Control method for call having multi prefix number
KR20080071368A
A location verification server and a location verification method thereby for checking a physical address of voip terminal
KR100776171B1
System and method for distinguishing the use of telephone number based on ip network
KR100713084B1
A service method for confirmation of telephone number validity using intelligent network
KR20070056292A
System and method for providing internet service by single access network
KR20070055168A
Wireless lan system
KR100713062B1
System and method for providing electric power to ftth using power over ethernet
KR100652970B1
Multi coupler
KR20070039302A
System and method for providing multi internet service
KR20070009774A
A communication method in voip network
KR20070001353A
Oprical access network system and control method thereof linked with xdsl
KR20070000080A
Xdsl communication service system and method thereof using the advanced disposition type dslam
KR20060135187A
Home gateway using cable modem
KR20060135270A
Method of broadcasting personal using personal video recoder, and system thereof
KR20060133280A
System for providing voip service using an integrated voip equipment and method thereof
KR20060130839A
Wiretap apparatus and wiretapping method in voip network
KR20060125977A
Duplexed softswitch system and method thereof
KR20060126175A
Method of voice over internet protocol modem, and system thereof
KR20060125029A
Control method for call having multi prefix number
KR20060124174A
System for changing authorization process from central authorization server to a local dhcp server upon the authorization server's trouble and method thereof
