[Asterisk-Users] VoIP over 1xRTT

[Deon Rodden]

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. 

-----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 5:19 PM
To: Tim Jackson; Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] VoIP over 1xRTT

Well, it probably depends...I think it is a great idea, but I'm just
not yet convinced that its reliable enough to deploy to an end user.
As the "Phone guys" and the " IT guys" we can put up with a lot, and
still use it, simply because we think it is cool, and know why it is
working the way it does. End users in my experience, have a much lower
tolerance. If they're in a car, they want it to work every bit as well
as a cell phone. Which, it might do, some of the time. Sprint's 1xRTT
network is very good, but during peak voice times, it is nearly
impossible to open a data session, let alone transmit real time data
over it.

Now, Sprint and Verizon are both going to be rolling out high speed
data networks based on CDMA EV-DO, which will (in threory) give up to
2.4 megabits bandwidth, with much lower latencies. That is going to be
great for VoIP. Verizon has deployed it in many areas, Sprint will
begin their rollout shortly, I believe.

Brian


On Mon, 18 Oct 2004 16:05:27 -0500, Tim Jackson <tim at angelinacounty.net>
wrote:
> I was looking at doing this in our department van for a mobile phone. So
> probably not a good idea, eh?
> 
> -Tim
> 
> 
> 
> -----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 4:01 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] VoIP over 1xRTT
> 
> It kind of works...I've done it from my notebook. I wouldn't use it
> all the time, or for anything important, but it is good for testing
> and troubleshooting customer's systems while I'm on the road. I have
> used both X-Lite and Diax, with decent success. I can't say that one
> worked better than the other in this situation. The sound was a little
> bit choppy, but it was the variable latency (jitter) that kills you on
> a connection like that.
> 
> Brian
> 
> On Mon, 18 Oct 2004 15:49:38 -0500, Tim Jackson <tim at angelinacounty.net>
> wrote:
> >
> >
> >
> > Anybody ever tried doing voice over Sprint/Verizon 1xRTT cell service?
> > 10-15KB/sec downloads/uploads with 400-1200MS latency is what I
> usually see
> > on my service.
> >
> >
> >
> > Tim Jackson
> >
> >
> > Network Engineer
> >
> >
> > Angelina County, Texas
> >
> >
> > (936)639-4827x101 office
> >
> >
> > (936)414-6723 mobile
> >
> >
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