Comtech CDM-625A Advanced Satellite Modem

Comtech CDM-625A Advanced Satellite Modem 

The Comtech CDM-625A is an advanced satellite modem engineered for bandwidth-efficient IP, telecom and mobile backhaul networks. Supporting VersaFEC-2, Adaptive Coding and Modulation and DoubleTalk Carrier-in-Carrier, it helps maximize throughput and link availability while reducing satellite bandwidth and power requirements. The modem supports 70/140 MHz and extended L-band operation and is backward compatible with the CDM-625.

Frequency Range: 50–180 MHz; optional 950–2250 MHz

Data Rate: 18 kbps to 25 Mbps
Symbol Rate: 18 ksps to 12.5 Msps
Modulation: BPSK, QPSK, OQPSK, 8PSK, 8-QAM, 16-QAM and 32-ARY
Data Interfaces: EIA-422/530, V.35, G.703, LVDS, HSSI, ASI and Ethernet configurations
Applications: Mobile backhaul, IP and G.703 trunking, maritime communications, enterprise networks, communications-on-the-move and satellite news gathering

Key Features

• Optional DoubleTalk Carrier-in-Carrier bandwidth compression

• Carrier-in-Carrier Automatic Power Control

• VersaFEC and VersaFEC-2 LDPC with ACM and CCM

• Selectable 5%, 10%, 15%, 20%, 25% and 35% rolloff

• Optional packet processor with header and payload compression

• Advanced QoS, VLAN support and managed-switch operation

• Integrated four-port 10/100Base-T Ethernet switch

• Independently selectable 70/140 MHz and extended L-band IF

• Automatic Uplink Power Control and EDMAC

• IEEE 1588v2 Precision Time Protocol support

• MetaCarrier Carrier ID technology

• Optional BUC and LNB power and 10 MHz reference

• 1:1 and 1:10 redundancy configurations available

• Environmentally resistant CDMER-625A version available