VNN-SIP-Fone 1.65.367 that could have been downloaded from our website for free. This free PC program can be installed on Windows XP/7/8/10/11 environment, 32-bit version. The VNN-SIP-Fone installer is commonly called Icon6F1252E2.exe or SJphone.exe etc. VNN-SIP-Fone lies within Communication Tools, more precisely Instant messaging. The actual developer of the free software is Vietnam Datacommunication Company. The following version: 1.6 was the most frequently downloaded one by the program users.
From the developer:
iFone-VNN is an Internet phone service of Vietnam Posts and Telecommunications Corporation (VNPT), developed by SIP technology (Session Initiation Protocol) which uses whole or a part of public Internet to establish calls between telephone, personal computer (PC) and other terminal equipments.
You may want to check out more software, such as Rogers Yahoo! Applications, USRobotics Cordless Skype Dual Phone or Sametime Client, which might be similar to VNN-SIP-Fone.