Hi,
During my development of NBIOT modem, I am able to establish a stable UDP communication using BC95G. Since this device supports TCP protocol, we tried a sequence of AT command: and we were not able to deliver the TCP packet to the server although it respond to ping request. and the tcp connection command resturns OK. At server side: the TCP connection request is not reaching. are what we doing correct? what could be the reason of the TCP connection failure?
<<<: AT+CGMM\r\n
>>>: \r\nBC95GJB-02-STD\r\n\r\nOK\r\n
<<<: AT+CFUN=1\r\n
>>>: \r\nOK\r\n
<<<: AT+CGDCONT=1,"IP","enjizmosos"\r\n
>>>: \r\nOK\r\n
<<<: AT+CGATT=1\r\n
>>>: \r\nOK\r\n
<<<: AT+CGATT?\r\n
>>>: \r\n+CGATT:1\r\n\r\nOK\r\n
<<<: AT+CGPADDR\r\n
>>>: \r\n+CGPADDR:0,10.122.134.240\r\n+CGPADDR:1\r\nOK\r\n
<<<: AT+CGMR\r\n
>>>: \r\nSSB,V150R100C10B200SP1\r\n\r\nSECURITY_A,V150R100C20B300SP2\r\n\r\nPROTOCOL_A,V150R100C20B300SP2\r\n\r\nAPPLICATION_A,V150R100C20B300SP2\r\n\r\nSECURITY_B,V150R100C20B300SP2\r\n\r\nRADIO,Hi2115_RF0\r\n\r\nOK\r\n
<<<: AT+NBAND?\r\n
>>>: \r\n+NBAND:28,5,20,8,3,1\r\n\r\nOK\r\n
<<<: AT+CSQ\r\n
>>>: \r\n+CSQ:13,99\r\n\r\nOK\r\n
<<<: AT+NSOCR=STREAM,6,1024,1\r\n
>>>: \r\n1\r\n\r\nOK\r\n
<<<: AT+NPING=10.245.65.78\r\n
>>>: \r\nOK\r\n
>>>: \r\n+CSCON:1\r\n\r\n+NPING:10.245.65.78,124,420\r\n
<<<: AT+NSOCR=STREAM,6,0,1\r\n
>>>: \r\n2\r\n\r\nOK\r\n
<<<: AT+NSOCO=2,10.245.65.78,32010\r\n
>>>: \r\nOK\r\n
<<<: AT+NSOSD=2,4,4D324D3E,0x000,2\r\n
>>>: \r\n2,4\r\n\r\nOK\r\n
>>>: \r\n+NSOSTR:2,2,0\r\n\r\n+NSOCLI: 2\r\n
>>>: \r\n+CSCON:0\r\n
Best regards.