Nextel push to talk6/16/2023 ![]() ![]() The network routes the packets to the phone (or phones) of the person (or group) you are calling.If it is a group call, the network duplicates the digital voice packets for each phone in the group. The network then determines if it is a one-to-one or a group call.The network determines that this is a dispatch call (Direct Connect) instead of an interconnect call (a normal cell phone call).Your phone establishes a session with the Nextel iDEN-based network.You hit the Direct Connect button, which is configured with the number(s) of the person (or group) you are calling.When you make a Direct Connect call to someone, here's what happens: This person (or group) must use Nextel's service also. ![]() To enable Direct Connect, Nextel configures your phone to use the dispatch call service to reach the person or persons you specify. This way the system knows which direction the signal should be traveling in. The listener then presses their button to respond. PTT requires the person speaking to press a button while talking and then release it when they are done. Direct Connect relies on the proven technology of Push To Talk (PTT), commonly used in dispatch radio systems. A normal cell phone call uses two separate frequencies, one to send and one to receive, for each call while a Direct Connect call uses only a single frequency. The digital two-way radio service uses a half-duplex signal. Data services ( Wireless Web and private networks).Digital two-way radio (one-to-one and group) - This is the dispatch call capability.Nextel has purchased a large segment of these frequencies in a significant number of the national and international cellular service markets. It uses the 800 MHz portion of the radio spectrum assigned to specialized mobile radio (SMR) service. This network is based on Motorola's Integrated Digital Enhanced Network (iDEN) and makes Direct Connect possible. Nextel is unique among service providers because it has an entirely separate special cellular network that has its own frequencies and equipment in addition to the normal cell network shared with other providers. This makes Nextel a very popular provider for companies with a workforce that can be spread out, such as construction work. You can even specify a group of Nextel users (up to 100) that you can connect to all at once, similar to a dispatcher's radio like police or taxi companies use. This service is typically free as long as the other user is in the local coverage area. Nextel phones offer a service called Direct Connect that allows you to push a single button and connect with another Nextel user.
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