GSM 3.40 SMS SPECIFICATION PDF

6) for GSM TS – Technical realization of the Short Message Service (SMS ) or the SGSN is described in TS , and is dealt with in that specification. PID, Protocol Identifier, Parameter showing the SMSC how to process the SM (as FAX, Voice etc) . (For further information see GSM chapter ). TP-PID: TP-Protocol-Identifier. . This document gives only a very simple description of SMS in PDU mode. . See GSM TP-PID complete definition. 1 0.

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The MSC usually does not close the connection to the mobile phone and does not end the MAP dialogue with the SMSC, which allows faster delivery of subsequent messages or message segments. It has always 7 octets, although some of them are not used. One octet includes two BCD-digit Fields.

Bit 3 is 1, therefore the time zone is negative. You will then need to enter the destination number for the SMS specifiaction.

GSM – Wikipedia

In this case the number must adhere to the mobile operator’s dial planwhich means that international numbers must have the international prefix 00 in most countries, but in the USA before the country code and numbers for long-distance calls must start with the trunk prefix 0 speclfication most countries, 1 in the USA followed by a trunk code.

A special DCS values also allows message compressionbut it perhaps is not used by any operator.

Support Knowledge base Technical support. The same was also true for other languages using non-Latin scripts like Russian, Arabic, Hebrew and various Indian languages.

SMS Messaging

For example, a fictional alphanumeric address Design Home is converted to the GSM 7-bit default alphabet which yields 11 bytes 44 65 73 69 67 6E 00 48 6F 6D 65 hexthe 7-bit packing transforms it to 77 bits stored in 10 octets as C4 F2 3C 7D 76 03 90 EF 76 19; 77 bits is 20 nibbles 14 hex which is the value of the first octet of the address. The remaining number bit-wise ‘and’ with ishexadecimal They are not stored in the phone, they just displayed on the phone display.

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TP-PID Protocol identifier either refers to the higher layer protocol being used, indicates interworking with a certain type specificatoin telematic device like faxtelex specifocation, pagerteletexe-mailspecifies replace specificztion of the message or allows download of configuration parameters to the SIM card.

The SMS message can be deleted from memory eg. Gm of the sender number. In all octets the values are stored in binary coded decimal format with switched digits number 35 is stored as 53 hex. GSM recognizes only 2 encodings for text messages and 1 encoding for binary messages:.

GSM TS (1 of 6) – SMS: Short Message Service

Using the SMSC stored in phone is thus implicit. Such message may be sent only if the original message had this flag cleared and the new message must be sent with the flag set. Flash messages are received by a mobile phone even though it has full memory. Insert a SIM card into the mobile phone and turn the phone on. In time the Class 2 is supported, if you choose Class 1 or Class 3 the short message is treated the same way as a Class 2 message. Length of phone number This octet is optional, see bits 4 and 3 of the first octet.

Sender number decimal semi-octetswith a trailing F. The TP-DCS octet has a complex syntax to allow carrying of other information; the most notable are message classes:. In the second case, the VP comprises 7 octets, giving the absolute time of the vality period termination. However, the validity period is usually limited globally by the SMSC configuration parameter— often to 48 or 72 hours.

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Longer messages can be split to multiple parts specificatioh sent as a Concatenated SMS. The phone number in semi octets Default alphabet indicates that the UD User Data is coded from the 7-bit alphabet given in appendix Specificagion.

How to do the transformation from 7bit septets into octets is shown here. By using this site, you agree to the Terms of Use and Privacy Policy. The fields of SM-TP messages, including their order and size, are summarized in the following table, where M means a mandatory field, O an optional field, E is used for fields which are mandatory in negative responses RP-ERR and not present in positive responses RP-ACKx is a field present elsewhere:.

The alphabet contains the most-often used symbols from most Western-European languages and some Greek uppercase letters. The following 3 octets contain a relative validity period in hours, minutes and seconds as the 3rd to 5th octet of time format. When the message encoding is GSM 7-bit default alphabet and a UDH is present, fill bits are inserted to align start of the first character of the text after UDH with septet boundary.

The content of the message its text when the message is not a binary one is carried in the TP-UD field.

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