1. 3GPP: Application of the Base Station System Application Part (BSSAP) on the E interface. TS 49.008, 3rd Generation Partnership Project (3GPP) (2015).
http://www.3gpp.org/DynaReport/49008.htm
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2. 3GPP: IP Multimedia Subsystem (IMS). TS 23.228, 3rd Generation Partnership Project (3GPP) (2016).
http://www.3gpp.org/DynaReport/23228.htm
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3. 3GPP: Media Gateway Control Function (MGCF) - IM Media Gateway (2016).
http://www.3gpp.org/DynaReport/29332.htm
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4. AITIA: SGA-NETMON The GSM/GPRS/UMTS/LTE Network Monitoring System. White paper (2012).
http://sga.aitia.ai/pdfs/SGA-NetMon.pdf
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5. Balcerzak, J., Tyszka, G., & Senecal, S. (2014). QoS monitoring model of registration procedure for IMS platform. In 16th international telecommunications network strategy and planning symposium.