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Polycom OBI504 4 FXS Port Voice Adapter - New, Never used. Includes all items in box from manufacturer.Obihai OBi504vs VoIP ATA has a Gigabit Ethernet switch, 4 x FXS, 3 x USB 2.0, 1 x Gigabit Ethernet, 3 x Fast Ethernet, 1 x 3.5mm line-out audio port, 1 x 3.55mm line-in audio port, T.38 fax compliantCommunications Protocol: SIP, OBiTALKEthernet Ports: 1x 10/100/1000, 3x 10/100Phone Ports: 4x FXSAdditional Interfaces: 3x USB 2.0, 1x 3.5mm audio in, 1x 3.5mm audio outAudio Codecs: G.711μ/a, G.726, G.729a, iLBCFax Over IP: T.38Mounting: desktop, wall, 19\" rack
