The ASA covers the basic framework under which airlines enjoy bilateral economic flight rights in two countries. Frequency, designated airlines of the two signatory states, points of origin and intermediate points, traffic rights, type of aircraft and tax issues are generally covered by soft. The CBR service category is used for connections carrying traffic at a constant rate, for which there is an inherent dependence on the temporal synchronization between the traffic source and the objective. The CBR is suitable for all types of data for which terminal systems require predictable response time and static bandwidth that is permanently available for assembly life.   The bandwidth is characterized by a peak cell rate (PCR). These applications include services such as video conferencing, telephony (telephony services) or any type of on-demand service. B for example interactive language and audio. For native telephone and voice applications, CBR offers low latency data traffic with predictable transmission properties and is therefore generally used for circuit emulation.   ABR uses resource management cells (RM) to provide feedback that controls the data source in response to fluctuations in available resources in the internal ATM network. ABR flow control specifications use these RM cells to control cell flow based on the flow effect on ABR connections. The ABR service expects the terminal system to adjust its traffic rate based on feedback, so that it gets its fair share of available network resources. The goal of the ABR service is to allow quick access to available network resources up to the specified peak cell rate (PCR).  The ABR service category is similar to nrt-VBR, as it is also used for routes that carry variable flows for which there is no time synchronization between source and destination and for which there are no necessary guarantees for bandwidth or latency.
ABR provides a best-effort transportation service that uses flow control mechanisms to adjust the bandwidth available for the origin of traffic. The ABR service category is designed primarily for any type of traffic that is not timed and does not provide service guarantees. ABR service is generally preferable for TCP/IP traffic, as well as other LAN-based protocols that can change its transmission behavior in response to ABR`s speed control mechanics. Air Services Agreements (ASAs) are formal contracts between countries – Memorandums of Understanding (Memorandum of Understanding) and formal diplomatic notes. It is not mandatory to have an ASA for the operation of international services, but cases where contract-free services exist are rare. In 1913, a bilateral exchange of notes  between Germany and France was signed in the first agreement to provide airship services. These settings are the traffic descriptor for the connection. The IATA Multilateral Interline Traffic Agreements (MITA) is an agreement under which passengers and freight are a standard transport document (i.e.