Paradyne manual CPX-1000 Voice Services Platform

A single shelf can support additional subscribers by adding more network modules or using the spare capacity of existing network modules.

1000-A2-GN22-00 1. Voice-over-Broadband Networking

CPX-1000

Voice Services

Platform

The heart of our VoBB solution is the CPX-1000. IADs, supplied by other manufacturers, reside at subscriber premises. Each IAD provides dial tone to standard (POTS) local telephones and data service, using a single transmission link.

The network architecture provided by the CPX-1000 enables ICPs to extend local dial tone services from an existing Class 5 switch over a packet-based access network. From this perspective, as a loop extender, voice-over-broadband is functionally similar to traditional Digital Loop Carrier (DLC) equipment, where the Class 5 switch provides the actual dial tone, as well as Custom Local Area Signaling Services (CLASS) and calling features.

However, unlike traditional DLCs, which supply the physical subscriber line interface at the central office, the packet architecture places that interface at the subscriber premises.

The benefits of this architecture are:

better voice quality, by performing analog-to-digital

￿conversion near the phone

more efficient use of copper connections between the subscriber premises and the Class 5 switch

The CPX-1000 supports any broadband access network technology, including voice-over-T1, voice-over-DSL, and voice-over-wireless local loop (Figure 1–1on page 1-2).

The CPX-1000 is a carrier-class, rack-mounted shelf with redundant components.

The CPX-1000 incorporates a scalable architecture within a single shelf, or by using multiple CPX shelves.

￿Multi-shelf equipment is comprised of more than one CPX ￿when the capacity of a single shelf is exceeded.

Most shelf components are modules comprised of a line card and a transition card. The line card installs in the front of the CPX and the transition card installs in the rear. A passive midplane within the CPX shelf connects the line modules and transition modules.

February 2003 1-3