The playbook can install and configure go-skype-bridge for you.
See the project page to learn what it does and why it might be useful to you.
To enable the Skype bridge, add the following configuration to your inventory/host_vars/matrix.example.com/vars.yml file:
matrix_go_skype_bridge_enabled: true
After configuring the playbook, run the installation command: just install-all or just setup-all
Once the bot is enabled, you need to start a chat with Skype bridge bot
with the handle @skypebridgebot:example.com (where example.com is your base
domain, not the matrix. domain).
Send help to the bot to see the commands available.