ZyXEL P-2812HNU-F1 User Guide - Page 233
The FXO Screen L Models Only, Technical Reference
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Chapter 16 VoIP 16.9 The FXO Screen ("L" Models Only) With PSTN line you can make and receive regular PSTN phone calls. Use a prefix number to make a regular call. When the device does not have power, you can make regular calls without dialing a prefix number. When the Device does not have power, only the phone connected to the PHONE port1 can be used for making calls. Ensure you know which phone this is, so that in case of emergency you can make outgoing calls. Use the FXO screen to set up the PSTN line you use to make regular phone calls which do not use the Internet. To access this screen, click VoIP > FXO. Figure 108 VoIP > FXO Each field is described in the following table. Table 68 VoIP > FXO LABEL DESCRIPTION Pre-Fix For FXO Outgoing Call Pre-Fix Number Enter 1 - 7 numbers you dial before you dial the phone number, if you want to make a regular phone call while one of your SIP accounts is registered. These numbers tell the Device that you want to make a regular phone call. Voice Features Active G.168 (Echo Cancellation) Select this if you want to eliminate the echo caused by the sound of your voice reverberating in the telephone receiver while you talk. Active VAD (Voice Active Detector) Select this if the Device should stop transmitting when you are not speaking. This reduces the bandwidth the Device uses. Apply Click Apply to save your changes. Cancel Click Cancel to restore your previously saved settings. 16.10 Technical Reference This section contains background material relevant to the VoIP screens. P-2812HNU(L)-Fx Series User's Guide 233