Features:

• SNMP Master Agent functionality
• Support of SNMPv1 and SNMPv2
• Powerful decontis Base-MIB for monitoring and configuration purposes
• Real-Time Monitoring all DVB-H relevant parameters of ETSI TR 101 290
• Real-Time Monitoring of additional DVB-H parameters as Jitter, MPE-FEC ...
• Real-Time Monitoring of ESG receipt
• Automatic start/re-start of dvbSAM components
• Individual configuration of Error- and Warning-levels
• Automatic creation of TS snapshots if an error-level is exceeded
• Logging of all SNMP operations

figure 1: System Overview - dvbSAM SNMP based Monitoring Solution

As shown in figure 1, the dvbSAM SNMP based monitoring network consists of at least one operator and any number of remote monitoring stations. On all remote monitoring stations the dvbSAM components SAMcorder, SAMbera, SAMesg and SAMager Agent are running in order to continuously monitor the MPEG2 transport stream and the ESGs.

figure 2: dvbSAM Remote Monitoring Station

The actual monitoring is performed by several dvbSAM components on the dvbSAM remote monitoring station as shown in figure 2.

• SAMager Agent
  SAMager Agent provides the SNMP interface and collects all status information from the dvbSAM components continuously.
• SAMcorder
  SAMcorder, the central input-/output-processor within dvbSAM, receives the DVB-H transport stream and provides the data for further analysis to SAMbera and SAMesg.
• SAMbera
  SAMbera monitors in realtime all DVB-H relevant parameters of the entire MPEG2 transport stream and additionally the RF parameters of the broadcast
• SAMesg
  SAMesg monitors in realtime the receipt of ESG bootstrap and ESG containers as well as their update cycles.

decontis provides its own comprehensive MIB consisting of hundreds of objects. So a very detailed status is available from any Remote Probe placed within the network, which makes a monitoring very efficient, since problems are already analyzed and reported very well.

The decontis Standard-MIB is especially designed for monitoring of DVB-H broadcasts, but can also be used for the monitoring of DVB-T or DVB-S transmissions. The MIB provides objects for all DVB-H relevant parameters of ETSI TR 101 290, separated by Prio 1/2/3 as well as additional DVB-H parameters. Furthermore MIB objects for the monitoring of several RF parameters and the receipt of ESG are provided.

Prio 1	TS Synchronization Loss TS Synchronization Byte Error PAT Error PMT Error Continuity Count Error PID Error
Prio 2	Frame Error Ratio (FER) Transport Error CRC Error CAT Error
Prio 3	SI Table Repetition Error for NIT, SDT, BAT, EIT, RST, TDT, TOT, ST Undefined PID Error
DVB-H specific	MPE Frame Error Ratio (MFER) IP Packet Error Ratio (IP-PER) MPE-FEC Error Time Slice / Jitter Error
RF	Signal Level SNR (signal to noise ratio) MER (modulation error ratio) BER after Viterbi (bit error ratio) PER (packet error ratio)
ESG	ESG state number of received bootstrap updates time of last bootstrap update number of received container updates time of last container update

Moreover the decontis Standard-MIB provides objects which summarizes the individual error categories:

• Prio 1 error occurred
• Prio 2 error occurred
• Prio 3 error occurred
• DVB-H error occurred
• MPEG or ESG error occurred

Beside the MPEG and ESG error monitoring the decontis Standard-MIB provides additional usefully functions, e.g. the monitoring of version change of SI tables, the version number or the time of last version change.

For the most operations a corresponding TRAP is available. Each single TRAP can be enabled or disabled via SNMP.

figure 3: SAMager Agent - Main Control Window

The SAMager Agent control window supplies always the current status of the SNMP Agent connection as well as about the SNMP communication. Additionally SAMager controls the connection to the dvbSAM components SAMcorder, SAMbera and SAMesg and indicates the receipt of status information. SAMager Agent is able to start and/or re-start these components automatically.

SAMager Agent provides a powerful tool for MIB configuration, i.e. all operations with read/write access rights may be pre-configured, e.g. TRAPs may be enabled or disabled. The configuration can be saved and is loaded with starting the SAMager.

figure 4: SAMager Agent Tool for MIB pre-configuration