There's a lot going on in Dollet that you don't realize.

You hit the beach, and the first team is looking for a information network cable to tap into.

A new term is added to the help menu. Explaining that most countries don't communicate with each other because of the mysterious radio interference. They only suspect it has something to do with the moon. Anyways, only short range transmissions are possible. That's why Selphie has to relay messages on foot.

When you cross the bridge, you rescue Dollet soldiers from monsters.
Another new term is added to the help menu. Monsters. It actually tells you at this point that monsters rain down from the moon during a lunar cry. So all the monsters you are fighting are ones that have bred on the planet since the last lunar cry. Some animals are mutated as well by the strange energy.

The Dollet soldier wonders what Galbadia wants with the Communication tower. He said he used to play in it as a kid, but now it's infested with monsters.

We don't learn more until Disc 3 that the radio interference is actually the powerful seal on Adel's Tomb. But I suspect this was a revision, and that the writers were originally going in a different direction.

Because there's a theme here that countries are seeking connection.
Ellone's power is literally called connection. See?