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The following pages contain instructions on setting up SSL Live consoles for use with a Dante network, routing to and from Dante devices and controlling and gain sharing with SSL Net I/O Stageboxes:
Setting Up Dante
Dual Domain Routes and Configuring Dante Devices
Network I/O Stageboxes and Devices
Virtual Tie Lines (this page)
Network I/O BLII Bridge

Working with Virtual Tie Lines

Using Virtual Tie Lines allows SSL Live consoles to be used as a typical Dante I/O device.

Local Virtual Tie Lines will appear in the routing view as a local I/O type.

When routing to a Virtual Tie Line, only the internal route in the console is made - connecting a path to the Dante Expander Module.

The network route (connecting the Dante Expander Module to another Dante device on the network) must be made manually from Dante Controller.

Virtual Tie Lines should be used for routing between multiple SSL consoles, for live recording and rehearse mode.

Virtual Tie Lines cannot carry control data, and should not be used for routes from Net I/O stagebox inputs unless control is not required.

The Dante Expander Module's I/O does not contain any Virtual Tie Lines by default, they must be created.

Please Note:
When the console is connected to a BLII Bridge, Virtual Tie Lines must be created before dual domain routes. The console is not deterministic when choosing a Dante interface to create dual domain routes through. And the console cannot switch routes from the Dante Expander to the BLII Bridge once routes have been made. Failure to create Virtual Tie Lines before dual domain routes, can cause the Dante Expander's Dante I/O resource to be used up by dual domain routes, at which point the console will not allow more Virtual Tie Lines to be created.

Creating Virtual Tie Lines

Through the Dante Expander Module

To create Virtual Tie Lines go to MENU > Setup > I/O > Local/MADI Configuration then tap on the Dante Expander Module to bring up its Detail View. Double tap on the Virtual Tie Lines label area and select the number of Virtual Tie Lines you require. This will create the same number of inputs and outputs.

Up to 32 Virtual Tie Lines can be created at 96kHz or up to 64 at 48kHz.

Through a BLII Bridge

To set up Virtual Tie Lines on the BLII Bridge, go to MENU > Setup > I/O > Local/MADI Configuration. Tap on the top of the BLII port column corresponding to the local BLII port that the BLII Bridge is connected to. The Detail View for the BLII Bridge will now appear. On the BLII Bridge it is possible to create Virtual Tie Line Inputs and Outputs separately. Double tap on the Virtual Tie Line Inputs or Outputs text fields to change the quantity of Virtual Tie Lines.

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Up to 256 Virtual Tie Lines can be created at 96kHz or 48kHz.

BLII Bridge Virtual Tie Lines appear in the Routing View under BLII. The routing points are divided into groups of 32 channels per "Port".



When dual domain routes are made, fewer Virtual Tie Lines can be created.

For example: If the console and Dante Expander Module are at 96kHz the maximum Dante routes possible is 32 (without a BLII Bridge). If 2 dual domain routes are made, the remaining number of possible Dante routes becomes 30. So no more than 30 Virtual Tie Lines can now be created.

Creating one Virtual Tie Line creates an input and an output simultaneously.

If the quantity of Virtual Tie Lines does not update after attempting to create more, you have reached the maximum quantity of Virtual Tie Lines possible.

This could be because

For example (at 96kHz), if I make 10 Virtual Tie Lines, Dante inputs and outputs 1-10 will be assigned to Virtual Tie Lines. All existing dual domain routes using these I/O points will be moved to different routing points. Only Dante inputs and outputs 11-32 are now available for dual domain routes.

The total quantity of dual domain routes and Virtual Tie Lines cannot exceed 32 channels at 96kHz or 64 channels at 48kHz. The number of Dual Domain Routing inputs/outputs currently in use is displayed in a resource bar above the Configured Devices list in the Dante Configuration page.

Important:
Changing the quantity of Virtual Tie Lines may cause a brief loss of audio.

Routing to/from Virtual Tie Lines

The Dante Virtual Tie Lines created will now appear in the routing view.

First, make a route on the console to/from Local Virtual Tie Lines or one of the routing points under BLII for BLII Bridge Virtual Tie Lines.

Then in Dante Controller, make the route between the console's Dante Expander Module/BLII Bridge (as appropriate) and the other Dante device.

For example, let's say we want to route two channels from a computer running Dante Virtual Soundcard to the input of Channels 1 and 2 on the console using Virtual Tie Lines.

