ROIP Gateway

This project demonstrates how to use the Linphone library to create a Radio over IP (ROIP) gateway. It manages VoIP calls, codec configurations, and audio streams, enabling communication between radio systems and IP networks.

Features

• Drop Call: Drop an ongoing call by extension using HTTP requests.
• Registration: Register and unregister with a SIP server.
• Codec Management: Enable, disable, and list audio and video codecs.
• Sound Device Configuration: Configure sound devices for playback and capture.
• Call State Monitoring: Track call state changes and detect voice activity.

Dependencies

• Linphone core library
• CURL library
• pthread library

Key Functions

• DropCallByExtension: Sends an HTTP request to drop a call by extension.
• Register: Registers the user agent (UA) with the SIP server.
• Unregister: Unregisters the UA from the SIP server.
• TestCall: Initiates a call to a specified destination.
• RoipCall: Specialized function for handling ROIP gateway calls.
• ListCodecs: Lists available audio or video codecs.
• VoiceActivityDetection: Detects voice activity based on bandwidth.

Usage

1. Build: Compile the code using a C compiler with necessary libraries linked.
2. Configure: Update the identity and password variables with your SIP credentials.
3. Run: Execute the compiled binary to start the ROIP gateway.

gcc -o linphone_roip_gateway main.c -l linphone -l curl -lpthread
./linphone_roip_gateway

Example

To make a call through the ROIP gateway:

RoipCall(lc, "*100@10.10.10.20:5070");

License

This project is licensed under the MIT License. See the LICENSE file for details.