PWT-E (Personal Wireless Telecommunications-Enhanced)

A U.S. standard for digital cordless

telephony, based on the pan-European Digital Enhanced Cordless Telecommunications (DECT) standard and essentially an enhancement of PWT. PTW-E extends PWT into the licensed bands of 1850–1910

MHz and 1930–1990 MHz, and tightens the channel separation to 1 MHz. See also channel, cordless telephone, DECT, digital, and PWT.

P × 64 (P times 64) An ITU-T videoconferencing specification more correctly known as H.320 and sometimes referred to as H.261, which actually specifies the video encoding technique. Designed for videoconferencing applications, P × 64 supports p channels of 64 kbps, up to a maximum of 30 channels, which is equivalent to E-1. P × 64 video formats include Common Intermediate Format (CIF), which is optional, and Quarter-CIF (QCIF), which is mandatory in compliant codecs. H.261 CIF supports 352 × 288 = 101,376 pixels per frame and 30 frames per second (fps), although lower frame rates also are supported. QCIF supports 176 × 144 = 25,344 pixels per frame, exactly 1⁄4 the resolution of CIF.

See also CIF, codec, encode, frame, frame rate, fps, H.261, H.320, ITU-T, pixel, video, videoconference, and QCIF.

• high-order mode
• high-pass filter
• High Performance Parallel Interface (HIPPI)
• high speed
• high-speed channel (H channel)
• High-Speed Circuit Switched Data (HSCSD)
• High Speed Downlink Packet Access (HSDPA)
• High Speed Uplink Packet Access (HSUPA)
• high-tier
• high voltage (HV)
• HiperACCESS (High performance radio ACCESS)
• HiperLAN/1 (High performance radio Local Area Network version 1)
• HiperLAN2 (High performance radio Local Area Network version 2)
• HiperMAN (High performance radio Metropolitan Area Network)
• HIPPI (HIgh Performance Parallel Interface)
• Hockham, George
• hold
• hold
• Holmes, E.T.
• home page
• home page
• HomePlug
• home run
• hook switch
• hoot