Aeroflex Data channel rates are typically 2.4 or 9.6 kbit/s. Thereare three standard transmission bit rates of 256, 512 and1024 kbit/s with three different interfaces over which thedata can be transported. These are shown below. Somecountries also use non-standard rates. 285X can provideall of these three interfaces, with IB5 and IB6 as options,and Bit Error Rate Testing can be carried out. However,there is no provision for framed Eurocom, nor for encryption.Encryption can normally be turned off on the EUROCOMequipment for test purposes.