20-Appendix E Reference for GSM Protocols
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ITM GSM
J.Tiberghien - VUB10-05-K.Steenhaut & J.Tiberghien - VUB 1 Telecommunications Concepts Chapter 2.1 The Circuit Switched Telephone Network.
Mobile Communication The Mobile Station (MS) is the user equipment in GSM. The MS is what the user can see of the GSM system, the cellular phone itself.