same cable pair as the voice path yet does not require filters. duplex transmission Simultaneous, two-way, independent transmission. Also called full- duplex transmission. duplexing technique A procedure for separating incoming and outgoing conversations. DVB (Digital Video Broadcasting) A suite of internationally accepted, open standards for DVB (Digital Video Broadcasting) Project A European organization that has authored many specifications for satellite and cable broadcasting of digital signals. DVB-C (DVB-Cable) An open standard for digital video transmission over cable. DVB-H (DVB-Handheld) A mobile TV standard promoted by ETSI that saves batteries and offers mobility with high data rates, single-antenna reception, impulse noise tolerance, increased general robustness, and seamless handoffs. DVB-MHP (DVB-Multimedia Home Platform) The DVB Project's open middleware tem for DTV that enables the reception and execution of interactive, Java-based applications on a TV set. DVB-S (DVB-Satellite) An open standard for digital video broadcast over satellites. DVB-S supports only MPEG-2 encoded video streams. DVB-S2 (DVB-Satellite 2) An open standard for digital video broadcast over satellites that has improved quality over DVB-S. DVB-T (DVB-Terrestrial) A European consortium standard for the broadcast transmission of digital terrestrial television. DWDM (Dense Wavelength Division Multiplexing) An optical technology used to increase bandwidth over existing fiber-optic backbones. DWDM works by combining and trans- mitting multiple signals simultaneously at different wavelengths on the same fiber. In effect, one fiber is transformed into multiple virtual fibers. dynamic routing Routing that automatically adjusts to network topology or traffic changes. E.164 The ITU-T's international public telecommunication numbering plan for the PSTN. E (extended) link A link that provides enhanced reliability by providing a set of links from the SSP to a second STP pair. E&M signaling A signaling arrangement that uses separate paths f