*# Duration
This parameter is extended # * and sound transmission time. In some systems, these two codes must be set longer than the numeric code, and this function is needed. However, if the launch to * or # tone, duration and intercom opportunities will code set up "the first digital time were compared, a long time and using two.
Range- 10～1000 ms
- Sample 1： "DTMF rate" is set to 10 digits per second (duration is 50 milliseconds). "* And # tone" is set to 500 milliseconds. Thus, the actual length of "* and # sounds" is 550 milliseconds. However, if the launch starts with * and # sounds, the intercom compares the duration of the pitch with the "first digit time" and uses the longer one of the two.
- Sample 2： "DTMF rate" is set to 10 digits per second (duration is 50 milliseconds). The first digit time is set to 100 milliseconds. "* And # tone" is set to 500 milliseconds. Therefore, the actual number of the first digit * or # is 550 milliseconds.