OKY3055 is a multi-channel server telecom platform that registers up to 3055 DID lines using GSM, PSTN, and VoIP interfaces. The unit is capable of connecting to SIP trunks, wireless and VoIP networks, as well as traditional PSTN lines and GSM networks. It supports multiple signaling protocol and codec, including H.323, SIP, G.711, G729, and GSM. Additionally, it provides vital features such as time schedules, call forwarding, auto redialing, caller ID, call parking, three-way conferencing, voicemail, and call recording.