2N SIP Speaker Installation v2.1 - Manual (Page 29)

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2N TELEKOMUNIKACE a.s., www.2n.cz
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Signal-to-noise ratio: 91 dB
Headset/Line output: 3,5 mm jack on front panel
Microphone input: Standard electret microphone, Max. Vpp = 1V, Rin = 50 kΩ,
Vbias = 1,525 V
Digital output: 24 V / 1 A AC/DC passive output relay, galvanically isolated
Digital input: Only external contact needed
Audiocodecs: G.711 (PCMA, PCMU), G.729 (Annex A, B), L16