We have the codec conversion Solution for sale, it can support the conversion between g711, g723, and g729 codec. It can be installed in the softswitch server, and realize the conversion without influencing the quality of the calls. Any serious person who wants to own a voip business solution with good service is welcome. Contact: MSN: snipped-for-privacy@ez2telecom.com Email: snipped-for-privacy@ez2telecom.com