If you are experiencing trouble with your cell phone while calling SEMS, please note the following:
Cellphone users that are experiencing problems when calling or acceptingincoming calls from SmartFindExpress should contact their cell phonecarriers to activate Dual-Tone Multi-Frequency (DTMF) tones.
Dual-Tone Multi-Frequency (DTMF), better known as touch-tone, is a system of signal tones used in telecommunications.
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