ipcall

ipcall is a command-line application to perform voice calls between two IP addresses. It is implemented in Golang and builds on a Go wrapper for portaudio.

To use ipcall, install portaudio on your machine and grant the terminal emulator access to the mircrophone (if/when prompted when running ipcall). To build the application, simply run go build and the ipcall binary will be produced. The following shows an invocation of the ipcall program.

./ipcall -s-addr=<server-addr> -l-addr=<listen-addr> -c-addr=<client-addr>

Here are the flags:

• -s-addr is the flag which specifies the address of the server used to relay packets to the client (<client-addr>).
• -c-addr is the flag which specifies the address of the client with which the call is to be performed.
• -l-addr is the flag which specifies the address on which the client will listen for packets relayed from <client-addr>.

Network Stats

Currently, the throughput of this server is about 16.5 kbps, with a 5000Hz sample rate (so about 17.5% compression on 20kbps).