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P-2302HWUDL-P1 Series User’s Guide
159
CHAPTER 12
PSTN Line
This chapter applies to “L” models only. Use this screen to set up the PSTN line used to make
regular phone calls. These phone calls do not use the Internet.
12.1 PSTN Line Overview
With the Public Switched Telephone Network (PSTN) line, you can make and receive regular
phone calls. Use a prefix number to make a regular call. When the ZyXEL Device does not
have power, you can make regular calls without dialing a prefix number.
You can also 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).
" When the ZyXEL Device does not have power, only the phone connected to the
PHONE 1 port can be used for making calls. Ensure you know which phone this
is, so that in case of emergency you can make outgoing calls.
12.2 PSTN Line Screen
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.