Smart Messaging
Encyclopedia
Smart messaging is a proprietary
service developed by Nokia
used for the sending and receiving of various digital media
via SMS
.
Nokia handsets allow the picture message to act as a screensaver. Most colour ones do not.
The picture message uses an implementation of the OTA bitmap
.
Operator Logos sit in the middle of the screen and disappear when coverage is lost. The original intent of Operator Logos was to allow a Network Operator or MVNO to replace the name of their network (as stored on the SIM card with their graphical logo, but human nature being what it is, people now usually get one that represents them rather than their network.
There is a workaround that allows a standard size Operator Logo to be sent as a single message, however, compatibility with newer or non-Nokia phones is uncertain. A more accurate way of reducing the cost of sending Operator Logos is to reduce their size to 72x13 pixels. This size would be sent as a single message.
The Operator Logo uses an implementation of the OTA bitmap
.
A CLI Icon is a picture that will display on the handset when a call is received from someone whose number is stored in the handset as part of the corresponding 'group' (eg friends, colleagues, clients, etc.). The CLI Icon uses an implementation of the OTA bitmap
.
After this there are one or more 'Information Elements', these tell the phone what to do with the information when it receives it. The two most common Information Elements are for Port Number Addressing (code 05) and concatenation
(code 00) (telling the phone how to put together two or more SMS messages to make a single message).
The first byte of the Information Element Identifies (IEI) what information is to follow. The second byte of the Information Element is the 'Information Element Data Length' or IEDL. It tells the phone how many of the following bytes are part of the Information Identifier. The third and subsequent bytes of the Information Element are the actual information being conveyed. This is called the IED or Information Element Data.
A valid example of a Smart Message Header, expressed in hex is 0B0504158200000003010201.
This means:
0B 0B is hex for 11. There are 11 more bytes to follow.
05 This is the code for port addressing.
04 The next 4 bytes of data belong to this Information Element
15 82 Send it to Port 1582 (in other words, it is an Operator Logo)
00 00 It was sent from Port 0000. This is not relevant for most Smart Message types, but must be included nonetheless
00 This is the code for Concatenation. This content is being sent as multiple SMS messages
03 Three more bytes of information belong to this Information Element.
01 Message Reference No. If two or more items are being sent, giving them different reference numbers makes sure the phone knows which SMS messages belong to which Smart Message.
02 Overall, there are two messages.
01 This is the first message in the sequence.
, and sometimes other information such as the mobile country code and Mobile Network Code
. For ringtones, it contains the music etc.
Proprietary software
Proprietary software is computer software licensed under exclusive legal right of the copyright holder. The licensee is given the right to use the software under certain conditions, while restricted from other uses, such as modification, further distribution, or reverse engineering.Complementary...
service developed by Nokia
Nokia
Nokia Corporation is a Finnish multinational communications corporation that is headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki...
used for the sending and receiving of various digital media
Digital media
Digital media is a form of electronic media where data is stored in digital form. It can refer to the technical aspect of storage and transmission Digital media is a form of electronic media where data is stored in digital (as opposed to analog) form. It can refer to the technical aspect of...
via SMS
SMS
SMS is a form of text messaging communication on phones and mobile phones. The terms SMS or sms may also refer to:- Computer hardware :...
.
Picture message
A monchrome picture that can be sent between handsets as a series of SMS messages. The typical size of a picture message is 72x28 pixels, which is sent as three separate SMS messages. Most MonochromeMonochrome
Monochrome describes paintings, drawings, design, or photographs in one color or shades of one color. A monochromatic object or image has colors in shades of limited colors or hues. Images using only shades of grey are called grayscale or black-and-white...
Nokia handsets allow the picture message to act as a screensaver. Most colour ones do not.
The picture message uses an implementation of the OTA bitmap
OTA Bitmap
-Introduction:The OTA or Over The Air Bitmap was defined by Nokia Corporation as part of their Smart Messaging Specification, to send pictures as a series of one or more concatenated SMS text messages. The format has a maximum size of 255x255 pixels. It is very rare for an OTA bitmap to measure...
.
