T-Mobile has released the names of the other master agents that so far have joined its new channel program.

In June, the company announced Cellular Optimization and PlanetOne Communications as its first participants. Now, it says Innovative Communication Services, Advocate Networks, TBI and Nexlink also have joined the initiative, which pays residual commissions.

T-Mobile started talking about its nascent channel program earlier this year; it said in March it was indiscussions with nine master agents.

The wireless operator’s plans, called Simple Choice for Business, include unlimited talk, text, and data. T-Mobile said unlimited data and text messaging are available in more than 119 countries at no extra charge, with voice calls originating from those countries going for 20 cents per minute.