Legerity Integrates Line Testing in Packet Voice Interfaces

Legerity introduced its VoiceEdge architecture for integrating advanced line testing functionality into carrier-class packet voice equipment. Legerity's programmable VoicePort chips provide a functional line interface for short and medium loop applications. Key features include: high voltage switching regulator, self-test, line test capabilities, integrated ringing (up to 140-Vpk), worldwide software programmability, wide band mode, flexible signal generator with tone cadencing and integrated unbalanced ringing.



Legerity's new architecture is comprised of more than 20 new products, including the VE790 series interface chips for central office equipment, DSLAMs and DLCs; and the VE880 series one- and two-channel interface chips for consumer applications such as voice-enabled cable and DSL modems.

The VE790 analog line interface chipsets integrate the advanced line testing functionality into the silicon, which until now was performed by expensive dedicated hardware called test heads. This integration allows for the elimination of test heads in mid to high line count systems and provides line test functionality in low line count systems for the first time. The new chipset is also the first ever to integrate all the functionality required to control and manage multiple telephone lines on a single line card. Functions such as ring sequencing, caller ID sequencing and call progress tone are handled within the chipset, thus dramatically reducing the engineering effort to add voice to DSLAM systems.



Legerity said the new capabilities would enable service providers to solve most customer issues from the office by executing remote line test measurements, thereby eliminating truck rolls and shortening the response time to the customer. http://www.legerity.com