Comtech CX-U RAN Optimization Series

Overview

The CX-U Series brings together a flexible access device and mobile backhaul traffic

optimization, offering a variety of backhaul interfaces and transmission options.

The CX-U offers Abis optimization with additional benefits of 2G/3G aggregation, DCME voice trunking optimization, TDM Pseudowire, all over IP, Frame Relay or MLPPP protocol support. The CX-U products support digital fractional T1/E1, high-speed serial and Ethernet network interfaces with a choice of protocols (Frame Relay, IP/MLPPP) and multiple network backup options. Designed with the utmost reliability in mind, it can support an extended temperature range. Line bypass and optional 100 ms 1+1 hot standby redundancy without service interruption are also available for ultimate availability in challenging remote locations. The CX-U family is comprised of four products: CX-U 1010, CX-U 1220, CX-U 1240 and CX-U 1280, which can be used in stand-alone mode of operation at hubs or aggregation points, or in

conjunction with the CX-U devices located at the remote cell sites.

RAN Optimization

The RAN Optimizer transparently connects between the BTS/BSC and the transmission

network facility, reducing the amount of backhaul bandwidth required to support mobile services over constrained links, such as satellite.

RAN Optimizer Features:

• Transparent GSM FR, EFR, HR and AMR codec optimization

• Supports any data services (GPRS, EDGE, V.110 Fax/Modem)

• IDLE and silence suppression

• HDLC signaling frame extraction and forwarding

• EDGE traffic compression

• Signaling/voice/data traffic prioritization

• Transparent support of CDMA-IS95 traffic

• 3G and CDMA-1X traffic optimization (ATM IDLE cells removal, cell packing, ATM header and payload compression)

• ATM and TDM Pseudowire over IP

• SS7 traffic forwarding and optimization (Ater links)

• End-to-end Abis link continuity check

• Dynamic Abis map interface auto-configuration

• Traffic prioritization and 3 level QoS

• TRX channels usage real-time monitoring

RAN Optimizer Benefits:

• Reduced OPEX / minimal CAPEX
• Increases backhaul capacity
• Reduces transmission capacity requirement in proportion to the effective traffic usage
• Rapid ROI—often in only a few months
• Significant bandwidth savings
• GSM base station Abis/Ater traffic: Minimum 50% bandwidth savings
• Cell site aggregation with statistical multiplexing benefits
• Sustained service quality
• Preserves voice quality and service integrity
• Simple and reliable fail-safe operation
• Dependability
• 10+ years of successful customer deployment