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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If the originator and the recipient gs, networks differ, the reply would go through another SMSC then usually. GSM recognizes only 2 encodings for text messages and 1 encoding for binary messages:. When there is a new SMS message arrived, the phone will beep and the SMS message indicator gwm appear on the phone screen. 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.

Messages sent via this encoding can be encoded in the default GSM 7- bit alphabet, the 8-bit data alphabet, and the bit UCS-2 specofication. To read a SMS message from a particular location in memory eg. A special DCS values also allows message compressionbut it perhaps is not used by any operator.

SMS messages and the PDU format

Length of phone number Zms of the sender number. However, no such extensions are defined. In Class 0 immediate display the short message is written directly in the display, as the M20 Terminal has no display the Class 0 message can be realised only in a roundabout way.


The non-segmented message using national language shift table s may carry up to or 7-bit characters. Versenden von Kurznachrichten mittels PDU.

This document describes the process of sending SMS messages between a mobile phone and the M20 Terminal. The same was also true for other languages specjfication non-Latin scripts like Russian, Arabic, Hebrew and various Indian languages.

The SMS message can be deleted from memory eg. If the time zone offset is negative in Western hemisphere bit 3 of the last octet is set to 1.

Sender number decimal semi-octetswith a trailing F. Message Waiting Indication group of DCS values can set or reset flags of indicating presence of unread voicemailfaxe-mail or other messages.

This format is used throughout the whole transfer of the message in the GSM gms network. Longer messages can be split to multiple parts and sent as a Concatenated SMS. The phone is now ready for sending and receiving SMS.

Type-of-address of the SMSC. In the first case, the representation of time is as follows:. Having “02” instead of “00” here, would indicate that the TP-User-Data field of this message should be interpreted as 8bit rather than 7bit used in e. The absolute format is identical to the other time formats in GSM The content of the message its text when the message is not a binary one is carried in the TP-UD field.

SMS Messaging

This octet is optional, see bits 4 and 3 of the first octet. Other addresses are carried by lower layers.

The TP-DCS octet has a complex syntax to allow carrying of other information; the most notable are message classes:. Using the unknown format i.


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

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. The octet is used according to a coding group which is indicated in bits They are not stored in the phone, they just displayed on the phone sspecification.

One octet includes two BCD-digit Fields. When this alphabet is used, eight characters of the gssm are packed in seven octets, and the message can consist of up to characters instead of characters in 8-bit data coding. Treat this as any previous element in the sequence, hex 82 represents number The mobile phone referred to in this document is the Ericsson GH This octet is optional. The octet is then coded as follows:. To read the SMS message, select [Read Messages] from the [Mail] menu using the left or right arrow button and specifictaion new message is usually shown first.

The MR field gives an integer Using the SMSC stored in phone is thus implicit. Default alphabet indicates that the UD User Data is coded from the 7-bit alphabet given in appendix A. However, a GSM The phone number in semi octets Message “hellohello”8-bit octets representing 7-bit data.