Telos iPort user manual Diagnostics and Troubleshooting, Decoder

livewire-WAN Link  11

Decoder

The Buffering drop-down box lets you choose how much buffer is applied to the received streams. A lower value gives lower delay, but depends upon the network to have low jit- ter. There are a range of values, so that you can experiment to find the optimum for your

network conditions. The	usual procedure is to try successively lower values until you hear
audio interruptions. Then	back off to a higher value with a bit of margin.

The Protocol type is set to correspond to the value set at the encode side unit.

When all values are entered, click the Apply button. This both accepts your changes and takes you back to the main Codec page. Here are sample configurations for the first two channels:

The Livewire channel numbers and names are entered as you would for any LW device. While it’s possible to enter separate channel numbers and names for the send and receive directions (as in this example), normally these would be the same, since Livewire channel numbers/names identify a bundle of both send and receive audio.

The Status box shows the condition of the LW channel. OK means that the Livewire audio stream is being correctly sent and/or received and has proper synchronization. The Audio box is a kind of simple level indicator that shows green when audio is present.

Under the Local heading, you can see the IP number and ports being used by the iPort for the MPEG stream. These are greyed-out because they are for your information only; the values cannot be changed.

Under the Remote heading are the values for the far-end iPort to which this one is con- nected. You should enter the IP number and port for the send stream destination. The greyed IP values are automatically filled-in to show the source of the MPEG streams from the remote iPort.

Don’t forget to click the Apply button when all of your entries are made. This must be done individually for each channel.

The line of text at the bottom of each channel’s field shows the configured codec and stream protocol values that were made on the page under the Options button.

Diagnostics and Troubleshooting

The Stream Statistics and Diagnostics pages offer information and functions useful for checking the iPort for proper operation and for troubleshooting when there are problems.

The iPort can log with various levels of detail to either an internal file that can be down- loaded and inspected or to an external standard Linux-style syslog device. These options are