"Grandstream GRP2612 - IP Phone - Nero - Cornetta cablata - In-band - Out-of band - Info SIP - 4 line"
Grandstream GRP2612 - IP Phone - Nero - Cornetta cablata - In-band - Out-of band - Info SIP - 4 linee - 2000 voci - Telefono voip - Voice over ip - SIP - TCP/IP - VOIP - Power over Ethernet - Clip - Regolatore di volume - CE - FCC