Implement A Single-Chip, Multichannel VoIP DSP Engine

摘要

The VoIP engine's scalable design handles a full T1 trunk (24 channels) of compressed voice or fax signals over an IP network. The Internet explosion has created an affordable communication pipe. It's not only facilitating e-mail correspondence and web browsing, though. Voice over Internet protocol (VoIP) communications is now garnering support as well. Many packet-based voice technologies can be found in VoIP products, like VoIP gateways, voice-capable cable modems, IP phones, and PBXs. All of these new applications rely on DSP technology for multimedia processing. In fact, designers can implement a single-chip multichannel VoIP DSP engine that is scalable and can handle a full T1 trunk (24 channels) of compressed voice or fax communications over an IP network (Fig. 1).