CapTel 2400i: Keypad Lights
The CapTel keypad lights up for easy dialing in dark environments. You can set the keypad lights to go off when your CapTel is not in use. When set to “off ” the keypad lights will go off after approximately 30 seconds of non-use. The default setting is Keypad Lights On.
Settings → General Settings → Keypad Lights On