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Generating Call Progress Tones

Configuration

1. If required, customize tomes using the Transmit Cadence Pattern Configure message.

2. Configure a DSP with one of the following function types using the DSP SIMM Configure 0x00C0 message:

0x30 - Universal Tone Generation µ-Law

0x31 - Universal Tone Generation A-Law

Procedure

1. Connect the tone generator to the channel using the Connect Tone Pattern message.

A call must be active (either incoming or outgoing) for a pattern to be generated.

If you want to be notified with a Call Processing Event 0x002E message (0x21 - Tone Complete) when tone transmission has stopped, set the Generate Event Flag.

Pattern of tones and silence, such as a busy signal.
Digital Signal Processor
PCM and companding standard used in North America and Japan to compress and expand the amplitude range of a signal before and after transmission. See A-Law
PCM and companding standard used in Europe to compress and expand the amplitude range of a signal before and after transmission. See µ-Law.
Message delimiter (SS7 bit pattern - 01111110)