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Version 5.6.2.p3, 2014-07-31
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Transport of CoAP over SMS

Document type: Expired Internet-Draft (individual)
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Last updated: 2014-02-09 (latest revision 2013-08-08)
Intended RFC status: Unknown
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IESG State: Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


Short Message Service (SMS) of mobile cellular networks is frequently used in Machine-To-Machine (M2M) communications, such as for telematic devices. The service offers small packet sizes and high delays just as other typical low-power and lossy networks (LLNs), i.e. 6LoWPANs. The design of the Constrained Application Protocol (CoAP), that took the limitations of LLNs into account, is thus also applicable to other transports. The adaptation of CoAP to SMS transport mechanisms is described in this document.


Markus Becker <>
Kepeng Li <>
Thomas Poetsch <>
Koojana Kuladinithi <>

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)