ZyXEL Communications 2602HWL-DXA 用户手册

 

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 Yes, P2602HWL - 6xC supports REN (Ringer Equivalence Number), it can determine the number of devices 

that is connected to the phone line.   P2602HWL – 6xC can support up to three devices per telephone port. 

Yes, P2602HWL has a line port for connecting a PSTN line.   Thus enable you to receive incoming PSTN calls.  

Yes, P2602HWL – 6xC allows you to make outgoing PSTN 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 P2602HWL- 6xC lost power it 

will by pass to PSTN line to allow you to call out as you where on regular PSTN phone. 

VoIP FAQ 

 

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 method to used this technology, the most 

common and well known are SIP, and H.323. 

Basically VoIP is a technic 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. 

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