231549 ⎘
Indexing scheme relating to selecting arrangements in general and for multiplex systems Change of provider, e.g. network or service
TELECOMMUNICATION PARAMETER CHANGE NOTIFICATION SYSTEM AND METHOD
#2Method to provide an operator selection service as well as a communications network and a call server therefore
#3Automatic telephone line switch
#4Cutover method and device for telephone lines
#5Arrangement and a method in a switched telecommunication system