ZyXEL U-336R User Guide - Page 152
Dialing Problems, Data Transfer Problems
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3. Check that the DTR LED is ON, and that the AA LED flickers with each incoming ring. If the LEDs do not respond in this way, refer to your ZyXEL Modem Reference Manual. 4. Set &Dφ and auto answer, if your modem is not connected to RS232 or DTR is not ready. Problem When you receive a phone call, your modem immediately seizes control of the telephone line. Solution Your modem may be configured for auto-answering. To disable autoanswer, type ATS0=0 and press Enter with the modem in command state. Dialing Problems Problem Your modem does not dial calls. Solutions • Make sure the supplied telephone cable is connected to your modem's LINE jack and not the PHONE jack. • You are using touch-tone dialing on a line that requires pulse dialing. Change your communications software to use pulse dialing. Data Transfer Problems Problem You can make a data connection with a remote modem, but encounter frequent errors during data transfers. 138 Diagnostics & Troubleshooting