Zyxel-communications U-336SA Manual de usuario descargar pdf (Pagina 152)

138 Diagnostics & Troubleshooting

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 &D

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 auto-

answer, 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.

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Zyxel-communications U-336SA Manual de usuario Pagina 152