The Vocera Client Gateway (VCG) allows phone clients to communicate with the
Vocera Voice Server.
You must install and configure a VCG that the Vocera Smart Phone Client will use. When your
Vocera Deployment supports multiple sites, you can accommodate any of the following
configurations:
- Enable and configure VCGs for each site.
- Enable and configure VCGs for the Global or default site.
All client devices and the VCG server should be configured to connect to the same site
location. If a VCG is not configured for a particular site, by default, the client devices
connects to the VCG Global site. When you install a VCG, the user interface provides a
field where you specify the IP address of the Vocera Voice Server or the list of nodes in a
cluster and the name of the site with which you want the VCG to connect. During the VCG
installation, the program sets the VOCERA_SITE environment variable
according to the the site name that you specify in the user interface.
If you do not specify a site, the
VOCERA_SITE environment variable
is set to Global by default, and the client Gateway server is associated with the Global
site. As each client gateway server boots, it associates itself with the
Vocera Voice Server and
site specified during the installation.
Note:
After installation, you can associate the
VCG with a different site by manually changing the value of the
VOCERA_SITE environment variable.
The figure below shows an example of a VCG array which provides redundancy, scalability,
and load balancing.
Figure 1. Multiple-site Vocera Client Gateway