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 value of 1 in the bit 6 of the first octet means that the message is Single-shot. The number itself must always start with a country code and must be formatted exactly according to the E.

Sm messages are received by a mobile phone even though it has full memory. The length of the phone number is odd 11so a trailing F has been added to form proper octets. Its 3 least significant bits have the following meaning:. 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.

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

Length of phone number Sender number decimal semi-octetswith a trailing F. The PID is the information element by which the Transport Layer either refers to the higher layer protocol being used, or indicates interworking with a certain type of telematic device.

These characters form GSM 7-bit default alphabet extension table. Views Read Edit View history. Having “02” instead of “00” here, would indicate that the TP-User-Data field psecification this message should be interpreted as 8bit rather than 7bit used in e.

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Support Knowledge base Technical support. 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 alphabet. Message Waiting Indication group of DCS values can set or reset flags of indicating presence of unread voicemailfaxe-mail or other speecification.

This page was last edited on 1 Novemberat Type-of-address of the SMSC.

The mobile phone referred to in this document is the Ericsson GH The phone number in semi octets Any handset must be able to receive such specificatioon 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.

Follow the steps below for sending the SMS message. The VP field is given in either integer or semi-octet representation. In the second case, the VP comprises 7 octets, giving the absolute time of the vality period termination. 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 smss 03 90 EF 76 19; 77 bits is 20 nibbles 14 hex which is the value of the first octet of the address.

You will then need to enter the destination number for the SMS message. In all octets the values are stored in binary coded decimal format with switched digits number 35 is stored as 53 hex. This message is coded according to the 7bit default alphabet. They are speckfication stored in the phone, they just displayed on the phone display.

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If the time zone offset is negative in Western hemisphere bit 3 of the last octet is set to 1.

SMS Messaging

One octet includes two BCD-digit Fields. These octets represent gssm message “hellohello”. The length of the phone number is odd 11therefore a trailing F has been added, as if the phone number were “F”.

The following 3 octets contain a relative validity period in hours, minutes and seconds as the 3rd to 5th octet of time format.

The alphabet contains the most-often used symbols from most Western-European languages and some Greek specificstion letters.

Although these changes are ancient version 6. The following octet is a relative validity period as described in the Relative Validity Period Values table. Other addresses are carried by lower layers. 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:.

Technical introduction to SMS messaging

On some phones this octet should be omitted! Time zone is given in quarters of an hour.

Setting the TP-RP bits turns on a feature which allows to send a reply for a message using the same path as the original message.