Physical Description A-3ProtocolsExtended AT command set. Non-volatile memory. 5 preset factory, 2user defined configurations and one power-up configuration. 20stored telephone numbers. AT or V.25bis asynchronous, bisynchronousand HDLC synchronous commands are entered via the DTE interface.ASCII or EBCDIC character set used in V.25bis command mode.AutoanswerCCITT V.25 compliant.BusyBusy out via AT command or DTR.DisconnectCall cleared selectable on loss of DTR; and/or no carrier for n seconds;and/or no data for n seconds; and/or a disconnect request is receivedfrom the remote modem in error correction.Test FunctionsLocal analogue loop, local digital loop, or remote digital loop availableusing AT commands.Physical DescriptionPower16V ac, 47 to 63 Hz, 1A max. Typical power consumption 11 Watts.EnvironmentTemperature 0 to 40 degrees centigrade operating. -50 to 70 degreescentigrade storage.Relative humidity 5% to 95% non-condensing.Altitude to 3000 meters.