Canadian Telco Telus Moves All Call Traffic to the Net 250
justice0x1 writes "An article on the Tornonto Star about Canada's Telus making a large scale motion to move all call trafic over to IP caught my eye today. 'Telus will become the first dominant phone carrier in North America to make the risky transition, a move much talked about and which Telus will make happen on a dramatic scale.' Since I work in the Telus Internet Service department, it will be interesting to see exactly how this new technology fares. Seems almost premature to me, but I guess it's all or nothing with telecomunications these days; you need to get an edge on the competition somehow. Why not start by moving youre entire long distance network over to IP?"
Let's Call Mom!!! (Score:4, Insightful)
Bandwidth? (Score:5, Interesting)
Re:Bandwidth? (Score:5, Informative)
Re:Bandwidth? (Score:2)
Wow. Ogg Vorbis music files encoded at 45-kbps sound very close to the original. I think they need to use some better quality.
Re:Bandwidth? (Score:3, Interesting)
You don't really care how long it takes to encode a music file, and you can compress in chunks as large as you like. What matteres to a telephone conversation is lag, if I say something I don't want to have to wait 10 seconds for a reply. I can't record 10 seonds worth of data, compress it, and send it. I have to record something like 10ms worth (80 samples), compress this, and
Re:Bandwidth? (Score:3, Interesting)
On an Athlon XP2100+ box, I can encode Vorbis files at 9x realtime speed. You could do realtime encoding on 1/9th this amount of 'box'. OTOH, Vorbis is not necessarily optimized for speech.
Re:Bandwidth? (Score:2)
And thus serve nine customers? They have millions of customers. Should they invest in a million boxes?
Re:Bandwidth? (Score:2)
When I worked for BT the scientists could compress "normal" voice data into around 6Kbps for normal landline quality speech.
This was when the first telco-based answering services were being written, ie. your messages are stored by the Telco on a central storage platform and streamed to your phone when you need to access them.
Re:Bandwidth? (Score:3, Interesting)
Re:Bandwidth? (Score:2)
90kbps is about 150% of the standard data rate used to carry telephone calls
Re:Bandwidth? (Score:2, Informative)
There's a big difference between desirable internet traffic fl
Re:Bandwidth? (Score:5, Informative)
Using H.323 (the main VoIP standard) you can choose from a number of compression codecs, from 32kbits upwards, although there exists a couple of codecs which sound pretty good (coparable to a average analogue phone line) at 64kbit/s, to you can make the transition without effecting you capacity.
I was involved in some trials here in the UK, and (IIRC) we were using about 90kbits, and that was _crystal clear_ - the thing you most notice is that when no-one is talking, it is actually *silent* - you don't realise it until you try VoIP howe much noise is in a normal analog call.
This is fact one of the advantages of VoIP, you can have in effect variable bitrate encoding, as if no-one is talking, then you don't have any data to encode!
Re:Bandwidth? (Score:4, Informative)
E1 is 30 B channels at 64kbits/s + 1 D channel at 64kbits/s for signalisation plus 1 synchronisation and misc operator stuff at 64kbits/s. So E1 is 32*64k=2048Mbits/s.
Some operators have services for 10, 12, 15, 20 or 24 channels depending of the offert but this is simply a limit of concurrent B channels open in a 30 B channles capacity E1 line.
Re:Bandwidth? (Score:2)
Re:Bandwidth? (Score:4, Interesting)
The background white noise in an analog phone call is artificially inserted ("comfort" noise). Studies showed users were not comfortable with a "dead" line, where the static reassures them the connection is still active.
Re:Bandwidth? (Score:2)
Re:Bandwidth? (Score:2, Informative)
Try entering the term in Google, I got 540,000 hits.
Re:Bandwidth? (Score:2)
Re:Bandwidth? (Score:2)
Okay, with the disclaimer out of the way, one channel of OK quality voice can be had for about 9.6kb, a good quality one you are looking closer to 14.4kb.
Re:Bandwidth - ITU recommends G723.1 - 6.3kb/s (Score:3, Interesting)
The most widely used VoIP protocol is H.323. H323 allows negotiation of a compression CoDec. The base (worst) codec which must be supported is G.711 (64kb/s - this is what goes down an ISDN line - this is regarded as lossless digital encoding).
Latency is dealt with by using QoS. I make calls from Australia to Europe through a VoIP carrier at a cost of about 3cents/minute. The round trip delay appears less than 0.2 seconds. The recommended CoDec is G.723.1 which is 5.3
New error messages (Score:5, Funny)
Re:New error messages (Score:5, Funny)
RFC 3261 [rfc-editor.org] Section 21.4.5 clearly states:
I see them every day at work if I misdial from my Cisco [cisco.com] 7960 [cisco.com].
