[Asterisk-Users] VoIP over 1xRTT

[Gregory Junker]

While it's not applicable in the next ten days, WiMax/802.16 will make these
sorts of issues kinda moot. AT&T and Covad are kicking into high gear in the
next 6-18 months to roll out their WiMax services. I had been researching
the same sorts of things mentioned in this thread, including GSM/GPRS and
CDMA services, but I think I am just going to wait until WiMax is out...my
call needs are still limited to the continental US and my AT&T cell phone
still works just fine all over the country. ;)

Greg

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com]On Behalf Of
> Deon Rodden
> Sent: Monday, October 18, 2004 6:25 PM
> To: brian at bmit.net; 'Asterisk Users Mailing List - Non-Commercial
> Discussion'
> Subject: RE: [Asterisk-Users] VoIP over 1xRTT
>
>
> My concern is Sprint would consider this a threat to their "Bread and
> Butter". Why buy one of their $100/mo plans for 2000 Anytime
> Minutes when
> you can get a $50/mo data plan and use an unlimited VOIP
> carrier. Why pay
> their overpriced International rates, when you can just go
> through a VOIP
> carrier.
>
> With Verizon, I'm getting the Samsung i700 PDA phone. It runs
> Windows Mobile
> 2003, which is based off CE. I believe I found a SIP client
> for it. Using a
> wireless SD card in the SDIO slot it comes with, anytime I'm
> in range of a
> hotspot, I'll be able to go online and use the SIP client. Effectively
> turning my Cell phone into a wireless SIP phone when in range
> of a hot spot.
> Would be really nice when I'm in Australia. Also found an ssh
> client for it
> and a small roll out keyboard.
>
> I know I can get my laptop to go online through this phone,
> but I wonder if
> the phone can go online through my laptop. If so, anytime my
> laptop has
> internet access, such as from Ethernet, the sip client on the
> pda-phone
> would work. Thus turning it into a usb phone. Hehe.
>
> I love technology... Most of the time.
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Brian
> McSpadden
> Sent: Monday, October 18, 2004 5:45 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] VoIP over 1xRTT
>
> It is not always the bandwidth, you are correct. There are however
> times on the Sprint network that the bandwidth is reduced, or the
> bandwidth is zero, because it can't connect to anything because the
> network is so busy. WIth Sprint's CDMA 1xRTT network, voice and data
> share the same network, but voice is the bread and butter of the
> business, so it will get priority over data.
>
> This is why I'm saying, EV-DO (and later EV-DV) will do great things
> for VoIP over cellular networks. EV-DO (DO stands for Data Only),
> dedicates a high speed data network, more available bandwidth for
> everybody, and less latency, hence less jitter. I'm excited to see
> these developments, as I believe it will make VoIP more reliable over
> these types of networks. At the moment, there are simply too many
> variables to trust it.
>
> Brian
>
>
> On Mon, 18 Oct 2004 17:36:14 -0400, Deon Rodden
> <drodden at webunited.net>
> wrote:
> > It's not the bandwidth. I have Sprint and am switching to
> Verizon with a
> > week. When I go online through my Sprint phone, I get
> 250+ms response
> times.
> > That can not be VOIP friendly. I have clocked downloads at
> up to 130 kbits
> > per second, so the speed is ok, but the ping response times are bad.
> >
> > I've heard reports from Verizon users who get an average of
> 60-80 kbits
> per
> > second, so I 'feel' Sprint's network may be a little faster as their
> average
> > is higher, at least in my area. But Verizon is already
> doing the 2nd stage
> > rollout, which is nice and fast.
> >
> > But the latency issue will probably still be there, for
> Sprint or Verizon.
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