Chapter 11 Voice
Table 76 Phone Book > SIP Prefix
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Clear | Click this to erase all the SIP prefix entries. |
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Cancel | Click this to set every field in this screen to its |
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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.
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
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