Made me laugh the first time; now it just makes me cry.
IP != The Net (Score:2)
Hence the IPCop gateway on 24x7.
Re:IP != The Net (Score:5, Informative)
For the VoIP/PSTN imparied, VoIP traffic can be optimized (that's compressed) down to 8K (or more, but a cost of clarity) as opposed to 56K for traditional circuit switched telephony traffic.
And yes I have worked with the technology.
Re:IP != The Net (Score:2)
The article title implied the traffic would be on the public Internet instead of Telus' own network.
And yes, I've worked with the technology too.
Convincing my firm to get rid of their 20 year-old Rolm switch is a different story.
Re:IP != The Net (Score:3, Informative)
The article *title* "Canadian Telco Telus Moves All Call Traffic to the Net" implies that Telus will be using the public Internet.
The *article* says several things but doesn't clearly state for non-technical readers that the network that Telus will be using for this VoIP service is their *private* network. The article talks about the poor quality of previous Internet phone call implementations without qualifying that assertion with something like "but
Re:IP != The Net (Score:3, Informative)
Re:IP != The Net (Score:2)
Case in point: Last year Worldcom found some sort of glitch in their cisco gear and that in turn crashed the border routers at several other ISPs. The fun happened when Group Telecom's routers went down hard taking their voip system with it.
No internet and no means of calling their helpdesk to see what is going on.
Re:IP != The Net (Score:2)
Hmm.... (Score:2, Insightful)
Just wait for the Slashdot effect to strike...., then you an have dropped packets, shift in time and all sort of digital noise... No need to add analog noise to it.
And So we move closer to integrated communication (Score:5, Interesting)
Re:And So we move closer to integrated communicati (Score:4, Funny)
I am writing this letter to request ISP service from you. After that is completed, I will be able to telephone you to arrange a domain transfer.
Incidentally, do you know to whom I can write to arrange for water service so I can watch CNN?"
Hell, use the inet for phone today... (Score:3, Insightful)
Instead of using QoS I wrote this script.. (Score:2)
Being the hack that I am, I whipped up a bash script using ngrep that sniffs the phone calls, pulls out caller ID and outgoing call numbers for syslogging, and can run commands when incoming or outgoing calls occur. I wrote this because I have long running rsync processes that I wanted killed and restarted when a call occurs.
My script:
watchp [2y.net]
Re:And So we move closer to integrated communicati (Score:2)
But when will I be able to use the internet to make a phone call with my modem in order to connect to the internet?
Is this really a good idea? (Score:2)
Re:Is this really a good idea? (Score:2)
Not the public Internet (I hope) (Score:5, Insightful)
It's still a private network, they are just shifting to a more generic and cost-effective infrastructure. So I suppose you still can not slashdot the phone network..
Re:Not the public Internet (I hope) (Score:5, Funny)
My sister has been trying to DoS the phone network through overuse for many years now, so far to no effect.
Re:Not the public Internet (I hope) (Score:2)
Actually you CAN slashdot the PSTN. (Score:3, Informative)
Actually you CAN slashdot the PSTN (Public Switched Telephone Netowork). And you always could. The equipment is sized to handle the expected peak loads with some slop. But there is nowhere near enough equipment in place to handle every phone being connected to another phone.
You can slashdot it at several levels. The commonest is the "all-trunks busy" level - where all the routes from the calling phone to the called number (that the switching
Re:Not the public Internet (I hope) (Score:5, Informative)
Re:Not the public Internet (I hope) (Score:2)
Actually, I inserted the "probably" (and a smiley) because, after all, they could implement this private network over Internet using some sort of VPNs or other similar tricks.
Re:Not the public Internet (I hope) (Score:2)
Did anyone RTFA? (Score:2)
None of it says The Internet or The Public Internet.
A matter of time (Score:5, Interesting)
Re:A matter of time (Score:2)
Because, you know, telephone companies have generally been luddites... what, with Bell Labs and the like...
quality of sound (Score:2)
How different/irritating was the call that they needed to add the noise. Also does SprintPCS do this too? I would imagine that having no noise in a call would actually be a marketing edge (remember the pin droping commercial!)
later,
Re:quality of sound (Score:3, Informative)
Another thing normally added is near-end echo. This is the sound of your own voice piped back at you with reduced volume, something that happens in the standard phone system naturally. People have become so used to hearing the echo that they think something is wrong if they don't get it. Beca
I wonder (Score:3, Interesting)
Great! (Score:4, Funny)
Now I'll have to yell at them to get off the phone and stop hogging the bandwidth.
not 'to the net' (Score:4, Interesting)
It would be pretty cool if they did. Imagine an RFC standard phone protocol that was implemented on lots of telephone like devices. In conjunction with DHCP you could have an internet phone that worked as simply as a regular phone. And you could talk to anyone with a PC and/or another phone (maybe by typing in the IP address?
