4.1.1 Reserving Extra Time Slots

If you wish to send echo-cancelled data to another device in your system over a time-division-multiplexed bus (TDM bus), you must reserve an extra time slot for your CSP-capable channel.

Notes:

1. On DM3 boards, this feature is not supported.

2. On D/120JCT-LS boards, you must turn the extra time slot parameter on to use CSP.

In Linux, you configure this time slot at initialization time in dialogic.cfg. In Windows, you configure this time slot at initialization time in the Dialogic Configuration Manager (DCM), under the Misc tab. See the System Installation and Configuration Guide and DCM online help for more information.

To retrieve the number of the time slot which transmitted the echo-cancelled data, use ec_getxmitslot( ). For details, see the Continuous Speech Processing API Library Reference.

By default, no extra time slots are configured. It is assumed that the echo-cancelled data is sent to the host application, either recorded to a file for storage or streamed to memory for use by the application.

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