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Prestige 2602HWNLI-D7A Support Notes
All contents copyright (c) 2007 ZyXEL Communications Corporation.
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ISDN Lifeline Application Notes
Usage of ISDN Lifeline
By using the ISDN lifeline function, you can make and receive regular ISDN phone calls in coexistence with
VoIP service on the same set of phone. This can be done by simply assigning a prefix number (by default the
prefix for ISDN dial out is 0000 and can be change to value you wish to) and dial this prefix to switch over
toISDN line than dial the ISDN number as normal.
Furthermore, when the P2602WNLI–67A experience power loss such as in case of earthquake and other
natural hazard that cause power loss, it will automatically switch to ISDN line and you can dial a regular phone
number without dialing a prefix number.
This can be applied on the emergency situation such as for contacting police, fire or emergency medical
services when is powerless situation. On the following section, it tells you how to configure lifeline under
P2602WNLI–67A WEB GUI.
Lifeline configuration
To configure lifeline in P2602WNLI, click on VoIP -> ISDN Line to display the following screen.
You can specify a prefix number in prefix field. This number will be used to switch from VoIP to ISDN system
when you wish to make a call to ISDN destination. For example, when you want to dial out to a SDNdestination,
you first pick up the phone, and you will heard a dial tone, than you push in the prefix number as defined in efix
field in this case it will be 0000, than the device will switch over to PSTN line. At this moment you will hear