Model Number: GoIP8-#4972 Brand Name: Lycnet Key Specifications/Special Features: Supports dual protocols: ITU-H.323 V4 and IETF SIP V2GSM module for making GSM callsProvide 8 SIM card ports for GSM extensionsSupports G.711 A/μ law, G.729A/B, G.723.1 codecsSupports multiple dial plans and line hunt

Supports QoS, NAT transversal and router function

Supports VAD, CNG, EC