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Mobile message type specification - Operator logo SMS, binary
(SMS message type, SMS message format)

Introduction

Operator logos are graphical images that are displayed on a phone when the phone signs into a GSM network. An operator logo is identified by a country code and a mobile network code. GSM handsets supporting this technology can store more than one image at a time, and when the handset roams between networks, it can display the appropriate operator logo.

An operator logo is an OTA bitmap. The OTA bitmap is a black and white picture with a gray scale level of 1 to 255. The OTA bitmap has a header and a body. The header has a predefined width and a height field specifying how the stream of bits in the body should be broken into lines.

When designing operator logos, the designer has to keep in mind that different handsets support operator logos of different dimensions. The most common bitmap size for operator logos is 72x14 pixels. Other ota picture messages can have a dimension of 72x28 pixels.

Support for operator logos in Ozeki NG - SMS Gateway

To build an operator logo, you have to encode it in a binary format. This format contains a header and a body. The header specifies the operator logo version number, the Mobile Country Code (MCC) and the Mobile Network Code (MNC) fields in addition to the dimensions and the color depth of the bitmap. The body holds the OTA bitmap.

Example:

3 0 2 1 F 3 5 4 0 A 0 0 4 8 0 E 0 1 F F F F F F F F F F F F F F F F F F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 F F F F F F F F F F F F F F F F F F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 F 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

Interpretation:

30 Operator logo version number. ISO-8859-1 character "0"
21 F3 Mobile Country Code (MCC), octets 14 and15, little-endian BCD, filled with F16,123 -> 21 F3
54 Mobile Network Code (MNC) coding, little-endian BCD, filled with F16, 45 -> 54
0A  ISO-8859-1 "Line feed" character
00 InfoField
48  The width of the bitmap. Hex 48 -> 72 decimal
0E  The height of the bitmap. Hex 0E -> 14 decimal
01 The depth of the bitmap (number of gray scales)
FFFFFFFFFFFFFFFF
FF00000000000000
0000FFFFFFFFFFFF
FFFFFF0000000000
0000000010F00000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
000000000001
 OTA bitmap data

Sending an operator logo in SMS

To send an operator logo message with Ozeki NG - SMS Gateway, you need to specify a message type which tells the software that the following message is an operator logo. To send the above example, you would use the following message type:

SMS:OPLOGO

In this case, the message type is made up of two sections. The first section tells the message server that this is an SMS message. This way only the service provider connections supporting this type of SMS will be considered to deliver the message. The second section is used by the service provider to use the operator logo encoder. This encoder will create the protocol data unit (PDU) that will be sent as an SMS message.

Example:

If you use the Database user to send and receive SMS messages with Ozeki NG - SMS Gateway, you can use the following SQL statement to send an Operator Logo message:

insert into ozekimessageout (receiver,msgtype,msg,status) values
('+36205222245','SMS:OPLOGO', '3021F3540A00480E01FF...001','send');





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