Well, I can dream, can't I? (or is this not that far off? I know you can buy IP phones today, but I don't think that they can work with both the general internet and the general phone system)
Dude! I got this chick's number! 127.0.0.1! (Score:5, Funny)
It's worth a try (Score:3, Insightful)
Re:It's worth a try (Score:2)
You might find the CLEC's here having a hard time, but certainly not the incumbants like Bell, BCE, Telus, NBTel, etc.
Re:It's worth a try (Score:2)
Not that there is any shortage of former MCI buildings (the Defense firm that employs me is about to take onof those over), but MCI seems to have leased from folk that rip the "badge" off of the building a little quicker than others.
Thank you for the correction!
Having read a little deeper (Score:5, Insightful)
So their ultimate plan is to have Video, Phone and Data linked into the same system? An Extreme bandwidth use, but one that would raise some hopes of breaking down the current 'methods of communication' fragmentation and simply leaving us with one single, integrated, communications method.
Now that raises all sorts of possibilities in terms of remote conferencing, especially as the younger, technically proficient generations move into higher echelons of the decision making process in government and corporations.
Any ideas on what OS is used to control this?
Re:Having read a little deeper (Score:2)
"Any ideas on what OS is used to control this?"
maybe this one ? [cisco.com]
Re:Having read a little deeper (Score:2)
No, actually. Lacking Control and Delete buttons, you have to push five 9's on the phone to get Windows PE to reboot whenever your call freezes on you.
Dial Up (Score:2)
OK, so you wouldn't be dialing long distance in the first place, but still, it's a lot of protocols.
Re:Dial Up (Score:2)
Most VoIP equipment out there will do one of two things when confronted with a modem or fax call: drop to g.711 (no compression at all), or drop to a proprietary method of connecting. It will actually intercept the call, change it to data, then back to modem tones at the far end, compressing with a different algorithm. than for voice.
"normal" call ? (Score:5, Funny)
They should drop calls and overcharge customers too to complete the picture.
Having worked for Telus (Score:4, Interesting)
Question... (Score:2)
So they might save money in terms of maintaining infrastructure, and also make more money from better control of their product.
MPLS (Score:2, Interesting)
Lessons fron SQL Slammer? (Score:2, Insightful)
moving data across a public network isn't safe or intelligent. Let's hope they open their eyes before this foolisness gets any further.
Re:Lessons fron SQL Slammer? (Score:2)
Re:Lessons fron SQL Slammer? (Score:2)
All i'm saying if there is some type of machine that has access to both the "fucking packet-switched network" and some other accessible network, then it might be possible to get a virus/worm/trojan that eats bandwidth for lunch and causes problems.
IPv6? (Score:3, Interesting)
Re:IPv6? (Score:2)
The future is convergence (Score:2, Interesting)
So, what's going to come through this little wonder? Well pretty much everything. People will have wireless digital phones which connect to this 'base unit' via bluetooth or other wireless tech. All this telephone traffic will travel across a
Spam (Score:5, Funny)
Soon Canadians will be getting enlarge-your-penis and invest-in-nigeria phone calls.
For more info. (Score:3, Informative)
I'm already fully converted... (Score:2, Informative)
Besides the overall geekness of being totally VoiP, I have had nothing but good experiences with it.
And I get to have an LA and NY number....
Rob
Re:I'm already fully converted... (Score:3, Funny)
You can call Sydney cheaper than I can and I live in Australia!
Goddamnit! (Score:3, Funny)
Damnit! Damnit! Damnit!
I was going to use a modem over VoIP! Curse you, Telus!
IPv6 (Score:2, Insightful)
Anyways I'm moving as far away from telco business as possible. After 20 years, as a customer, I'm less than satisfied with the 'competitive' pricing of services.
Re:IPv6 (Score:2)
Death of Alaxander Gram Bell's invention (Score:5, Interesting)
My first reaction to this move to tcp/ip based voice communication is great, dispite the fact that the telephone it self has a remarkable level of simplisity to it. Speaker, amp, microphone, even without a touch tone generator most networks i'm familar with still permit the rotery system, a call can be placed by touching wires together in that rythmic fasion.
