RAD’s LA-110 integrated access device enables carriers to deliver voice, LAN and data traffic to small and medium-sized enterprises (SMEs), over low-cost xDSL access lines and existing ATM networks. Typically used in corporate applications and cellular backhaul, the LA-110 features a variety of network interface alternatives including ADSL/ADSL2+, SHDSL, IMA over SHDSL, E1 and Ethernet. User interfaces include 10/100BaseT and optional E1 (TDM or UNI), ISDN, VoDSL or serial FR/X.21/V.35.
Enterprises requiring large capacity at headquarters can benefit from a network that combines a lower speed DSL service at branch offices and higher speed ATM at the main office. Supporting AAL1 constant bit rate (CBR) traffic, the LA-110 guarantees reserved bandwidth and minimum delay for mission-critical and real-time applications. This enables delivery of TDM services at a fraction of the cost of leased lines, while maintaining the same quality of service (QoS).
In addition to allowing transparent delivery of serial data streams and circuit-emulated services (CES) over ATM (AAL1), LA-110’s UNI network interface incorporates additional ATM adaptation layers. These include AAL2, supporting ATM loop emulation services (LES) for PSTN and ISDN BRI/PRI access, as well as AAL5, for Frame Relay, Ethernet and IP packet traffic.
Pseudowire emulation enables carriers to provide legacy services at high quality over IP DSLAMs and PSN for leased line and cellular backhaul applications.The LA-110 supports standard pseudowire encapsulation methods, including SAToP, CESoPSN, TDMoIP, ATMoPSN, HDLCoPSN, or FRoPSN.
To increase the bandwidth capacity of available SHDSL lines, the LA-110 features an optional IMA (inverse multiplexing over ATM) bonding over 4 × 2-wire SHDSL lines. This allows carriers and service operators to cost effectively fill the bandwidth gap between lower speed xDSL and higher speed fiber, providing up to 9.2 Mbps for distances of up to 8 kilometers (5 miles).
Supporting ATM QoS, the LA-110 enables carriers to deliver all voice and data services with performance guarantees. Traffic shaping per VC secures the priority of critical applications, with service classification per CBR, VBR, UBR and UBR+ bandwidth profiles. Additionally, operation, administration and maintenance (OAM) functionalities provide complete end-to-end control of the service, including such attributes as fault notification, connectivity monitoring, physical and VCC loopbacks and delay measurements. The LA-110’s comprehensive diagnostics and statistics collection allow service provides to reduce their operational and maintenance costs, by minimizing technician truck rolls for on-site inspections to localize and repair network faults.
The LA-110 incorporates a full-featured, built-in bridge or IP router with integrated firewall. Such functionality eliminates the need for an expensive external router and provides an excellent solution for LAN-to-LAN or Internet access services. NAT functionality allows multiple users to share a single public IP address, while Layer 2 VLAN tagging is also supported.
The LA-110 features flexible management capabilities, including local management via an ASCII terminal (RS-232). In addition, remote management can be performed either inband or out-of-band, using the network or user ports. Advanced FCAPS (Fault, Configuration, Accounting, Performance, Security) and diagnostic tools are provided by RADview-EMS, RAD’s carrier-class element management system, via an SNMP-based GUI.
The LA-110 also supports a variety of configuration access channels, including Telnet, SNMP, Web server, and TFTP. Incorporated security features include Secure Shell (SSH), Web-based Secure Socket Layer (SSL), SNMPv3, and RADIUS.
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