Computer Interface to Message Distribution (CIMD) is a proprietary
short message service centre
A Short Message Service Center (SMSC) is a network element in the mobile telephone network. Its purpose is to store, forward, convert and deliver Short Message Service (SMS) messages.
The full designation of an SMSC according to 3GPP is ''Sh ...
protocol
Protocol may refer to:
Sociology and politics
* Protocol (politics), a formal agreement between nation states
* Protocol (diplomacy), the etiquette of diplomacy and affairs of state
* Etiquette, a code of personal behavior
Science and technolog ...
developed by
Nokia
Nokia Corporation (natively Nokia Oyj, referred to as Nokia) is a Finnish multinational corporation, multinational telecommunications industry, telecommunications, technology company, information technology, and consumer electronics corporatio ...
for their
SMSC (now:
Nokia Networks
Nokia Networks (formerly Nokia Solutions and Networks (NSN) and Nokia Siemens Networks (NSN)) is a multinational data networking and telecommunications equipment company headquartered in Espoo, Finland, and wholly owned subsidiary of Nokia Co ...
).
Syntax
An example CIMD exchange looks like the following:
03:007021:12345678033:hello
53:007021:12345678060:971107131212
Each packet starts with STX (hex 02) and ends with ETX (hex 03). The content of the packet consists of fields separated by TAB (hex 09). Each field, in turn, consists of a ''parameter type'', a colon (:), and the ''parameter value''. Note that the last field must also be terminated with a TAB before the ETX.
Two-digit parameter types are ''operation codes'' and each message must have exactly one. The number after the operation code is the ''sequence number'' used to match an operation to its response. The response code ( acknowledgement) of the message is equal to the operation code plus 50.
In the example above, the operation code 03 means submit message. Field 021 defines the destination address (telephone number
A telephone number is a sequence of digits assigned to a landline telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices f ...
), with field 033 is the user data (content) of the message. Response code 53 with a field 060 time stamp indicates that the message was accepted; if the message failed, the SMSC would reply with field 900 (error code) instead.
A good amount of supporting software to implement CIMD is available from
Nokia's Website to build CIMD client. You can fire SMS from message center with the help of CIMD client tools.
See also
* Universal Computer Protocol/External Machine Interface (UCP/EMI)
* Short message peer-to-peer protocol (SMPP)
External links
Nokia: CIMD specification for SC v7.0
Nokia: CIMD specification for SC v8.0
{Dead link, date=November 2018 , bot=InternetArchiveBot , fix-attempted=yes
Software
Kannel
Open-Source WAP and SMS Gateway with CIMD 1.3 and CIMD 2.0 support.
Ixonos MISP CIMD simulator
Open-Source CIMD v2 compliant server for testing CIMD client applications
GSM standard
Mobile technology
Network protocols