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The choice of table for a given message is selected in the User Data Header section of an SMS message and can be specified for the whole text (a Locking shift table replacing standard GSM 7-bit default alphabet table) or a single character (Single shift table replacing the GSM 7-bit default alphabet extension table).
The non-segmented message using national language shift table(s) may carry up to 155 (or 153) 7-bit characters. GSM recognizes only two encodings for text messages and one encoding for binary messages: GSM 7-bit default alphabet (which includes using of National language shift tables as well) UCS-2; 8-bit data
The Short Message protocol itself is defined by 3GPP TS 23.040 for the Short Message Service - Point to Point (SMS-PP), [2] and 3GPP TS 23.041 for the Cell Broadcast Service (CBS). [3] Four MAP procedures are defined for the control of the Short Message Service: [1] Mobile Originated (MO) short message service transfer;
By setting the TP-Status-Report-Request (TP-SRR) bit to 1 in a SMS-SUBMIT or SMS-COMMAND, the mobile phone requests a status report to be returned by the SMSC. When the TP-SRQ has value of 1 in an SMS-STATUS-REPORT message, the message is the result of an SMS-COMMAND; otherwise it is a result of an SMS-SUBMIT.
An SMS center (SMSC) is responsible for handling the SMS operations of a wireless network. When an SMS message is sent from a mobile phone, it will first reach an SMS center. The SMS center then forwards the SMS message towards the destination. The main duty of an SMSC is to route SMS messages and regulate the process.
Cell Broadcast messaging was first demonstrated in Paris in 1997. Some mobile operators used Cell Broadcast for communicating the area code of the antenna cell to the mobile user (via channel 050), [5] for nationwide or citywide alerting, weather reports, mass messaging, location-based news, etc. Cell broadcast has been widely deployed since 2008 by major Asian, US, Canadian, South American ...
SMS Home Routing is a modification to the original GSM specifications that changed the way inbound (off-net) SMS messages are treated by mobile telecommunications networks. . Adopted by the 3GPP in 2007, Home Routing was devised to enable mobile networks to offer a full range of advanced services on both inbound and outbound SMS, giving more utility to phone users and enabling operators to ...
The SMS Forum disbanded in 2007, with this announcement: "The SMS Forum, a non-profit organization with a mission to develop, foster and promote SMS (short message service) to the benefit of the global wireless industry will disband by July 27, 2007." [4] As part of the original handover terms, SMPP ownership returned to Mavenir.