RAD Data Communications is all set to unfurl a complete set of gateways that support 2G and 3G cellular backhaul over landline, satellite and microwave radio links at CommunicAsia 2009, which is being held in Singapore June 16-19.

RAD’s Vmux-405, Vmux-425 and Vmux-445 GSM Abis optimization gateways optimize GSM Abis (BSC-to-BTS) traffic and transport it over an E1/STM-1 or 10/100BaseT or Gigabit Ethernet link. Using these devices, cellular operators are able to lower their demand for bandwidth and improve the utilization of their access infrastructure, especially over expensive satellite and microwave links. The Vmux-445 will also support Ater optimization.

RAD’s Vmux trunking solutions complete its offering to mobile operators and enterprises. Widely deployed in the Indian region, the MiniCVS NG is a fully redundant 3G media gateway that provides compressed voice transmission over TDM and IP networks. It significantly reduces satellite bandwidth consumption and lowers leased line costs for cellular operators, carriers and call centers. Employing powerful voice compression algorithms as well as RAD’s patented TDMoIP pseudowire technology, the Mini CVS NG 3G media gateway can compress up to 16 full E1 circuits over a single E1 line or IP uplink. The MiniCVS NG guarantees optimal bandwidth utilization while maintaining toll quality voice, lowering both operating (OpEx) and capital expenses (CapEx). At the same time, all legacy services and signaling are maintained. It is a fully redundant unit and also features uplink redundancy, load sharing and an echo canceller.

“By optimizing the Abis interface, the Vmux-405, Vmux-425 and Vmux-445 complete RAD’s cellular offering by complementing our MiniCVS NG or Gmux-2000 voice trunking gateways, which optimize and compress the E (MSC-to-PSTN) interface,” notes Toby Korall, Senior Product Line Manager at RAD Data Communications. “RAD, therefore, offers a complete solution that reduces OpEx while enabling an expansion in network capacity.”

Clock Recovery over any Transmission Network

The Vmux-405 connects up to three E1 digital ports over a single E1 or up to four E1s over Ethernet, while the Vmux-425 connects up to six E1 digital ports over an E1 or Ethernet and the Vmux-445 an impressive 63 E1s over E1/STM-1 or Gigabit Ethernet. A single Vmux at the BSC side can operate with up to 20 remote units at the BTS over a TDM or Ethernet/IP/MPLS packet switched network (PSN) in a point-to-multipoint application. Clock recovery over any transmission network enables the BTS to synchronize timing with the BSC without a GPS, which is a critical advantage since PSNs do not provide timing mechanisms of their own. A Smart Packet Drop (SPD) mechanism, moreover, enables additional optimization of voice traffic by discarding nonessential voice frames without any affect on voice quality.

All of RAD’s Vmux products conform to all relevant industry standards and interoperate with equipment from major base station system vendors.

Lalit Yadav/ITvoir Network