name: IMS-AGW
full_form: IMS Acess Gateway
context: can be an implementation alternative. In this example, media is encrypted (with SDES keys in SDP) from Target to the Ingress point of IMS-AGW and not encrypted from the Egress point of IMS-AGW and beyond. Therefore, for Case 1 and Case 2, the DF2 has to provide the SDES keys to the DF3 (see clause 7A.1.A) to perform the decryption. The S-CSCF does not receive the SDES keys within the SDP of SIP messages. Therefore, P-CSCF shall send the SDES Keys to the DF2 and the DF2 shall use that for its handling (i.e., sending to the DF3). P-CSCF does not send any SDES Keys to the DF2 for Case 3 since the CC is intercepted in the Egress point of IMS-AGW in a decrypted form. In a scenario like this, an implementation can also be such that the CC interception is always done at the Egress point of IMS-AGW (i.e., only Case 3), but because of some deployment situations and regulations, there may also be a need to perform the CC interception at the Ingress point of IMS-AGW (Case 2) or at the PDN-GW
description: The IMS Access Gateway (IMS-AGW) is a network function that provides access to the IP Multimedia Subsystem (IMS) for user equipment. It acts as an entry point for media and signaling, enabling communication between the UE and the IMS core network.
explanation: IMS-AGW is classified as a Network Function because it provides a specific service within the telecommunications infrastructure by facilitating access to the IMS for user equipment. Its role in managing media and signaling traffic aligns with the definition of a network function.
section_title: G.3	CC Interception of transcoded media with e2ae encryption
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biotag_Description: O,B-Network,B-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,B-Network,I-Network,I-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,B-Network,O,O