This SIP-GSM Gateway System is built up by two independent devices: one is KTA2110（O）, which is a 1Lan,1Wan,1FXO,1PSTN adapter produced by Koncept, and the other is any GSM gateway provided by a third party manufacturer.

 

This system provides GSM access，send dial and call transfer between GSM and VOIP.

Features of Application:

A. Free call for GSM Group telecommunication and VOIP communication.

B. Wireless VOIP application based on GSM.