eud-1094/1.3 – I7.9 – 02.2010Aastra 620d 73Connecting a cordless phone■ Connecting the charging bayThe phone can be operated without modifying the charging bay.1. Plug the cable connector into the socket on the underside of the charging bay.2. Feed the cable through the strain relief provided.3. Plug the plug-in power adapter into an available socket outlet.■ Power supply / Plug-in power supply unitThe power supply unit is rated for 100 V to 240 V AC (50-60 Hz). It is supplied with four inter-changeable adapters, which means it can be used more or less worldwide. Where necessary, fitthe standard adapter head for your country to the power supply unit. As the plug-in power sup-ply unit comes in two variants, the assembly differs slightly:• Variant 1: Set the switch on the power supply unit to OPEN and slide the existing adapterhead upwards and out. Next fit the new adapter head to the power supply unit and lock itinto place using the switch (LOCK).• Variant 2: First remove any adapter head that may already be fitted by pressing OPEN. Nextfit the new adapter head onto the power supply unit at a slight angle with the end markedTOP at the top. Press it down until it clicks into place.■ SoftwareNew device software can simply be updated during operation using automatic firmwareupdates, reducing maintenance costs as a result.Note:Plug designs vary from country to country.