When I try to log onto my isp through the T-Mobile csd service, the connecting screen hangs for a long time before giving me an error message. Anyone know what type of init string I need to input?

My isp is a very small company with limited number of lines (thus, often times very busy, but cheap!), so I often get busy signal when I try to log in. I get around the busy signal in Windows xp by redialing continuously for about 50 times until I get connected. I believe that a similar redial for busy signal exists in the network setup screen of the Treo. However, after searching the web for init string definitions, I can not seem to get the right answer.

I would appreciate it if any knowledgeable person would enlighten me on what type of at string should be input for redial. Thanks in advance.