DTMF detection
TopView supports access codes and alarm acknowledgement using the phone keypad. This key press
sends a DTMF code back to TopView. The following section provides information to improve DTMF/tone
detection.
Cellular signal
Ensure that you have a good cellular signal. A poor signal is more likely to have DTMF issues.
o
Status > System Status > Trunk status
o
See how many bars you have for “Status”
DTMF mode
The default DTMF mode is rfc2833 which is recommended for most users. But you can try the other
options to see if you get better DTMF detection
•
Gateway > VOIP Settings > SIP Settings
•
DTMF mode. Default is rfc2833
Turn off keypress sounds
–
Mobile device
Some people report that keypress sounds on a mobile device may be picked up by the phone speaker
and disrupt correct DTMF detection.
On most phones, go into the phone app settings and turn off audible keypress tones.
Turn on/off VoLTE on mobile phone
Voice calls on your mobile phone can use
a traditional voice network or the cellular carrier’s LTE
network (Voice over LTE). VoLTE will provide superior quality as long as your LTE signal is strong.
Try to turn VoLTE on or off on the mobile device to see if you have better DTMF tone detection.
This may also be called “Advanced calling with LTE” within your phone’s se
ttings.
Summary of Contents for TG Series
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