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Originally Posted by XBoogie
Do you think it is possible that the "Side Convenience Button" is available to be programmed for future PTT (Push to Talk) support on the Sprint/Nextel network?
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The short answer is "no" (or at the very least, "not bloody likely"). We've been told that it is on RIM's roadmap but a CDMA/GSM hybrid is a higher priority so we'll, likely, see that first ... but not soon.
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Originally Posted by XBoogie
Also, on Sprint's website it mentions that with the implementation of their new EV-DO rev A network, that high performance push to talk will be enabled! ... Does this mean that Nextel PTT will be obsolete?
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That's a big question ... there really isn't much work being done to evolve the Nextel PTT network going forward; however, it's a proven system that works well where coverage exists.
PTT on CDMA networks has been implemented using half-duplex VOIP so there's a lot of room to grow in terms of network developement, features, encoding, compression, etc.