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/Ater optimization, 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.

Product Specifications

• 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

• Support G.729 AB, G.723.1 codecs with variable coding rate
• Silence suppression and Digital Speech Interpolation
• T.30 FAX relay (V.29/V.27ter/V.17)
• Modem relay (V.32/V.32 bis/V.22/V.22 bis)
• SS7 signaling transport with optimization (FISU spoofing)
• CCS signaling transport
• Transcoder free operation (end-to-end one hop compression)
• Multi-clique, multi-bearer operation
• End-to-end continuity tone check, detection and regeneration
• Voice channel usage real-time monitoring

Product Specifications

Interfaces

• Digital T1/E1: unframed, fractional, channelized, voice, data, TDM
• T1 line type: ANSI T1.403 (PRI), AT&T TR62411 (D4), and TR 54016 (ESF), Telcordia GR-499-CORE
• T1 encoding: AMI, B8ZS
• E1 line type : CEPT (PRI), G.703/G.704 with or without CRC4 & MF
• E1 encoding: HDB3, AMI
• T1/E1 interface choice of:
  • Balanced 120 Ohms: RJ-21 “Centronics” and RJ-48C individual connectors
  • Unbalanced 75 Ohm: BNC Adapters or BT43 connector backplane
• NFAS, AIS and RDI bits/alarm relay
• Serial interface: EIA-530/V.35 (DB25) up to 8192 kbps
• Ethernet: 10/100 Mbps, RJ-45
• RS-232 serial craft interfacee

Typical Users

• Telecom Operators
• Mobile Operators
• Satellite Service Providers
• Government & Military

• Cellular Backhaul
• Mobile Cellular Tower Applications
• Universal Service Obligations Enabler
• A and E Interface Voice Compression Trunking
• Offshore & Maritime Cellular Over Satellite

All CX-U product E1 interfaces are unbalanced 120 Ohm RJ-48 interfaces. Available accessories include:

• E1 interface Balun (Dual BNC females to RJ-45 male)
• E1 interface Balun (Dual “Siemens” mini-balun to RJ-45 male)
• Interface backplanes: 75 Ohm BT43 (SMZ) connector converter
• Redundant backplane options and interface converters
• GPS kits (external antenna, cabling and mast mount)
• GPS 20 kV lighting protection
• AC Power supply converters