Traffic handling system for PBX - allows installations to test one another and reduces testing time using recognition codes
摘要
<p>The system has a first installation sending a disconnect code to test which the opposing installation is when testing by the first installation. When testing by the second installation, the second installation sends a triggering code. Two installations connected into the branch network can therefore test one another without having to run through complete busying and disconnecting procedures. The test procedure is greatly simplified.</p>
