ments for Machine-Type Communications (MTC). TR 23.888, 3rd Generation Part- nership Project (3GPP), March 2012. 66. 3GPP. Security aspects of Machine-Type Communications. TR 33.868, 3rd Generation Partnership Project (3GPP), March 2012. 67. 3GPP. Telecommunication management; Charging management; Charging Data Record (CDR) parameter description. TS 32.298, 3rd Generation Partnership Project (3GPP), March 2012. 3GPP. Telecommunication management; Charging management; Packet Switched (PS) domain charging. TS 32.251, 3rd Generation Partnership Project (3GPP), December 2011. 69. 3GPP. Telecommunication management; Charging management; Diameter charging applications. TS 32.299, 3rd Generation Partnership Project (3GPP), December 2011. 70. 3GPP. Non-Access Stratum (NAS) configuration Management Object (MO). TS 24.368, 3rd Generation Partnership Project (3GPP), September 2011. 71. 3GPP. Tsp interface protocol between the MTC Interworking Function (MTC-IWF) and Service Capability Server (SCS). TS 29.368, 3rd Generation Partnership Project (3GPP), September 2012. 72. 3GPP. Location management procedures. TS 23.012, 3rd Generation Partnership Project (3GPP), October 2010. 73. Shelby, Z., Hartke, K., Bormann, C., and Frank, B. Constrained Application Protocol (CoAP). Internet-Draft draft-ietf-core-coap-11, Internet Engineering Task Force, July 2012. Work in progress. 74. Hartke, K. Observing Resources in CoAP. Internet-Draft draft-ietf-core-observe-06, Internet Engineering Task Force, September 2012. Work in progress. 75. Shelby, Z. Constrained RESTful Environments (CoRE) Link Format. RFC 6690, Internet Engineering Task Force, August 2012. 76. Montenegro, G., Kushalnagar, N., Hui, J., and Culler, D. Transmission of IPv6 Packets over IEEE 802.15.4 Networks. RFC 4944, Internet Engineering Task Force, September 2007. 77. Nieminen, J., Savolainen, T., Isomaki, M., Patil, B., Shelby, Z., and Gomez, C. Transmission of IPv6 Packets over Bluetooth Low Energy. Internet-Draft draft-ietf-6lowpan-btle-11, Internet Engineering Task For