5.1.3 Network interface

34.229-43GPPInternet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP)Part 4: Enabler for IP multimedia applications testingRelease 11TSUser Equipment (UE) conformance specification

Similar to the majority of TCP/IP stack implementations, a network interface (IF0, IF1, IF2, etc.) structure is used to connect the IP-CAN bearer to IP protocol entity. When the ASP for setting up an IP-CAN bearer is called via the IP‑CAN control port, the SS shall connect the established radio access bearer to the relevant IF structure, in order to provide the radio bearer connectivity to the IP/IPsec layer. In order to ease maintenance, all IP-CAN control has been encapsulated into its own Parallel Test Component.