplify hub installations by reducing rack space and costs by providing four independent demodulators
in a 1RU chassis. A bank of CDD-564/L or CDD-562L demodulators is ideal for a star topology network consisting of a shared outbound
carrier with multiple return carriers from the remote sites. At remote sites, the CDD-564/L or CDD-562L enables mesh connectivity
between multiple sites. Operating in mesh topology with direct links between sites eliminates double-hop through the hub, thereby
conserving bandwidth and reducing latency.
Oil Field Service
Government & Military
Disaster Recovery &
Offshore & Maritime
Vipersat Management System Integration
A Vipersat powered network integrates this advanced demodulator with a powerful network management tool, the Vipersat Management
System (VMS). In addition to the traditional Monitoring and Control of the CDM-570/L-IP modems and the CDD-564/L and CDD-562L
demodulators, the VMS allows these devices to share bandwidth, and when needed, switch automatically to a dedicated SCPC channel.
VMS provides for dynamic bandwidth allocation while in SCPC mode, automatically altering the bandwidth based on traffic conditions.
This effectively enables the network to better handle connection oriented applications and reduce network congestion, jitter and latency.
The VMS also allows for dynamic point-to-point mesh connections to be established between remotes.