1432 SHDSL CPE
The 1432 SHDSL CPE enables service providers to offer Frame Relay and leased line services over an ATM based DSL broadband network. The Frame Relay service uses the Frame Relay forum recommendations FRF.5 or FRF.8. FRF.5 transports the Frame Relay service over the ATM network. FRF.8 converts the Frame Relay service into an ATM service. The leased line service is emulated using the ATM Circuit Emulation Service (CES).

The 1432 SHDSL CPE has a serial interface on a DB25 connector. The interface can be confi gured as a X.21, V.35, V.36 (RS-449), RS-530 or RS- 530A interface to suit the needs for almost any serial interface type. Conversion cables to the standard connector type are available. The 2 pair version has an additional Ethernet interface to combine LAN and legacy traffi c over the same SHDSL WAN connection.

Fully supported by the TDRE (Total Dynamic Routing Engine), the unit is manageable through a variety of maintenance and management tools. The 2 pair version supports also differentiated IP services including VPNs (Virtual Private Networks) and the delivery of application dependent QoS (Quality of Service) connections. In addition to connections to DSLAMs, the 1432 SHDSL 2P CPE can also be used in a point-to-point confi guration. In this case, the CES functionality, combined with the built-in router allows the simultaneous transport of clear channel and Ethernet based services. This compact desktop CPE can be mounted in a rack through an optional rack mount kit. It can be delivered with a power plug for 110 Vac, 230 Vac, 24 Vdc or -48 Vdc powering.

SHDSL LINE INTERFACE
The 1432 SHDSL CPE uses symmetrical fullduplex transmission up to 2.3 or 4.6 Mbps over a single or dual two-wire unconditioned unshielded twisted-pair cable. The line speed can be adapted to optimise the throughput as a function of the characteristics of the local loop.