User's Guide

4 Sonar 6
7signal Ltd, Panuntie 6, FI-00620 HELSINKI, FINLAND, [phone], [e-mail], www.7signal.com
7signal Sapphire Carat Carat User Guide Release 3.0
4 SONAR
The role of the Sonar test server in 7signal Sapphire is to emulate one of the customer’s
production servers. Sapphire Eye contacts Sonar over the radio network to use some of the
services available or to request Sonar to contact Eye, if so specified in the service model. Sonar
and Eye thus implement the client–server model during active testing. The roles vary,
depending on the test. This symmetry of roles ensures that both directions (uplink and
downlink, or A subscriber in phone calls) can be measured. The Eye system’s test results are
always sent to the management tool Carat, either by Eye itself or by Sonar.
A single Sonar can serve several monitoring stations without being affected by the monitoring
station‘s home network. One Sonar can therefore be used as the test point for several
networks.
The 7signal Sapphire WQA solution supports the concurrent use of several Sonar test servers,
which means that Sonar can be installed on several servers within a company. Using several
Sonars enables the company to detect and locate problems in its network. Sonar can be
located in the same network as the access points, in a server room in the same building, or
anywhere on the Internet – such as in the centralized identification and authorization center of
an international organization.