Once "Hello's" were exchanged, a lot of "meat" started coming over those communications channels, so the whole Solar System community was caught up in discussing what came next. A lot of what got talked about were specific trade deals. Basically, each time Earthlings or Mirondians expressed interest in a particular possible project, it was assigned to a communication channel. Channels One and Two were kept open for general discussions. The most discussed project early on was where the Mirondians should set up their "show room." From the Solar System point of view there were several conflicting desires:
Defense considerations and access by the Solar System community ruled out Earth and the Moon. Intense radiation and a deep gravity well ruled out moons of Jupiter. It was finally decided that an otherwise nondescript asteroid in the Asteroid Belt between Mars and Jupiter was the best choice from the Solar System perspective. This choice was passed on to the Mirondians. They first asked if something in the Neptune orbit range might be better, but after the next exchange agreed with the Solar System choice. "We hadn't given good consideration to the current state of your propulsion technology." they explained.
As the Earth scout ships approached the Mirondian ship, the Mirondians transmitted back what they considered acceptable protocols for the scout ships' approach.
"We would prefer to center our contact on the showroom." they explained, "Come close for a little while. We will scan your ships and you can scan ours. Then please move away. Come close to us at the 'show room', not at our mother ship." It sounded pretty reasonable, so that's what the military did. They made a passby with the scout ships, then had four of them shadow the mother ship, but maintaining a respectful distance.
It took about a month for the "show room ship" to detach from the mother ship, and another six months to dock at the asteroid. Then, it was like <blip!> -- just hours -- and the Show Room was open for business. The Earth delegation was caught flat-footed, they were expecting the aliens to take at least six months to get the show room installed and prepped after their ship reached the asteroid. The "blip" construction ability was just part of the amazing alien technology. The official Earth delegation launched, and arrived six months later. While they were headed there, dozens of other ships from all over the Solar System community, including more from Earth, launched and made their way to the Show Room. The Show Room was going to be a busy place, indeed! And all the while the ships were approaching, the communications lines hummed.
More Mirondian-compatible transceivers were built -- once the concept was understood, they were cheap and easy to build, and it wouldn't be long before they were valuable for all sorts of Solar System communications needs. Even if the Mirondians were to vanish before a single trade was transacted, they had started a communications revolution in the Solar System. Given how easy it was to make transceivers, it was only weeks before the government gave up on trying to regulate communication with the Mirondians. They were Solar System Superstars. Millions of people wanted to talk to them, and there was plenty of bandwidth to do so. The government decided to let the Mirondians handle their own "fan club problems" -- the government would monitor, not regulate.
On the converse side, one of the things that took a little while for the Solar System community to comprehend was how fascinated the Mirondians were with planet Earth as a whole. The rest of the Solar System was ho-hum to them, but when they started talking about Earth, they waxed poetic. They would say things such as, "A world with nine billion people, and that is thickly covered with life from pole to pole. You have no idea how rare that is in our part of the galaxy!" This interest showed up in their trading, too. Earth traders quickly discovered that tours to various Earth sights were a hot commodity to the Mirondians, and something no other part of the Solar System could match in popularity.
Solar System researchers went back to the Mirondian encyclopedia they had downloaded over the text channel and did their own research. They reported, "Most settled planets Mirondians know about are Mars equivalents -- planets or moons with mildly life-hostile environments that have been lightly terraformed so that their inhabitants can live underground or in domed cities. Planetary populations tend to be in the one-to-ten million range. By those standards, Earth is a rare, primordial jungle planet. No wonder they are so curious."
The value of the trade conducted was simply enormous. It seemed like anyone who got any sort of trading deal completed with the Mirondians came out a billionaire, and it seemed like everything that was traded for was of "potato magnitude" in its potential effect on Solar System culture. (the potato was one of the wonders that came to the world from South America after Columbus discovered it. Who hasn't eaten french fries? Who can imagine a world without them?)