Reliable Transport services configuration and management

Import a Reliable Transport service

Prior importing a service, make sure:

• the format of the file is correct (valid json);
• the service_type field in your configuration file is srt (even though the configuration may be for a Zixi connection);
• the imported service name is different from the existing services, otherwise the imported file will override the existing service.

1. Display services.

2. Click Import service...

3. Click Select file to browse for the .json file previously exported for this service.

   

   Warning service xxx exists when trying to import the configuration file: Read carefully the message and follow instructions to either override the existing service or cancel the operation.

   • If the service to be overwritten is running, the operation should always be aborted to avoid customer operations disruption.
   • If you overwrite an existing service, any changes applied to it will be overwritten.

4. Click Import. The service imports and appears in the list of services.

Create a new Reliable Transport service

1. Display services.

2. Click Add service

   

3. Select Reliable Transport. The following page displays:

   

4. Assign a name to the new service (100 characters max). This name will appear in your Services page, therefore it is recommended to choose a unique name for each service for easier identification from the Services page.

5. Continue the service configuration depending on your needs:

   • SRT connection configuration
   • Zixi connection configuration

Configure a Reliable Transport service

SRT connection configuration

SRT services can be created to implement the following use case:

Two services are required:

• Service 1 with Input Mode = UDP and Output Mode = SRT Listener
• Service 2 with Input Mode = SRT Caller and Output Mode = UDP

Zixi connection configuration

Zixi services can be created to implement the following use case:

Two services are required:

• Service 1 with Input Mode = UDP and Output Mode = Zixi Feeder
• Service 2 with Input Mode = Zixi Receiver and Output Mode = UDP

Reliable Transport parameters

The configuration of the Input and Output section for the service depends on the use case needed.

1. Select the Input Mode from the corresponding drop-down menu on the left side of the Reliable Transport service configuration page.

   

2. Select the Output Mode from the corresponding drop-down menu on the right side of the Reliable Transport service configuration page.

   

3. Complete the Input and Output parameters that come with the selected mode:

   • UDP configuration
   • SRT Caller configuration
   • SRT Listener configuration
   • Zixi Feeder configuration
   • Zixi Receiver configuration

UDP configuration

SRT Caller configuration

Predicted Worst Case Link Characteristics

The Latency and Maximum Bandwidth Overhead should match for Listener and Caller on the same connection. In case of mismatch, the highest values will be used.

To calculate the optimal values for Latency and Maximum Bandwidth Overhead:

1. Click the Calculate button to launch the Latency and Bandwidth overhead calculator.

2. Set Round Trip Time and Packet Loss Rate according to the instructions and make sure the calculated values for SRT latency and Maximum Bandwidth Overhead do not show errors.

3. Use the calculated values to fill in the Latency and Maximum Bandwidth Overhead in the SRT Caller parameters section.

4. Click Set to automatically apply the calculated values.

SRT Listener configuration

Predicted Worst Case Link Characteristics

The Latency and Maximum Bandwidth Overhead should match for Listener and Caller on the same connection. In case of mismatch, the highest values will be used.

To calculate the optimal values for Latency and Maximum Bandwidth Overhead:

1. Click the Calculate button to launch the Latency and Bandwidth overhead calculator.

2. Set Round Trip Time and Packet Loss Rate according to the instructions and make sure the calculated values for SRT latency and Maximum Bandwidth Overhead do not show errors.

3. Use the calculated values to fill in the Latency and Maximum Bandwidth Overhead in the SRT Caller parameters section.

4. Click Set to automatically apply the calculated values.

Zixi Feeder configuration

Multiple Zixi Broadcasters management

A Zixi Feeder output can be configured and connected to multiple Zixi Broadcasters, however:

• The Zixi Feeder will only connect to one of them;
• The choice is random (will not necessarily connect to the first one specified, even if available).

1. Click Add New Connection to configure a new pair of Host/Port information for a different Zixi Broadcaster.

2. Repeat for each new Zixi Broadcaster to configure.

Zixi Receiver configuration