The reason nobody is talking about new rates is because no new rates have been agreed *YET*.
The commitment made by those present was to review rates downwards. The next couple of months are going to involve a lot of meetings and negotiations. The goal (from both industry and ICASA) is to have a plan by 31 Dec. ICASA would like to see implement of that plan from 1 Feb 2009.
It would be naive for anyone to think that an entirely new termination rate regime would be casually agreed by a few representatives in the space of a 1-hour meeting, without the companies in question examining the figures, the effect on their businesses, getting board approval, etc.
The reason why operators may want to see lower interconnect tariffs? Simple: ICASA is going to force rates down. If operators negotiate a rate that appeases the public, the minister, etc, they only need to reduce rates sufficiently to make people happy. If operators fail to negotiate reduced rates, there is a very real risk for them that ICASA will dictate a punitive rate regime.