Operator logo
A monchrome picture that can be sent to a handset via an SMS Gateway as either a single or a series of concatenated SMS messages. The typical size of an Operator Logo is 72x14 pixels, which is sent as two separate SMS messages.Operator Logos sit in the middle of the screen and disappear when coverage is lost. The original intent of Operator Logos was to allow a Network Operator or MVNO to replace the name of their network (as stored on the SIM card with their graphical logo, but human nature being what it is, people now usually get one that represents them rather than their network.
There is a workaround that allows a standard size Operator Logo to be sent as a single message, however, compatibility with newer or non-Nokia phones is uncertain. A more accurate way of reducing the cost of sending Operator Logos is to reduce their size to 72x13 pixels. This size would be sent as a single message.
The Operator Logo uses an implementation of the OTA bitmap
OTA Bitmap
-Introduction:The OTA or Over The Air Bitmap was defined by Nokia Corporation as part of their Smart Messaging Specification, to send pictures as a series of one or more concatenated SMS text messages. The format has a maximum size of 255x255 pixels. It is very rare for an OTA bitmap to measure...
.
CLI icon / Group logo
A monochrome picture that can be sent to a handset via an SMS Gateway as either a single or a series of concatenated SMS messages. The typical size of a picture message is 72x14 pixels, which is sent as a single separate SMS message.A CLI Icon is a picture that will display on the handset when a call is received from someone whose number is stored in the handset as part of the corresponding 'group' (eg friends, colleagues, clients, etc.). The CLI Icon uses an implementation of the OTA bitmap
OTA Bitmap
-Introduction:The OTA or Over The Air Bitmap was defined by Nokia Corporation as part of their Smart Messaging Specification, to send pictures as a series of one or more concatenated SMS text messages. The format has a maximum size of 255x255 pixels. It is very rare for an OTA bitmap to measure...
.
Internal structure
The content of each smart message sent is divided into two parts. The data header and the data content.Data header
The Data header is again divided into two parts, the first part is exceptionally small, only one byte in length, and defines the total length of the header.After this there are one or more 'Information Elements', these tell the phone what to do with the information when it receives it. The two most common Information Elements are for Port Number Addressing (code 05) and concatenation
Concatenation
In computer programming, string concatenation is the operation of joining two character strings end-to-end. For example, the strings "snow" and "ball" may be concatenated to give "snowball"...
(code 00) (telling the phone how to put together two or more SMS messages to make a single message).
The first byte of the Information Element Identifies (IEI) what information is to follow. The second byte of the Information Element is the 'Information Element Data Length' or IEDL. It tells the phone how many of the following bytes are part of the Information Identifier. The third and subsequent bytes of the Information Element are the actual information being conveyed. This is called the IED or Information Element Data.
A valid example of a Smart Message Header, expressed in hex is 0B0504158200000003010201.
This means:
0B 0B is hex for 11. There are 11 more bytes to follow.
05 This is the code for port addressing.
04 The next 4 bytes of data belong to this Information Element
15 82 Send it to Port 1582 (in other words, it is an Operator Logo)
00 00 It was sent from Port 0000. This is not relevant for most Smart Message types, but must be included nonetheless
00 This is the code for Concatenation. This content is being sent as multiple SMS messages
03 Three more bytes of information belong to this Information Element.
01 Message Reference No. If two or more items are being sent, giving them different reference numbers makes sure the phone knows which SMS messages belong to which Smart Message.
02 Overall, there are two messages.
01 This is the first message in the sequence.
Data content
The data content varies depending on the type of smart message. With graphical types, it contains the OTA bitmapOTA Bitmap
-Introduction:The OTA or Over The Air Bitmap was defined by Nokia Corporation as part of their Smart Messaging Specification, to send pictures as a series of one or more concatenated SMS text messages. The format has a maximum size of 255x255 pixels. It is very rare for an OTA bitmap to measure...
, and sometimes other information such as the mobile country code and Mobile Network Code
Mobile Network Code
A Mobile Network Code is used in combination with a Mobile Country Code to uniquely identify a mobile phone operator/carrier using the GSM/LTE, CDMA, iDEN, TETRA and UMTS public land mobile networks and some satellite mobile networks...
. For ringtones, it contains the music etc.
External links
- Forum Nokia - Official Nokia Developer Website
- Comprehensive listing of free email to SMS gateways