Maximum Ring Wait (Seconds)

Parameter group

Application Server Interface

Access level

Admin

Possible values

0 through 30

Defaults

15

Explanation

Specifies the maximum amount of time a voice application waits for a ringback tone after it has sent a digit string, when the application state table is running a Dial, MakeCall, or TransferCall action.

The value of Maximum Ring Wait is used if the state table action Ring Wait parameter is set to its default value of 0. The state table action Ring Wait parameter value is used if its value is greater than 0, whatever the value of the Maximum Ring Wait parameter.

If the state table action parameters Ring Time and Ring Wait are both set to 0, the action returns the Succeeded result immediately after it has sent the last digit in the digit string (that is, the action does not wait for any more activity on the channel). This action is known as a blind dial, blind makecall, or blind transfer.

This information is summarized in Table 1.

To guarantee detection of ringback tone, the value for Maximum Ring Wait must be at least twice the ringing cycle time. For example, if the ringing cadence is 1 second on, 3 seconds off, set Maximum Ring Wait to 8 seconds or more.

Note: When using the U.S./Canada Faster Transfer Call Progress Tone template, Blueworx Voice Response returns a Succeeded result when the ringback tone frequencies are recognized; it does not wait to recognize the cycle time.

Table 1. How Ring Time and Ring Wait Parameters Affect Ringback Tone Detection.
This table shows how different values of the Ring Time and Ring Wait state table action parameters affect Ringback Tone Detection for any value of the Maximum Ring Wait system parameter.
System parameter	State Table action parameter		Result
Maximum Ring Wait	Ring Time	Ring Wait	Result
Any value	>0	0	Use Maximum Ring Wait value
Any value	Any value	>0	Use Ring Wait value
Any value	0	0	Action returns the Succeeded result immediately after sending the last digit in the digit string