Can I Receive Incoming Pstn/Isdn Call Through P2602Wnli- 6Xa - ZyXEL Communications P-2602HWNLI Support Notes

P-2602HWNLI Support Notes

Can I receive incoming PSTN/ISDN call through P2602WNLI- 6xA?

Yes, P2602WNLI-6XA has a line port for connecting a PSTN/ISDN line. Thus enable you to receive incoming
PSTN/ISDN calls.
Can I make an outgoing PSTN/ISDN call through P2602HWL – 6xC?
Yes, P2602WNLI-6XA allows you to make outgoing PSTN/ISDN call via a prefix number that is defined in the
configurable lifeline table. It allows you to store up to 9 pre-stored numbers. If P2602WNLI-6XA lost power it
will by pass to PSTN line to allow you to call out as you where on regular PSTN phone.
VoIP FAQ
What is Voice over IP?
Voice over IP is an emerging technology based on open standards of IEEE, fundamentally the Internet Protocol
that allows voice data to travel across the Internet. There are many methods to use this technology, the most
common and well known are SIP, and H.323.
How does Voice over IP work?
Basically VoIP is a technique to send voice information in digital form in discrete packets over digital network
rather than by using traditional circuit switch (PSTN). To do so we will need an analog to digital converter on
sender side to translate the voice (analog signal) to digital than transmit it, and on the receiver end it will also
need an analog to digital converter to covert the digital signal back to analog to the person being called can
heard the voice.
Why use VoIP?
Traditionally telephony carrier use circuit switching for carrying voice traffic. As circuit switching is designed
to carry voice and it does it very well. Than why use IP for voice? As broadband booms, and technology
evolve. People now want to communicate through various way not just voice such as email, instant messaging,
video and so on. Traditional telephony can not evolve as quickly as the demand and develop new feature on
circuit switch takes much time and money. IP is an already exist standard and many type of service already
runs on IP, by using IP as a platform integrate service is now possible and low cost where traditional circuit
may take long time to achieve.
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