Hi Marius,
The problem appears to be gone now, so I'm a little embarrassed in having asked. I'd have deleted the question, but couldn't figure out how. I worked with ATT, but they couldn't find a problem. If it were a shared-resource slow-down or a programmed slow-down during off-peak hours or something, they probably wouldn't mention that unless they were forced to. Lol. In any case, the problem doesn't appear to be on NXP's end. Thanks for your response.
Ted