CDQPrima Application Note #5

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CDQPrima Application Note #5

CDQPrima Application Note #5

Application: Your CDQPrima can automatically detect the incoming call algorithm, mode and line format.

Example 1, Layer II or Layer III: You can program any CDQPrima model containing an internal terminal to automatically determine the incoming algorithm, bit rate, algorithm mode and line format. The example shown here illustrates just how easy it is.

Here's how to do it:

Create Quick Configurations for the algorithm setups. Most common configurations have already been pre-loaded into your CDQPrima.
Define virtual actions to load the selected configurations.
Define event-to-action statements to determine the number of connected lines and determine when the codec is framed.
Set up 4 Virtual Actions as follows:

CVA 0 CSD 8; EBR A; CTM 0 5	Load Quick Configuration 8 (Layer II, 56/64 kb/s, Mono, 48 kHz sampling, Line 1) and set to automatic bit rate detection. Start a 5 second timer. You can use any other single line Layer II Quick Configuration for different sample rates or lines.
CVA 1 CSD 1; EBR A; CTM 1 5	Load Quick Configuration 1 (Layer II, 112/128 kb/s, joint stereo, 48 kHz sampling, Lines 1 and 2) and set to automatic bit rate detection. Start a second 5 second timer. You can use any other two line Layer II Quick Configuration for different sample rates, mode or lines.
CVA 2 CSD 29; EBR A	Load Quick Configuration 29 (Layer III, 56/64 kb/s, Mono, 48 kHz sampling, Line 1) and set to automatic bit rate detection. You can use any other single line Layer III Quick Configuration for different sample rates or lines.
CVA 3 CSD xx; EBR A	Load Quick Configuration xx (you will have to create your own Layer III 2-line Quick Configuration) and set to automatic bit rate detection.

Set the following Event-to-Action Logic to determine which Virtual Action to execute:

CEA VA0 +(CD1 & CI1)	Execute VA0 when first line connects.
CEA VA1 +(CD1 & CD2 & CI1)	Execute VA2 if second line connects.
CEA VA2 +(CD1 & !FRAMED & TS0 & CI1)	Execute VA2 if Layer II did not frame.
CEA VA3 +(CD2 & !FRAMED & TS1 & CI1)	Execute VA3 if 2-line Layer II did not frame.

Here's how these 8 lines work:

To activate the auto-detect function, enable CUE 1. To deactivate the auto-detect function, turn off CUE 1. On models that do not have CUE buttons, you can control the CUE function from the command menu. Please note that you must turn the auto detect function off to place a call.
As soon as a call comes in, a single line, Layer II configuration is loaded. If no other line connects and the CDQPrima does not frame, a single line Layer III configuration is loaded.
If a second line connects, a 2-line Layer II configuration loads. If the CDQPrima does not frame, a Layer III configuration loads.
Under certain configurations, it may take upwards of 30 seconds to frame.

CDQPrima is the world's only codec with Prima Logic Language, a powerful command language that lets you program your CDQPrima for a wide variety of automatic functions. We're happy to help you get the most from your CDQPrima.