Case Study: Solution for Master Headends

In this ideal Master Headend VB220 IP-PROBE by Bridgetech monitor signals which are received and descrambled by a professional receiver/descrambler. Each probe
performs real-time monitoring of IP parameters like packet loss and packet jitter for up to 180 TV multicasts in parallel, in addition to real-time and continuous ETR 290 monitoring of one transport stream. Each ETSI TR 101 290 engine for IP can also operate in round-robin mode scanning across multiple IP MPTS/SPTS streams.
The VB280 Content Extractor provides thumbnail pictures of headend input signals to be presented by the VideoBridge Controller (VBC), and it also checks input signals for freeze-frame conditions and loss of audio . The VB280 may also trigger alarms if input signals are not properly descrambled.
The Headend is also equipped with a reference signal generator, the VB230, for RTP or UDP packet generation. After this stage the signals are rescrambled.The headend output IP-Probes are connected to the output of the Ethernet switch feeding the backbone network. These IP-Probes verify that the signals transmitted from the playout are correct with respect to ETR 290 parameters and they also check vital CA parameters like ECMinterval and control word period. These probes also serve as references for downstream probes in the sense that inherent errors in the playout signals are detected and will not be perceived as errors originating in the transport network. Each VB220 IP-Probe module also includes an ASI input port, enabling parallel ASI analysis to take place. ETR101290 analysis of the ASI signal is available, with alarming, service tree analysis, PSI/SI/PSIP analysis, PCR analysis and PID analysis.
A VideoBridge Controller is used for controlling all Bridgetech units in the system. The natural location for the VBC server is in the central playout. VBC clients may, however, be located anywhere, provided that they can connect to the VBC server.
However, it’s possible to integrate all this products in other NMS (proprietary or open source) through their xml/snmp/soap interfaces.