Installation and first-time operationeud-1290/1.1 – R2.0 – 02.2012 95Connecting a cordless phoneConnecting 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 fourinterchangeable adapters, which means it can be used more or less worldwide. Wherenecessary, fit the standard adapter head for your country to the power supply unit. Asthe plug-in power supply unit comes in two variants, the assembly differs slightly:• Variant 1: Set the switch on the power supply unit to OPEN and slide the existingadapter head upwards and out. Next fit the new adapter head to the power supplyunit and lock it into place using the switch (LOCK).• Variant 2: First remove any adapter head that may already be fitted by pressingOPEN. Next fit the new adapter head onto the power supply unit at a slight anglewith the end marked TOP at the top. Press it down until it clicks into place.SoftwareNew device software can simply be updated during operation using automaticfirmware updates, reducing maintenance costs as a result.Note:Plug designs vary from country to country.