4 - 40 Chapter 4Chapter 4 - Terminals and Optional EquipmentThe APR Adapter does not support reverse-polarity.For specifications, refer to UX5000 SYSTEM SPECIFICATIONS (page 6-1).4.13.4.1 Installing the APR Adapter:1. Set the dip switches.2. Unplug the keyset completely: line cord, LAN cable, and any power adapter which may beconnected to the keyset.3. Lower the legs of the keyset if they are raised.Option CompatibilityIP Terminal Digital KeysetIP-CTS Enhanced Value Enhanced ValueNA NA NA ✔ NAAPR Dip SwitchesBit 1 Retro mode - Set to On when a UX5000 keyset with an APR adapteris used on an Aspire telephone system (then set bits 2-4). Set to Offfor a UX5000 keyset with an APR adapter is used on a UX5000system. (bits 2-4 or disregarded).Bit 2 With retro mode on, determine if the CPU controls the dB exchange(On) or if the APR Bit 3 controls it (Off).Bit 3 With retro mode on, determine if Non-0dB exchange/Hook Flash StartTime should be used (On) or of 0dB exchange/Hook Flash Start Timeis used (Off).Bit 4 With retro mode on, select the impedance: Off = 600ohm, On =ComplexBit 5 UnusedBit 6 For firmware upgrade. Normal operation has this bit On.Bit 7 UnusedBit 8 Unused
