One day, in the office, some office mates with phones under Smart Communications network were complaining that they couldn’t call nor they’re receiving calls while in their area. However, a few steps from this area, their phones were working properly.
While passing by this area, they explained to me the situation and I was requested to call their phones. Using my Nokia E90, I called up their numbers and other numbers outside of this area. The messages were “network busy”. I went a little farther and called them up. “The number you dialed is either unattended or out of coverage area” were the answers I received. I called up the other numbers I called up earlier from their area and I got through. Something, I thought, was not right. We tried to diagnose the problem.
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