Check out the other entries there are. You'll find that most are similar if not identical when you look at the strings that actually are used to initialize the modem.
Hence you can probably use the strings of a similar Zyxel modem model without any trouble - just try!
Or, write your own using your Zyxel manual to find out the meaning of the AT codes. Then you can sign your e-mail: Your Modem Expert ;-)
