Redundancy

Redundancy for Answered But Non-Connected Channels

Calls that in the answer state but not connected to another channel can be restored when there is a matrix switchover.

The following are possible scenarios leading to a channel that is answered but not connected to another channel.

• When the Excel platform provides a media service (for example, play a tone/announcement or collect digits) to a physical channel, the channel is slaving but is not connected to another node, conference, or broadcast. The IP Network Interface Series 2 card is in non-port consuming mode.

To enable this feature, set the CH component (0x61) configuration byte 0x1A to 0x01. See CH - Channel Management (0x0061).

The following is a sample PPL Configure message to allow span 00 07, channels 00-02 to restore answered calls upon a matrix switchover.

00 17 00 D7 00 00 01 01 02 0D 03 00 07 00 0D 03 00 07 02 00 61 01 01 1A 01

Redundancy for One-Way Connections

You can set up a one-way connection and maintain it during a matrix switchover. The feature is for physical channels only. It does not apply to virtual channels.

To enable this feature, park the channels and then send the Connection Type TLV (0x0612) in the Connect with Data (0x0005) message. This TLV indicates whether a two-way connection (default) or one-way connection is set up.

The following is an example of the Connect with Data message with the Connection Type TLV that sets up a one-way connection between channels 00 and 01 on span 00 00:

00 20 00 05 00 10 01 00 02 0D 03 00 00 00 0D 03 00 00 01 01 01 03 00 1E 00 08 00 01 06 12 00 02 00 01