name: OSI
full_form: Open Systems Interconnection
context: This section contains some general comments on the first proposal for the Iuant interface described in section 6.1. Changed coaxial communication method The coaxial communication method is changed to a more robust communication scheme, namely FSK. The FSK has two main benefits compared to ON/OFF keying: ï· It supports three states: Undriven, 1, 0, which corresponds to the states of RS485. It is therefore more suited as a RS485 repeater/modem. ï· It is less sensitive to antenna system variations. There is a big difference between the signal level at the receiver of a straight antenna system and a shared antenna system (e.g. with GSM). The use of an FSK communication removes the need of defining a threshold level. Together, this makes FSK more suited. It also supports 115.2 kbps communication. General clean-up The interface does not need all the state handling defined in proposal 1. The RET shall be ready for operating directly after communication is established (address is assigned).
description: The Open Systems Interconnection (OSI) model is a conceptual framework used to understand and standardize the functions of a telecommunication or computing system. It consists of seven layers, each with specific responsibilities for data transmission and reception.
explanation: While the OSI model is fundamental to understanding telecommunications, it's a conceptual framework rather than a specific technology, protocol, or network function. Therefore, it's classified as Miscellaneous.
section_title: Annex A (informative):
  OSI model overview
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