Aastra OpenCom 130 User Guide - Page 67
Connecting the Key Extension, CAUTION, Please note, Never, Configuration, Needs Power Supply Unit
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Aastra 677x: Extensions and Accessories Key Extensions Configuration Needs Power Supply Unit Upn system telephone No Upn system telephone with 1-3 key extensions Yes IP system telephone Yes IP system telephone with 1-3 key extensions Yes IP system telephone with PoE (Power over No Ethernet) IP system telephone with 1-3 key extensions No and PoE A system telephone requires a power supply unit if a key extension is installed. When using PoE, an IP system telephone requires no power supply unit. Connecting the Key Extension CAUTION! Guard against static charges! Static charges can damage the OpenCom 100's electronic components. Make sure you discharge yourself and your tools before and during any installation work on the OpenCom 100 and any connected terminals. Use discharging underlays or antistatic mats where possible. Please note: Never attach a key extension to a system telephone that is already connected to OpenCom 100. Pull the telephone plug out of the socket before screwing the key extension onto it. 65