CDM-625A Advanced Satellite Modem
The CDM-625A Advanced Satellite Modem builds on our legacy of providing
the most efficient and reliable satellite modems. With support for VersaFEC
®
Forward Error Correction (FEC), the revolutionary DoubleTalk
Carrier-in-
Carrier
bandwidth compression, additional rolloffs and advanced packet
processing, the CDM-625A provides significant savings under all conditions.
This combination of advanced technologies enables multi-dimensional
optimization, allowing satellite communications users to:
• Minimize operating expenses (OPEX)
• Maximize throughput without using additional transponder resources
• Maximize availability (margin) without using additional transponder
resources
• Minimize capital expenses (CAPEX) by allowing a smaller BUC/HPA
and/or antenna
• Or, a combination to meet specific business needs
• Mobile Network Operators
• Telecom Operators
• Satellite Service Providers
• Government & Military
• Enterprise
• Offshore
• Mobile Backhaul
• G.703 Trunking
• IP Trunking
• Offshore & Maritime Communications
• Enterprise
• Communications on-the-Move
• Satellite News Gathering
• DoubleTalk Carrier-in-Carrier bandwidth compression
• Carrier-in-Carrier Automatic Power Control
• VersaFEC-2 High Performance LDPC with Adaptive Coding
and Modulation (ACM), Short Block and Long Block
• VersaFEC FEC with Adaptive Coding and Modulation (ACM)
• 5%, 10%, 15%, 20%, 25% and 35% Filter Rolloff
• Packet Processor with header compression, payload
compression, advanced Quality of Service (QoS) and
Managed Switch Mode with VLAN support
• Integrated 4-port managed Ethernet switch with VLAN and QoS
• Jumbo frame support
• Dual Band Capability: 70/140 MHz and extended L-Band
(950 – 2250 MHz) in same unit
• Data Rate: 18 kbps to 25 Mbps
• Symbol Rate: 18 ksps to 12.5 Msps
• Modulation: BPSK, QPSK/OQPSK, 8PSK/8-QAM/8-ARY,
16-QAM/16-ARY, 32-ARY
• FEC: Viterbi, Sequential, Concatenated Reed Solomon, TCM,
Turbo Product Code (TPC) (IESS-315 Compliant), LDPC Code
, VersaFEC (low-latency LDPC) and VersaFEC-2 (high
performance LDPC)
• Widest Range of data interfaces: EIA-422/530, V.35, G.703 T1,
G.703 E1, G.703 T2, G.703 E2, Quad G.703 E1, ASI, LVDS,
HSSI, 4-port 10/100Base-T Ethernet
• IEEE 1588v2 Precision Time Protocol
• Sub Mux to multiplex IP/Ethernet traffic with serial or G.703
traffic
• Drop & insert for T1/E1
• Enhanced D&I++ for single T1/E1 & quad E1
• Management: 10/100Base-T Ethernet with SNMP, Distant
End SNMP Proxy, HTTP, Telnet and EIA-232/EIA-485
• RADIUS Client
• Carrier ID using MetaCarrier
®
Technology
• Embedded Distant-end Monitor and Control (EDMAC)
• Automatic Uplink Power Control (AUPC)
• Engineering Service Channel (ESC/ESC++)
• Standard high-stability internal reference (± 6 x 10
-8
)
• 5-tap Adaptive Equalizer
• L-Band TX: 10 MHz reference for BUC, FSK communications
and optional BUC power supply
• L-Band RX: 10 MHz reference and LNB power supply
• L-Band: Advanced FSK for LPOD M&C
• 1:1 and 1:10 redundancy switches available
• Backwards compatible with CDM-625
• Environmentally Resistant version (CDMER-625A) available
Doubletalk Carrier-in-Carrier
DoubleTalk Carrier-in-Carrier, based on patented “Adaptive Cancellation” technology, allows transmit and receive carriers of a duplex
link to share the same transponder bandwidth. DoubleTalk Carrier-in-Carrier is complementary to all advances in modem technology,
including advanced FEC and modulation techniques. As these technologies approach theoretical limits of power and bandwidth
efficiencies, DoubleTalk Carrier-in-Carrier utilizing advanced signal processing techniques provides a new dimension in bandwidth
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