BICC Call Control and IP Bearer Control Overview

To perform IP Bearer control, BICC messages (Call Control or APM) are used to tunnel the IP bearer-related information, such as Bearer Characteristics, Codec, and IPBCP. IPBCP (IP Bearer Control Protocol) is a protocol based on SDP, and is used to exchange Bearer IP Addresses, RTP port numbers, and Packetization Time.

These two call flows are commonly used call flows in a 3GPP BICC IP Core Network.

• Forward bearer establishment with fast forward tunneling

• Forward bearer establishment with delayed forward tunneling (and optional codec negotiation)

Note: Some of the call flows use Dialogic platform. Please refer to Dialogic for more details about the implementation.

Call Flow: Forward Bearer Establishment with Fast Forward Tunneling

The following illustration shows forward bearer establishment with fast forward tunneling Call Flow:

Call Flow: Forward Bearer Establishment with Delayed Forward Tunneling

The following illustration shows forward bearer establishment with delayed forward tunneling Call Flow:

3G-324M over IP Components

The following illustration shows the 3G-324M over IP components from a stack perspective and highlights the BCF library: (Using DIALOGIC's NaturalAccess Platform)

Content courtesy: Dialogic