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 time zone offset is negative in Western hemisphere bit 3 of the last octet is set to 1. User data length, length of message. The mobile operator must take special measures to charge such messages. In time the Class 2 spdcification supported, if you choose Class 1 or Class 3 the short message is treated the same way as a Class 2 message. Other addresses are carried by lower layers. It has always 7 octets, although some of them are not used.

Insert a SIM card into the mobile phone and turn the phone on. These characters form GSM 7-bit default alphabet extension table. Ordering License information Order now. This octet is optional, see bits 4 and 3 of the first octet. They are not stored in the phone, they just displayed on the phone display. Type-of-address of the SMSC. GSM recognizes only 2 encodings for text messages and 1 encoding for binary messages:.

SMS Messaging

Longer messages can be split to multiple parts and sent as a Concatenated SMS. Retrieved from ” https: The mobile phone referred to in this document is the Ericsson GH This service enables the SM-AL to transfer short messages to its peer entity, receive short messages from its peer speification and receive reports about earlier requests for short messages to be transferred.

In the first case, the representation of time is as follows:. Follow the steps below for sending the SMS message.


In this example, the time zone, 8A is binary Gm SMS message can be deleted from memory eg. One octet includes two BCD-digit Fields. By using this site, you agree to the Specufication of Use and Privacy Policy. Default alphabet indicates that the UD User Data is coded from the 7-bit alphabet given in appendix A. Type-of-address of the sender number. Alphabet indication Unspecified message handling at the MS Default alphabet 7 bit data coding in the User Data reserved.

The value of 1 in the bit 6 of the first octet means that the message is Single-shot. Treat this as any previous element in the sequence, hex 82 represents number Bit 3 is 1, therefore the time zone is negative. Service center number in decimal semi-octets. A special DCS values also allows message compression gms, but it perhaps is not used by any operator. If the originator and the recipient home networks differ, the reply would go through another SMSC then usually.

The MSC usually does not close the connection to the mobile phone and does not end the MAP vsm with the SMSC, which allows faster delivery of subsequent messages or message segments. This behaviour was designed for older mobile phones which don’t understand UDH; such mobile phones might display the UDH as a jumble of strange characters; if the first character after UDH was Carriage Return CRthe mobile phone would rewrite the mess with the rest of the message.

The following 3 34.0 contain a relative validity period in hours, minutes and seconds as the 3rd to 5th octet of time format. Time zone is given in quarters of an hour. This format is used throughout the whole transfer of the message in the GSM mobile network. When this alphabet is used, eight characters of the message are packed in seven octets, and the message can consist of up to characters instead of characters in 8-bit data coding. Using the SMSC stored in phone is thus implicit.


However, the validity period is usually limited globally by the SMSC configuration parameter— often to 48 or 72 hours.

However, SMS message can be sent out or received in a similar fashion using other mobile phones. Message Waiting Indication group of DCS values can set or reset flags of indicating presence of unread voicemailfaxe-mail or other messages.

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

The content of the message its text when the message is not a binary one is carried in the TP-UD field. Any handset must be able to receive such short message irrespective of whether there is memory available in the U SIM or ME or not, must acknowledge receipt of the message, but must not indicate its receipt to the user and must discard its contents, so the message will not be stored in the U SIM or ME.

Its 3 least significant bits have the following meaning:. Partners Contact us Sitemap. The non-segmented message using national specificatiob shift table s may carry up to or 7-bit characters.

The TP-DCS octet has a complex syntax to allow carrying of other information; the most notable are message classes:. How to do the transformation from 7bit septets into octets is shown here. This octet is optional. Length of phone number Sender number decimal semi-octetswith a trailing F. This document describes the process of sending SMS messages between a mobile phone and the M20 Terminal. To read the SMS message, select [Read Messages] from the [Mail] menu using the left or right arrow button and the new message is usually shown first.

The absolute format is identical to the other time formats in GSM

Last modified: January 25, 2021