ekiga software package provides H.323 and SIP compatible VoIP client, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ekiga
ekiga is installed in your system.
Make ensure the ekiga package were installed using the commands given below,
$ sudo dpkg-query -l | grep ekiga *
You will get with ekiga package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | GNOME |
| Package | ekiga |
| Version | 4.0.1-6build4 |
| Description | H.323 and SIP compatible VoIP client |
| Sub Section | GNOME |