I don't know the technical details or 018. I do know that 012 provides you with a sip adapter that is plugged between the bezeq/hot modem and your PC/ordinary phone. It could be that that adapter reserve some BW for the sip packets. In any case, my experience is that both 750K ADSl/cables is sufficient for a good quality phone service, with a lightly usage for internet and phone. The sip adapter I initially had was made in the US. I assume they use a US proven technology. My current sip adapter is made by AudioCodes. 012 claims that the sip adapter they provide should work with any ISP. I had two ISPs, and in my case their claim is justified. There is also a rumor that bezeq's new generation network uses sip over copper for the phone services.
--- On Sat, 3/7/09, Arie Skliarouk <sklia...@gmail.com> wrote: > From: Arie Skliarouk <sklia...@gmail.com> > Subject: Re: xfone 018 phone service and Linux > To: "linux-il" <linux-il@cs.huji.ac.il> > Date: Saturday, March 7, 2009, 11:21 PM > Hi, > > On Thu, Mar 5, 2009 at 13:54, Gilad Ben-Yossef > <gi...@codefidence.com>wrote: > > > Arie Skliarouk wrote: > > > > > > > > How do they solve the latency problems inherent to any > internet connection? > > > > The round trip time to a well connected (read: 0% > packet loss) server in > > Israel from an Israeli ISP, where Israel here is > defined as "connected to > > the IIX", is under 50ms. > > > > On a 150kbit upload ADSL upload of a 1500 bytes packet > takes about 85ms. To > send out the VoIP packet would take another 85ms (on > condition that you have > a really good QoS). This causes latency of 85-170ms with > jitter 85ms. The > VoIP speech (SIP protocol) has a lot of skips and is > unacceptable. > > Theory aside, I would like to hear first-hand experiences > of people with 018 > before I commit for a year of phone service with them. > > -- > Arie > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il