Rumor Mill
Nextel and Sprint's PTT compatable
The way I understand it is:
Nextel:
(from howstuffworks.com)
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 network is based on Motorola's Integrated Digital Enhanced Network (iDEN) and makes Direct Connect possible. It uses the 800 MHz portion of the radio spectrum assigned to specialized mobile radio (SMR) service. Nextel has purchased a large segment of these frequencies in a significant number of the national and international cellular service markets.
iDEN uses TDMA technology to split a 25...
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jbrown1028 said:...
Well if this is true, then I believe that some major work is ahead.
The way I understand it is:
Nextel:
(from howstuffworks.com)
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 network is based on Motorola's Integrated Digital Enhanced Network (iDEN) and makes Direct Connect possible. It uses the 800 MHz portion of the radio spectrum assigned to specialized mobile radio (SMR) service. Nextel has purchased a large segment of these frequencies in a significant number of the national and international cellular service markets.
iD
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But I think this is unlikely to happen.
southwestcomm said:
Sorry, wrong. Nextel uses their data channels for Direct-Connect. And all the carrier's could make their walkie-talkie systems interoperable. Just takes time and a lot of money to develop the gateways to support it.
That is incorrect. iDEN uses TDMA time slots for Direct Connect (DC) and Telephone Interconnect (TI). Currently is 6:1 for DC and 3:1 for TI. The NEXTEL does not use VoIP for the Direct Connect and connectivity to the Sprint network would probably be difficult (but not impossible). It would take Motorola to engineer as iDEN patents belong to them.
Here is a quote from the iDEN tutorial I posted a few months back:
A DIRECT CONNECT DISPATCH CALL IS IN...
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nextel18 said:
well remember nextel and motorola and qcom are teaming up to do a gateway to cdma carriers obvoiusly world wide but if it can happen worldwide it can happen domestically.
It will be years until NEXTEL can have deployed qchat over a broadband wireless connection.
CDMA is typicially in the US. It is not a worldwide platform so your comment about worldwide connection is flawed right out of the gate.
And for those who believe that CDMA is only a U.S. phenomena you may want to read the information coming from the CDG. It seems that Asia is CDMA's fastest growing market followed by latin America. CDMA growth is also greater than GSM's at this time.