DSL communication apparatus with lifeline functionality suitable for transmitting and receiving voice signals during power failure
作者： Ingo Volkening , Gunther Fenzl , Jochen Kraus
DOI:
关键词:
摘要: A DSL communication apparatus with lifeline functionality is provided, the (3) in particular being suitable for CVoDSL (“Channelized Voice over Digital Subscriber Line”) transmission. The comprises a central processing unit (11) which detects local power failure state of supply (23) associated (3). In this case, changes operation from normal mode to an intermediate mode, generates interrupt stopping voice coprocessor (8), initializes download firmware FLASH memory (12) and then starts new initialization (8). Thereafter, by switching auxiliary (20) coupled transmission line (1).
lens.org 参考文章(12)
Toshihide Hiraoka, Remote power feed method and system ,(2000)
Francis I. Akers, Multiple ISDN and pots carrier system ,(1996)
Mark Bridger, Roger J. Williamson, Jonathan Beattie, Christopher N. Tate, Igor K. Czajkowski, Voice over digital subscriber line call redirection for lifeline service ,(1999)
Carl Robert Posthuma, System and method for providing lifeline power service to digital subscriber line customers ,(2001)
Gregory J. Beveridge, Method and apparatus for maintaining availability of lifeline telephony service on a hybrid fiber-coax network ,(1998)
Mark Bridger, Michael F. Grant, Roger J. Williamson, Andrew D. Wallace, Christopher N. Tate, Jeffrey G. Farrington, Lifeline telephony provision for voice over digital subscriber line ,(2000)
Francis I. Akers, Hdsl and pots carrier system ,(1997)
Mark Bridger, Andrew D Wallace, Christopher Tate, Continuity of voice carried over dsl during power failure ,(1999)
Gudmundur Jim Hjartarson, Jonathan Boocock, Mark Feeley, Andreas Weirich, Andrew Deczky, Enhanced line card and packetizing cpe for lifeline packet voice telephone ,(2000)
P. Kingston Duffie, Ramon C. W. Chea, Voice over DSL method and system for supporting a lifeline ,(2000)