2 SIP accounts / 10Base-T/100Base-TX (PoE compatible); Codec: G.722, G.711a-law, G.711μ-law, G.729a / 2.3 type monochrome LCD / Equipped with 2 flexible function keys; Adapter not included, PoE compatible. Poe-compatible hubs can be used without an AC adapter. AC adapter sold separately.