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Questions tagged [pdu]

Protocol Data Unit. Also know as Concatenated SMS, it is a way to extend SMS messages beyond the usual 160 character data limit.

In the cellular phone industry, mobile phones and their networks sometimes support concatenated short message service (or concatenated SMS) to overcome the limitation on the number of characters that can be sent in a single SMS text message transmission (which is usually 160). Using this method, long messages are split into smaller messages by the sending device and recombined at the receiving end. Each message is then billed separately. When the feature works properly, it is nearly transparent to the user, appearing as a single long text message.

http://en.wikipedia.org/wiki/Concatenated_SMS

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Why use reverse nibbled ​in decimal-octets in SMS PDUs?

I am studying for SMS PDU. However, I do not know why the SMS PDU transmits the phone number and the like by reverse nibbled. (012345 to 103254) Why does it work like this?
김어진
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How to send SMS with more then 70 characters

My code working perfectly if the SMS messages to be sent has less than 70 characters. I want to send messages with between 70 to 200 characters per message. using GsmComm.GsmCommunication; using GsmComm.PduConverter; using GsmComm.Server; using…
Fahad Khan
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PDU and UCS2 in java ussd

I use SIM-900 in my device. I need to get a balance from sim card. I use this command and get this result. Command Modem: AT+CUSD=1,"*555*1*2#" result: +CUSD:…
Rasoul Miri
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How to restore a long SMS (Text) message from multiple short text messages stored in Android database?

I have a ContentObserver listening content://sms/inbox. When I send long SMS message from one Android emulator to another Android emulator, this ContentObserver fires multiply (depending on the number of short sms messages in the long sms message).…
isabsent
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Looking for GSM 7bit encode/decode algorithm

I need to Send Short message in pdu mode. Anybody can give me a GSM 7bit encode/decode algorithm?
Leo
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Qt and GSM encoding

Hi i am developping an open source sms application and i am using Qt. But now i have various problem with the encodings. I am using this library for various pdu encoding and decoding https://sourceforge.net/projects/pdulib/ In gsm there 3 main…
M-Jeff
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Why is it error when I use the "at command "in the C#, but does the command work properly in the hyper terminal?

this is my code in c# : string pdu=SubmitPdu.GetPdu("destNumber","Message","ServiceNumber"); SerialPort comport = new SerialPort(); comport.PortName = "com21"; comport.BaudRate = 921600; comport.Parity = Parity.None; comport.StopBits =…
mohamadMahmodi
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Send Concatinated SMS message using EasySMPP API (How to Add UDH Info)

i am using c# API called EasySMPP, it is pretty great in sending single SMS, it is also good in send large SMS, but the recipient get the messages separately, which is not meaningful, what i am looking is how to modify the PDU so that i can append…
henoke molla
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Gsm PDU to Text decoding Algorithm not working in stm32

I have written a PDU to Text decoding algorithm in C which compiles and runs perfectly with dev C or code blocks for more than one messages(where i provide the PDU messages manually). Now i have applied the same algorithm to stm32f103rc connected…
Devjeet Mandal
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PDU Response Parameters

I'm creating a SMPP server using Node.js. It's all okay, but now, I have to send to client a custom parameter inside pdu.response(), like 'message_id'. If I do: session.send(pdu.response({comand_status: 999})); It works, but if I do…
Heitor Caldeira
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Determining if SMS is binary or text

I have a default SMS messenger Android app that will receive binary and plain text messages. I need to determine if the received SMS is in binary or text to know how to send a message back to the original sender. On 5.1 I can check the MessageBody…
DarthVadar123451
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Decode PDU encoded SMS in PHP

I've searched the web for quite a while now - but nothing usable passed my way :( Do you know a class/library to decode PDU encoded SMS using PHP? Doing all the decode by hand using the official documentation scares me a bit. There seem to be…
glutorange
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how to send arabic sms with at-command in text mode (not pdu)

Is it possible to send arabic sms with at-command in text mode (not pdu) and get a delivery report?
mahdi
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Unrelated packets in TCP communication capturing results

I am using Wireshark to capture TCP communication packets in my experiment (using Mininet Simulation). The experiment involves a client (10.0.0.2) who requests HTTP page from the server (10.0.0.1). The following screenshot shows the capturing number…
Frank
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How to Encode a string to PDU using GSMComm

C# 6.0 Huawei modems use PDU for USSD, I need a c# code or any library to Encode plain text to PDU and decode PDU to plain text ex: *222# ==> 2A994C3602 and vice versa. Thanks.
user1104916
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