name: VCC
full_form: Virtual Channel Connection
context: PTD and PDV shall be considered: in other words a measurement point shall correspond to one CPS Service Access Point (SAP) at which a CPS-SDU is submitted to the CPS. The second measurement point is localised at the peer SAP delivering CPS-SDU, as shown in Figure 2. Figure 3: The differences between CTD and PTD The packing density results from characteristics of AAL2 user traffic: larger the length of submitted user data is, more significant packing density is. However, there is a theoretical limit of packing density equal to . Figure 3 depicts the evolution of average packing density according to average length of AAL2 user data (CU_Timer = ) Figure 4: Evolution of packing density according to average length of user data According to [10], the CU_Timer_ also affects packing density: if the cell is not completely packed within the time period determined by the CU_Timer_ value, the timer expires and the partially packed cell will be sent. Consequently, the number of VCs on which AAL2
description: A Virtual Channel Connection (VCC) is a logical connection between two endpoints in an ATM network. It allows multiple Logical Link Connections (LLCs) to be multiplexed onto a single physical link while ensuring Quality of Service (QoS) requirements are met.
explanation: The description explicitly states that VCCs are logical connections within an ATM network, facilitating data transmission between endpoints. This aligns with the definition of a 'Channel' as a medium for communication.
section_title: 6.2.4.3	Support for QoS requirements
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