ZyXEL P-2802HWL-I1 User Guide - Page 152

Chapter 10 Voice 10.15 PSTN Line ("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. 1 When the ZyXEL Device does not have power, the phone(s) connected to the PHONE port(s) can still be used for making PSTN calls. Only one phone can be in use at a time. You can also use the PSTN Line screen to specify phone numbers that should always use the regular phone service (without having to dial a prefix number). Do this for emergency numbers (like those for contacting police, fire or emergency medical services). 10.16 PSTN Line Screen ("L" models only) Use this screen to set up the PSTN line you use to make regular phone calls. To access this screen, click VoIP > PSTN Line > General. Figure 84 PSTN Line > General 152 P-2802H(W)(L)-I Series User's Guide