XT55 AT Command Set - Wireless Data Modules

XT55 AT Command Set4.7 AT+IPRs4.7 AT+IPR Set fixed local rateThe command AT+IPR can be used to set or query the TE-TA interface bit rate.SyntaxTest CommandAT+IPR=?Response(s)+IPR: (list of supported auto-detectable s) , (list of supported fixed-only s)OKRead CommandAT+IPR?Response(s)+IPR: OKWrite CommandAT+IPR=Response(s)OKERROR+CME ERRORReference(s) PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge LastV.250 ! % § § § § ! ! !Command DescriptionThe test command returns the values of the supported automatically detectable bit rates and the values of thesupported fixed bit rates.The read command returns the current bit rate of the interface.The write command specifies the bit rate to be used for the interface. When you set a fixed-rate, make sure thatboth TE (DTE) and TA (DCE) are configured to the same rate. When you select autobauding, the TA will automaticallyrecognize the bit rate currently used by the TE.The setting is stored in the non-volatile memory and will be used whenever the engine is powered up again. However,in case of autobaud mode (AT+IPR=0) the detected TA bit rate will not be saved and, therefore, needs tobe resynchronized after restarting the GSM engine (see Section 4.7.1, Autobauding).Parameter Description (num)(&V)bit rate per second (bps)0 Activates autobauding. Not supported on ASC1. See Section 4.7.1, Autobaudingfor further details.3006001200240048009600XT55_ATC_V03.03 Page 90 of 459 9/9/05Confidential / Released