1 include a new hybrid balance
tool for tuning audio levels on analog trunks.
Dual and Quad ISLAC devices are low-voltage CMOS ICs that provide A/D and D/A conversion, filtering, equalization, hybrid balance
, companding, supervision, ringing and test functions, and interfaces to an external microprocessor and the digital backplane.
The STLC60454 four-channel ADSL Analog Front End connects the line driver and hybrid balance
circuit with the digital modem chip.
The ADSL-Optimized SuperPOTS(TM) channel unit assures an improved grade of service and minimizes service impairments when used with ADSL splitters by automatically adjusting both loss and hybrid balance
based on loop length, characteristic impedence, and whether or not an ADSL splitter is installed.
The PeakSHDSL chipset consists of a standards compliant octal digital modem chip (STLC80815) that supports multiple line codes and frame structures; and two quad analog transceivers (STLC60444) to connect the digital modem chip with the line driver and hybrid balance
The chip, which implements codec and 64-tap echo cancellation functions for four telephone lines, provides programmable control of key performance parameters, including gain, hybrid balance
, termination impedance, equalization, and echo cancellation.