Samsung SPH-M820 User Manual (user Manual) (ver.f5) (English) - Page 73
DTMF Tones, TTY HCO - problems
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Settings Your device is compatible with select TTY devices. Please check with the manufacturer of your TTY device to ensure that it is compatible with digital cell phones. Your device and TTY device will connect via a special cable that plugs into your phone's headset jack. If this cable was not provided with your TTY device, contact your TTY device manufacturer to purchase the connector cable. To turn TTY Mode on or off: 1. Press > and tap > Call settings > TTY. An informational message displays. Note: If TTY mode is enabled, the audio quality of non-TTY devices connected to the headset jack may be impaired. 2. Select Yes to continue or No to cancel. 3. Touch TTY Off to turn TTY mode off. - or - Touch any of the following to enable the feature: ● TTY HCO, TTY VCO, or TTY Full. WARNING: 911 Emergency Calling Boost recommends that TTY users make emergency calls by other means, including Telecommunications Relay Services (TRS), analog cellular, and landline communications. Wireless TTY calls to 911 may be corrupted when received by public safety answering points (PSAPs), rendering some communications unintelligible. The problem encountered appears related to software used by PSAPs. This matter has been brought to the attention of the FCC, and the wireless industry and the PSAP community are currently working to resolve this. DTMF Tones This option sets the length of Dual-tone multifrequency (DTMF) signaling tones. 1. Press > > DTMF tones. and tap > Call settings 2. Tap Normal or Long. 2C. Settings 59