I want to know exactly how to send at commands to 5110 without using nokia softwares.Is it necessary to send at commands through virtual serial port?
I gave the string 1e 00 0c ....... by packing ,forming pdu ,calculating the crc & observed the responses from the handset.I got the response string containing 7f & also the data frame containing the smsc number.
My aim is to send sms ,receive it , decode it .
Where will i get the pdu protocol for 5110, its responses & the detailed meanings of the pdu responses ?
'if you are a chinese you may use this
'it's work in Windows NT 2000 Xp or later
'becase of ASCW() function must be supported by Unicode
Public Function HanZhiToPDU(strSource As String) As String
Dim iLen As Integer '字符串长度
Dim sTmp As String ' 临时变量
Dim iLoop As Integer '裚环变量
Dim sT As String