Anonymous (not verified) -
Friday, March 30, 2007 - 13:24
.>> Switching from 1xRTT to EVDO is not automatic
True, because the service provider’s network controller for EVDO is not the same server as the network controller for RTT.
What the modem “sees” at the cell site drives a lot of this process:
First, the modem will prefer to use EVDO. It will try to register with the EVDO network controller unless EVDO is unavailable. If the EVDO signal is too weak (or doesn’t exist, or becomes too weak), the modem will try to register with the RTT network controller.
Since the modem prefers EVDO… If the modem is instead using RTT it is assumed that the modem is using RTT because EVDO is unavailable. Assuming this, it would make no sense for the modem to try sometime later to contact an EVDO network—after all, it tried to do that once already and failed.
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.>> Switching from 1xRTT to
.>> Switching from 1xRTT to EVDO is not automatic
True, because the service provider’s network controller for EVDO is not the same server as the network controller for RTT.
What the modem “sees” at the cell site drives a lot of this process:
First, the modem will prefer to use EVDO. It will try to register with the EVDO network controller unless EVDO is unavailable. If the EVDO signal is too weak (or doesn’t exist, or becomes too weak), the modem will try to register with the RTT network controller.
Since the modem prefers EVDO… If the modem is instead using RTT it is assumed that the modem is using RTT because EVDO is unavailable. Assuming this, it would make no sense for the modem to try sometime later to contact an EVDO network—after all, it tried to do that once already and failed.