ZyXEL Communications P-2602HWLNI, Руководство пользователя, Страница: 206 / 496

Chapter 11 Voice
P-2602HWLNI User’s Guide
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11.20 PSTN Line
With the 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, 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.
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).
11.21 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 .
Figure 116 PSTN Line > General
Clear Click this to erase all the SIP prefix entries.
Cancel Click this to set every field in this screen to its last-saved value.
Table 76 Phone Book > SIP Prefix
LABEL DESCRIPTION