2012.12.07
Overview
The present invention relates to a communication network system, a calling terminal and a voice call establishing method thereof. More particularly, the communication network system of the present invention comprises a called terminal, a calling terminal and an SIP (Session Initiation Protocol) server. The calling terminal transmits an invite message, which includes IPv4 (Internet Protocol version 4) connection information and IPv6 (Internet Protocol version 6) connection information of the calling terminal, to the called terminal via the SIP message so that the called terminal establishes a voice call with the calling terminal according to one of the IPv4 connection information and the IPv6 connection information of the calling terminal.Category
發明
Patented
101146042
發明第I531206號
Filing Date
2012.12.07Expired Date
2032.12.06Notification
2017.04.14