HOT!Cross-Network Gateway ROIP-102 Convert Audio PTT Via IP Network Radio SIP V2 Support dual protocols: IETF SIP V2,PTT port Support G.711 A/ law, G.729A/B, G.723.1 Codecs,Supply dynamic DNS service Support IP voice stream to via a recording server,VAD, CNG, EC S.W Support QoS, NAT transversal and router function