--- Install ---

To install the plugin simply extract the archive to the WebApp's plugin
directory and modify the config.php file according to your needs.

Each user can enable the plugin individually via the advanced setting
'zarafa/v1/plugins/placecall/enable'. The default setting is determined
by the PLUGIN_PLACECALL_USER_DEFAULT_ENABLE key in the config.php file.

In order to use this plugin a running Asterisk instance is required.
Access to Asterisk is achieved via

Call Files (http://www.voip-info.org/wiki/view/Asterisk+auto-dial+out)

or the

Manager API (http://www.voip-info.org/wiki/view/Asterisk+manager+API).

To use Call Files the necessary prerequisites on Asterik side need to be
met (you can check this by creating a simple call file and queue it by
yourself as described in the link). Further more the http user running
the Zarafa WebApp must be a member of the asterisk group and must have
access to the Asterik's spool directory.

To use the Manager API the Asterisk box must be accessible by the
http box and you need to know some user credentials for the Manager API
with sufficient rights (originate).

See the config.php file for further configuration details.
