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A typical relay service conversation. A telecommunications relay service, also known as TRS, relay service, or IP-relay, or Web-based relay service, is an operator service that allows people who are deaf, hard of hearing, deafblind, or have a speech disorder to place calls to standard telephone users via a keyboard or assistive device.
Many digital cell phones are compatible with TTY devices. [11] [12] Many people want to replace TTY with real-time text over IP (RTT), which can be used on a digital cell phone or tablet without a separate TTY device. [13]
Whether you’re an older adult shopping for a cell phone or passing the task on to a friend or family member, there’s more to finding the right option than simply choosing a model with a big ...
Verizon.com. Verizon Communications Inc. 2011. Archived from the original on 29 June 2011 Personal Communications Services (PCS) A new generation of wireless-phone technology that introduces a range of features and services surpassing those available in analog- and digital-cellular phone systems.
Android phones and iPhones can be made senior-friendly, but the Smart3 arrives that way: It's a phone made specifically with seniors and their specific needs in mind.
Best overall flip phone LIVELY Jitterbug Flip2 - Flip Cell Phone for Seniors - Not Compatible with Other Wireless Carriers - Must Be Activated Phone Plan - Red
In the FDMA and TDMA systems, frequency planning is an important consideration. The frequencies used in different cells must be planned carefully to ensure signals from different cells do not interfere with each other. In a CDMA system, the same frequency can be used in every cell, because channelization is done using the pseudo-random codes.
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