protected DeviceDescriptionInformationBlock(byte[] bytes) : base(bytes)
        {
            if (Type != DescriptionType.DeviceInfo)
            {
                throw new KnxNetIpException("Unable to determine Device Description. Wrong Description Type!");
            }

            Medium           = (KnxMedium)Information[0];
            Status           = Information[1];
            Address          = new KnxDeviceAddress(Information.ExtractBytes(2, 2));
            ProjectInstallId = (Information[4] << 8) + Information[5];
            SerialNumber     = new DptString_8859_1(Information.ExtractBytes(6, 6)).Value;
            MacAddress       = Information.ExtractBytes(12, 10);
            FriendlyName     = Resources.Strings.UnknownDevice;

            if (Information.Length > 22)
            {
                var name = new DptString_8859_1(Information.ExtractBytes(22)).Value;
                if (name.IndexOf('\0') >= 0)
                {
                    name = name.Substring(0, name.IndexOf('\0'));
                }
                FriendlyName = name;
            }
        }
        public void DptString8859_1Test()
        {
            var dpt1 = new DptString_8859_1("KNX is OK");
            var dpt2 = new DptString_8859_1(dpt1.Payload);

            Assert.AreEqual("KNX is OK", dpt2.Value);

            Assert.AreEqual(0x4B, dpt2.Payload[0]);
            Assert.AreEqual(0x4E, dpt2.Payload[1]);
            Assert.AreEqual(0x58, dpt2.Payload[2]);
            Assert.AreEqual(0x20, dpt2.Payload[3]);
            Assert.AreEqual(0x69, dpt2.Payload[4]);
            Assert.AreEqual(0x73, dpt2.Payload[5]);
            Assert.AreEqual(0x20, dpt2.Payload[6]);
            Assert.AreEqual(0x4F, dpt2.Payload[7]);
            Assert.AreEqual(0x4B, dpt2.Payload[8]);
            Assert.AreEqual(0x00, dpt2.Payload[9]);
            Assert.AreEqual(0x00, dpt2.Payload[10]);
            Assert.AreEqual(0x00, dpt2.Payload[11]);
            Assert.AreEqual(0x00, dpt2.Payload[12]);
            Assert.AreEqual(0x00, dpt2.Payload[13]);
        }