I have a strange problem. I have a simple system to record delivery times in a database. The delivery man just has to call a certain number, listen to the message then dial the delivey code (each delivery has a different code).
I used PHP to script and it seems to work fine. But I have problems whith french SFR cellphones. Numbers are not recognized correctly. some are missing, some are repeated while on the cellphone, it looks good.
I tried it myself and seen the problem but I have no idea where it comes from and how to solve it.
any idea ?