Inward DTMF Access

Note: DTMF tones are not supported on LQ SIP.

DTMF Access allows combinations of DTMF tones that are pre-assigned with specific meanings to have access to the Eclipse HX system. The Assign DTMF Codes option in Advanced Setting screen of a telephone screen allows you to set all parameters related to the DTMF-tone decoding. Each MVX-A16 Crosspoint Card provides sixteen ports. On each MVX card, DTMF Daughter boards are fitted for DTMF-tone encoding and decoding. DTMF decoding is the ability to interpret DTMF tones. DTMF encoding is the ability to create DTMF tones.

Assign DTMF codes are numerical routing codes that outside callers use to access the system. The codes initiate the specific audio paths when the system is accessed via DTMF inward access. If the [One Digit Codes] field is selected, only the ten single-digit codes [0] through [9] function as selector codes.

If the Accumulate DTMF Codes option is selected in DTMF Options, the inward DTMF stream may contain multiple routing codes, for example to activate more than one audio route/control. If this is the case it is advisable to separate the selector codes by placing a space in the source string to ensure that selector codes after the first are correctly identified.

Note: The characters used to specify a space or pause between codes may vary with the equipment calling into the Eclipse HX system. Consult the manufacturer’s instructions for details.

Specific Control codes perform specific functions, including:

  • 00 - Clear Last Entry—This code clears the paths that were activated by the last selector code entry. If [00] is entered twice, the paths that were activated by the last two selector code entries clear, and so on.

  • 91 - Send Call Signal—This code sends a call from the port to the matrix as if a call signal was sent by an external device connected to the port.

  • 92 - Disable DTMF Decoding—This code turns off DTMF decoding. This may be desirable because certain program sources may contain DTMF tones not intended to be interpreted as selector codes, and that can inadvertently reroute the audio path.

  • 99 or 099 - Clear All—Either of these codes clear all currently active talk and listen paths.

Access Prompt tones are tone sequences that the MVX-A16 sends to the user. The MVX-A16 issues the following four distinct prompt tone sequences:

  • Access Code Request—Indicates that the system is ready for an access code to be entered. If the system does not recognize the entered access codes, it repeats the access code request prompt. The number of attempts to enter the access code is limitless. The prompt consists of a low tone followed quickly by a higher tone. The sequence is quickly repeated three times.

  • Access Granted—Indicates that the system has acknowledged the access code and that access to the Eclipse HX matrix has been granted. The prompt consists of four tones, each increasing in pitch and immediately followed by a ready prompt.

  • Ready—Signals that the system is ready for a selector code entry. It also indicates that it has acknowledged the last selector code entered. The prompt consists of a single high-pitched tone.

  • Error—Indicates that an invalid code has been entered. Error prompts result from:

  • Selecting a code that is less than 10 or greater than 59

  • Selecting a code without talk or listen labels assigned to it

  • Assigning a control code before a port has been activated.