New Zealand connection, was Fw: Re: [libreoffice-users] now can Purchase a NA-DVD

users
#21

I live in the "county seat" of Chemung County in New York State. We are a city, but not a big one, unlike the "county seat" 50 mile from here. They are 10 time bigber than ours.

There is a program where the government is pushing broadband access for most of the US users, but it does not mean that access is cheap.

What I would love to see is fiber to the homes instead of fiber to a "node" somewhere in the 4-6 block area and then have coax to the home. That is what here for our cable-modem system. Our DSL system goes through the phone line, but it can be more expensive. They want you to have a "regular" non-digital phone line with them before you are able to get their service. So even if you want a digital-phone service, you will be required to have a regular one as well. I have my broadband downloading [only 120 MB/s uploading do to cable issues], digital phone, and TV digital cable service from the one company. It cost less this way, but is still cost a lot out of my budget.

I would love to see a cheaper solution in my area. With an inexpensive broadband service, I could add a third-party digital phone service and also watch most of my TV shows via the streaming video services [free mostly, but paid sometimes]. I could cut my budget for those services down to about a third of what I am currently paying.

What we need is the political boost for allowing competition in our market instead of having one cable company and one phone company. There is no competition to keep the rates down.

#22

The lag time is due to the equipment, not the "travel time".

I have both standard and digital cable boxes in my place. If I have both TVs on the same channel, the digital TV has a 2 second lag for audio and video than the non-digital TV's box. That is do to the time it takes to convert the TV channel to the digital system and then the conversion back to the coax cable going into the digital TV's coax input. Just in that simple case, there is a lag due to the equipment involved.

As for the time lag I gave you, that is the lag time given in my course in telecommunication and communication networking. The problem is the equipment's lag time doing the processing of the signal to be transmitted and then the process of converting the signal back to the original format.

#23

There are digital filters and delay's which 'could/should?' be added
to these devices to compensate for the lag-time of one signal.

It's similar to what they use in very large Audio PA systems when
having very long cable runs.

I even notice it when I go to my doctors, the surround speakers have a
few hundred ms delay over the TV speakers which is quite disturbing.

The mathematics involved however to 'auto-sense' something like that
however is quite complex so even on YouTube videos for Sports like
NASCAR et el.... I have to always adjust the speach delay manually in
mplayer as it fluctuates.

It is quite an interesting scientific phenomenon though, signal
delay/lag and propagation through different mediums.

Regards,

Kaya

#24

webmaster-Kracked_P_P wrote:

Also the "lag time" for satellite can be up to 15 seconds from ground station through a satellite to the ground station.

Oh dear: the speed of light must have decreased by a factor of 63 since I was at school! Has someone told the scientific community?

(The delay on the double journey to and from a geostationary satellite is about a quarter of a second.)

Brian Barker

The lag time is due to the equipment, not the "travel time".

I have both standard and digital cable boxes in my place. If I have both TVs on the same channel, the digital TV has a 2 second lag for audio and video than the non-digital TV's box. That is do to the time it takes to convert the TV channel to the digital system and then the conversion back to the coax cable going into the digital TV's coax input. Just in that simple case, there is a lag due to the equipment involved.

As for the time lag I gave you, that is the lag time given in my course in telecommunication and communication networking. The problem is the equipment's lag time doing the processing of the signal to be transmitted and then the process of converting the signal back to the original format.

If equipment is imposing such a significant delay, then there's something seriously wrong. As for the difference in TV, I doubt you're seeing much analog to digital conversion. These days, the source is usually digital and has to be converted to analog for analog broadcast. I don't know how that course arrived at such a figure, as I have certainly never heard of it. If it was real, a lot of common services wouldn't work. For example, when trans-Atlantic calls first started going via satellite, the satellite channels were paired with cable channels, so that only one direction would go via satellite, so as to keep the echo delay to manageable levels (< 1/3 sec) . Otherwise, the echo would interfere with speech.

#25

The connection we use in the northern hemisphere is different from
that in the southern hemisphere;
            using satellites up here came after the cables were installed.
                [laid by U.S.-Britain ca. '40s]

       -> when Steve Jobs had the idea of connecting the world's
communication, he used the existing cables, etc. ...
            why there cannot be a satellite for the southern hemisphere
which speaks with the northern one [??? - is the $64,000 question :wink: ]

       BUT those in the southern hemisphere should be better off than us up
here if either (1) these hackers are able to somehow knock out the
satellite and/or if (2) some asteroid [or whatever] knocks it out.

Hi :slight_smile:

#26

anne-ology wrote:

             why there cannot be a satellite for the southern hemisphere
which speaks with the northern one [??? - is the $64,000 question;-) ]

Actually, most satellites used for communications are geostationary and sit over the equator. Whether they look north or south depends on which way the antennas are pointed. However, for the past several years, fibre optic cables have taken over most of the connections that had been carried via satellite.

#27

Are you trying to say that Steve Jobs had anything to do with current world
communication system? Internet maybe?

#28

Russell Wilson wrote:

try starting with something like 1/4 population of New York, 1000 times its surface area, and 1/4 of 1% of its financial worth

First off, I was thinking of the international trunks. Analog systems are so obsolete that it would cost more to maintain them then to replace. However, even domestically, the same still applies. I don't know if you're referring to New York City or New York State, but even assuming the city, Canada has about 4 × the population, or 16 × that of NZ, but the area of almost 10 million sq Kilometres is close to 40 times that of New Zealand, yet the analog phone system is long gone here.

BTW, I've worked in the telecommunications industry for most of my career and it's been over 30 years since the last time I saw an analog system. New Zealand would *REALLY* have to be a back water country to still be using an analog phone system.

Well just on the outskirts of NZ largest city I am 500m from the roadside exchange box thing. The analogue line went out when it rained and ADSL was next to useless. The national fibre trunk of the second largest telco goes past the door but they won't tap it for me. I have a 19km line of sight WiMax link now, also on another property that has a 30km WaiMax relay. Voip on both and stick it to the telcos. The national fibre rollout sounds good but I doubt it will reach me.
Steve

#29

Steve Edmonds wrote:

BTW, I've worked in the telecommunications industry for most of my career and it's been over 30 years since the last time I saw an analog system. New Zealand would *REALLY* have to be a back water country to still be using an analog phone system.

Well just on the outskirts of NZ largest city I am 500m from the roadside exchange box thing. The analogue line went out when it rained and ADSL was next to useless. The national fibre trunk of the second largest telco goes past the door but they won't tap it for me. I have a 19km line of sight WiMax link now, also on another property that has a 30km WaiMax relay. Voip on both and stick it to the telcos. The national fibre rollout sounds good but I doubt it will reach me.

I was referring to trunks and phone systems. There are still plenty of analog "POTS" lines in use, even in Canada. At the other end of your analog phone line is likely a digital phone exchange. From that point on, the entire phone network is digital and has been for many years. In my own home, I have a standard phone, which is connected to a voice over IP (VoIP) box which connects to my provider over the cable TV network. The call quality is better than it was when I connected to the central office over "twisted pair".