227781 ⎘
Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks where PSTN/ISDN interconnects two networks other than PSTN/ISDN
High availability voice over internet protocol telephony
#2APPARATUS FOR CALL MANAGEMENT AND METHOD THEREOF
#3Generic multichannel center for network applications and services
#4POTS extender for voice fallback in a subscriber line
#5Impairment reduction for tandem VoIP calls
#6Method, system and apparatus for providing endpoint-to-endpoint transcoding free connection
#7Fax relay tunneling
#8Video flow control and non-standard capability exchange for an H.320 call leg
#9POTS Extender for Voice Fallback in a Subscriber Line
#10POTS extender for voice fallback in a subscriber line
#11Multimedia video telephony
#12Advanced conference call controls