The HT9200B is a telecommunications interface IC manufactured by Holtek. It is a single-chip modem device that provides reliable data communications over the standard telephone network. It is packaged in a 14-pin plastic small-outline integrated circuit (SOIC-14_150mil) package, and is compliant with the RoHS directive. The HT9200B is suitable for use in fields such as Automatic Meter Reading (AMR), Telemetry, Paging, Remote Control, Access Control, Voice Messaging, and Wireless Network systems. It features auto rate detection, low power consumption, low external component count, and integrated voice processing functions. The HT9200B has a voice/data switchable feature, which allows it to communicate both voice and data, as well as fax/modem support. It also features auto echo cancellation and answer detection capabilities.