Hei,
consider also, that some operators detects silent sms and restores automatically TP-PID
and TP-DCS.
Moreover changing TP-PID/TP-DCS I suggest you to use also Message Waiting
Indication-Discard option [1].
Some examples:
#pdu='0011000C91'+str(num)+'0000AA0141' # SMS Classic
#pdu='0011000C91'+str(num)+'4000AA0141' # 0x40 (TP-PID)
#pdu='0011000C91'+str(num)+'40C0AA0141' # 0x40(TP-PID) and 0xC0(Message
Waiting Indication-Discard)
Cheers,
Luca
[1]
http://mobiletidings.com/2009/07/08/voicemail-waiting-indication-sms/
On Mon, May 14, 2012 at 3:27 PM, Chengcheng Gou
<gouchengcheng(a)gmail.com> wrote:
I want to study the Slient SMS, How can it be constructed? Anyone kowns?