xfone 018 phone service and Linux

[Arie Skliarouk]

Hi,

Recently I discovered an VoIP phone service by company xfone:
http://www.018.co.il/mpa.asp

>From what I understood, they provide you with hardware phone that is
connected to regular internet line (preferably with them as the ISP). They
also provide an PC client for windows that supposedly allows you to call
landlines and mobiles phones in Israel and over the world using your phone
account (similar to skype).

Can someone confirm my understanding?

Is the PC client an regular SIP softphone?

How do they solve the latency problems inherent to any internet connection?

-- 
Arie
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