CDQPrima Application Note #6

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CDQPrima Application Note #6

CDQPrima Application Note #6

Application: Your CDQPrima can automatically detect the incoming call line format. Example 2, Layer II single line, 2 line or multiple line using H.221 BONDING:

You can program any CDQPrima model containing an internal terminal adapter 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.
example below also includes automatic detection of G.722.

Set up 4 Virtual Actions as follows:

CVA 0 CSD 4; EAM JS; CTM 1 20	Load Quick Configuration 4 (H.221 6 line BONDING) and set mode to joint stereo. Start a 20 second timer.
CVA 1 CSD 8; EBR A; CTM 0 5	Load Quick Configuration 8 (Layer II, 56/64 kb/s, mono, 48 kHz sampling, Line 1) . Start a second 5 second timer. You can use any other single line Layer II Quick Configuration for different sample rates, mode or lines.
CVA 2 CSD 1; EBR A	Load Quick Configuration 1 (Layer II, 112/128 kb/s, joint stereo, 48 kHz sampling, Lines 1 and 2). You can use any other dual line Layer II Quick Configuration for different sample rates or lines.
CVA 3 CSD 7; EBR A	Load Quick Configuration 7 (G.722, 56/64 kb/s).

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 & CI1 & TS1)	Execute VA2 if timer 1 expires.
CEA VA2 +(CD2 & FRAMED & TS0 & CI1)	Execute VA2 if call framed, second line connects and timer 0 expired.
CEA VA3 +(CD1 & !FRAMED & TS0 & CI1)	Execute VA3 if line 1 did not frame ant timer 0 expires.

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 multiple line configuration using H.221 BONDING is loaded.
If no other line connects and the CDQPrima does not frame within 20 seconds, a single line Layer II configuration is loaded and a second 5 second timer is started.
If a second line connects, a 2-line Layer II configuration loads.
If the CDQPrima does not frame on the first line, a G.722 configuration is loaded.
1. NOTES: H.221 will take up to 20 seconds to frame. single and 2 line calls will take up to 25 seconds to frame, and G.722 can take up to 30 seconds to frame.
2. Due to the timers used, the calling CDQPrima must use an autodialer or a speed-dial.

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.