ISOCHRONOUS PIPES CHANNEL MAPPING

摘要

Improved methods and arrangements are provided for supporting multiple simultaneous isochronous data transfers in a stream pipe of a Universal Serial Bus (USB). The stream pipe is subdivided into a plurality of channels. Devices requiring isochronous data transfers over the USB are dynamically assigned to use a particular channel as defined and mapped using a channel assignment message. In this manner, a plurality isochronous data transfers can be accomplished simultaneously within a single stream pipe. The improved methods and arrangements can be advantageously applied to computer telephony systems that need to support a plurality of user access devices and/or connect to multiple external telephone lines.