+CMS ERROR:发送短信时出现 305

问题描述

我有一个系统可以在设置日程时发送短信以确认他们的预定约会，但出现错误 +CMS ERROR : 305

i have a system that can send sms when setting a schedule to confirm their scheduled appointment, but there's an error +CMS ERROR : 305

            'SMS

            query = "SELECT * FROM schedule WHERE Phone_Number ='" & txtPhoneNumber.Text & "'"
            cmd = New MySqlCommand(query, MySqlConn)
            reader = cmd.ExecuteReader
            'TIME DATE SMS
            Dim date1, time1 As String
           date1 = Val(frmViewSchedule.dtpDate.Text)
            time1 = Val(frmViewSchedule.dtpTime.Text)
            txtMessage.Text = sys_msg + "TIME: " + time1 + " DATE: " + date1

            If reader.HasRows Then
                reader.Read()
                txtPhoneNumber.Text = reader.Item("Phone_Number")


                With SerialPort1
                    .Write("at" & vbCrLf)
                    Threading.Thread.Sleep(1000)
                    .Write("at+cmgf=1" & vbCrLf)
                    Threading.Thread.Sleep(1000)
                    .Write("at+cmgs=" & Chr(34) & txtPhoneNumber.Text & Chr(34) & vbCrLf)
                    .Write(txtMessage.Text & Chr(26))
                    Threading.Thread.Sleep(1000)
                    MsgBox(rcvdata.ToString)

                End With
            End If

推荐答案

CMS ERROR 305 表示 Invalid Text Format

CMS ERROR 305 means Invalid Text Format

进入Text Mode的AT指令为AT+CMGF=1，PDU编码为AT+CMGF=0

The AT command to get in Text Mode is AT+CMGF=1 And PDU encoding is AT+CMGF=0

在Text Mode 中，发送短信时的文本编码也很重要.标准 GSM 编码为 AT+CSCS="GSM"

In Text Mode, encoding of the text when sending a SMS is important too.Standard GSM Encoding is AT+CSCS="GSM"

为了安全起见，从 AT&F(出厂默认配置)开始.您可以在会话开始时发出 AT&F 命令，以克服可能存储在调制解调器中的奇怪设置.

And to be on the safe side, start with at AT&F (Factory default configuration). You can issue an AT&F command at start of your session to overcome possible strange settings that may be stored in the modem.

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