Ensure both the console's Dante Expander Module and the computer running Dante Virtual Soundcard are visible in Dante Controller and within the same subnet (names in black text).

Now create two Virtual Tie Lines on the console. Go to MENU > Setup > I/O > Local/MADI Configuration and tap on the Dante Expander. Double tap on the Virtual Tie Lines quantity and enter 2.

Now locate Channels 1 and 2 in the Channel View. Double tap on Channel 1's eyeconix image and tap on Input/Routing. Now tap on Route Input A. Tap on the console (first routing point, usually starts with "LIVE"). Now tap on Local Virtual Tie Lines. Tap on 1 and tap Make. The route will go green.

Now repeat this for Channel 2 and Dante Virtual Tie Line 2.

Back in Dante Controller, open the crosspoint matrix for the computer's transmit channels and the console's Dante Expander receive channels.

Create a route from the computers Dante Virtual Soundcard channels 1-2 to the console's Dante Expander channels 1-2 by clicking in those crosspoints.

Green checkmarks will appear in those crosspoints.

Using the Dante Expander Module as a Live Recorder

You can also use the Dante Expander Module as a Live Recorder.

To do this go to MENU > Setup > I/O > Local/MADI Configuration and tap on the Dante Expander Module.

Select the appropriate recorder ID, and the quantity of Virtual Tie Lines will be created automatically (32 at 96kHz or 64 at 48kHz).

The Dante Expander can now be used as a Live Recorder or with Rehearse mode, just as MADI devices. For more information on Live Recorders please see Live Recorder Setup and Rehearse Mode.

Please Note: It is not possible to configure groups of BLII Bridge Virtual Tie Lines as Live Recorder IDs.

What are the Differences Between Dual Domain Routes and Virtual Tie Lines?

There are two methods available for Dante routing on SSL Live consoles: Dual Domain Routes and Virtual Tie Lines.

Dual Domain Routes

Dual Domain Routes are unique to SSL, allowing the console to interact directly with devices on the network, with no need to use Dante Controller to make routes.

When using Dual Domain Routes, Dante devices will appear in the console's routing view.

Dual Domain Routes are used for most routing situations. Dual Domain Routes from SSL Net I/O stageboxes to Channel inputs also provide gain control as well as control over other stagebox parameters (eg. +48V).

As with normal Dante routes, by default Dual Domain Routes are created using unicast flows. If multicast flows are desired, these must be set up in Dante Controller in the usual way. Any existing Dual Domain Routes using those transmit channels will be converted to multicast and any Dual Domain Routes subsequently created from those transmit channels will be multicast.

Please Note:
Dual Domain Routes should not be used for routing between multiple SSL consoles. Use Virtual Tie Lines for this purpose (see below). This is because when SSL consoles make a Dual Domain Route from the console, the console is not deterministic when choosing a Dante output to route from, or a Dante input on the other device to route to. This route will be created in any of the available routing points. If the other device is an SSL console, this non-deterministic approach means the receiving console is not aware of which input has been routed to (and vice versa).

Devices must be configured in the Dante Configuration page before Dual Domain Routes can be made. The Dante Configuration page is the console's Dante I/O Setup page.

Dual Domain Routes can be made through the Dante Expander Module or the BLII Bridge.

For more information on Dual Domain Routes and configuring Dante devices please see Dante Dual Domain Routes.

Virtual Tie Lines

Using Virtual Tie Lines allows SSL Live consoles to be used as a typical Dante I/O device.

Once created, Local Virtual Tie Lines will appear in the routing view as a local I/O type.

When routing to a Virtual Tie Line, only the internal route in the console is made - connecting a path to the Dante Expander Module.

The network route (connecting the Dante Expander Module to another Dante device on the network) must be made manually from Dante Controller.

Virtual Tie Lines are used for routing between multiple SSL consoles, for live recording and rehearse mode.

Virtual Tie Lines do not carry control data, and therefore should not be used for routes from Net I/O stagebox inputs to the console unless control is not required.

The Dante Expander Module's I/O does not contain any Virtual Tie Lines by default, they must be created.

Virtual Tie Lines can be made through the Dante Expander Module or the BLII Bridge.

For more information on creating and routing with Virtual Tie Lines please see Dante Virtual Tie Lines.

Useful Links:

Setup: Installation Guide
Index and Glossary
NEXT: Network I/O BLII Bridge