So what is there to be gained by TCP/IP transport for telephone use, assuming we are talking about the classic land line as well as the mobile, a great deal i'd say. Fax machines for one thing will no longer be barred by that pesky 9600/14000 bandwidth issue, color faxing can be an option. A "mobile" could in theory be jacked into a land line and calls can be recieved regardless of reception, eliminating the need for features like call forwarding. A push to upgrade to this cheeper form of transport could push the telcos to actually upgrade way out of the way regions to this new digital system, so even Farmer Joe miles away from the CO could get reliable network access. Let alone the boom to the deaf community.. even with present mobile text and instent messaging it has practicaly rendered ye old TDD terminal obsolete.
But... there is a major downside. It puts control of network access back to the telcos, well not like they don't have it already. We create a dependence on high technology, requiring all homes being essentally wired for network. We also create a dependence on power, not that classic telephone doesn't take a bit of juice, but imagine if everyone's house had additional DA converters, and essentally hubs rather then splitters. Privacy could be made a think of the past, as packet sniffers could be employed to actually track specific people without the physical access that is presently required.
But I'm leaning more tward the side of the fact that there is just so much crap I want rendered obsolete, and a level of digital intrigration I would like to achieve. I no longer want to be barred by the limits of dialup service being the only thing that can be actived on demand, I want phones to be TCP/IP ready.
And yes... I want mobile phones to actually provide high speed internet and I want it everywhere! And if this means I can't use my circa 1970's phone that I bought specificly to be compatable with my first acustic(sp) modem and so be it.
IP "the Net" (Score:2)
I just thought I should let you know that IP is not the same as the internet. You know, just to keep you from embarrasing yourself on the front page of a really popular website that has "News for Nerds. Stuff that matters".
Hold the phone. (Score:5, Informative)
In fact, this is already being done by several carriers including Sprint, MCI, Intermedia, Verizon and probably others.
I have also installed numerous private networks utilizing Nortel or Cisco equipment to carry VoIP over dedicated private networks, usually frame-relay WANs. These VoIP calls are 100% reliable and are perfectly clear.
In two cases standard internet connections (cable, xDSL, frame-relay) were used to carry calls between several different offices in the United States, Canada, Europe and Mexico. These connections are not always as clear as those running on private WANs but, they have proven to be 98% reliable and are indistinguishable from regular land lines, in terms of clarity, 85% of the time.
Re:Hold the phone. (Score:2)
A couple of years back, Videotron had a project going to provide phone service over their cable modem infrastructure.
They had the pilot going with the employees, and it
Tornonto (Score:3, Funny)
(I see the upcoming pot de-regulation is having it's effect)
IANALuddite, but... (Score:3)
No electricity? no problem, it still works. Plus, analog has nostalgia value, too!
Maybe there's a cool mod someone's done for old phones like this so that we can convert them to VOIP...
Global Crossing has been doing it for a LONG time (Score:2)
this was posted last december.
ha!!!! (Score:2)
they know how to charge for it (Score:2)
The problem as I see it, I think Telus has figured out a way to charge for Long Distance with VoIP that THEY implement. I'd be weary of it myself. But who knows, Telus could surprise me, but I doubt it.
Re:they know how to charge for it (Score:2)
Why, indeed? (Score:2)
Because circuit-switched voice doesn't suffer from dropouts every time there's a sudden interest in the latest
VoIP is like hauling gravel via airplane. You can do it, but that's not what airplanes are good at.
What it really means... (Score:2)
(I'll use the US network as an example since its the one I'm most familiar with)
Right now each state is broken up into LATAs (Local Access Telecommunication Area - IIRC). Within each LATA there is a LD tandem which lets IXCs (long-distance carriers) accept and terminate calls to the local phone providers within that LATA.
The IXCs in turn have their own switches which
Re:Not to mention... (Score:2)
I've never seen a hydrogen maser used in a telco network time sync setup. Just LORAN and GPS.
Sprint (Score:2)
http://channels.netscape.com/ns/news/story.jsp?fl
DYN (Score:2)
Is anybody else bothered that Telus's Internet Service department is finding this out by reading the Toronto Star?
Testing 1-2-3 (Score:2)
Don't Worry... companies like BELL will ruin it (Score:3, Interesting)
Quite simply Large monopoly Telco's have invested large amounts of cash in the already existing (and out of date) telephone network, and would rather blow up the planet than see that change. Have a look at this [nwfusion.com] .
Bell , AT&T will start whining to governments for compensation or tax immediatly.
All I'd like to know is when did the government make it a priority to start protecting large corps from the consumers, instead of protecting the consumers from corps.
Internet via VPN (Score:3, Interesting)
Theres your broadband......
Re:Clearing things up... (Score:2)
What's switch-to-switch traffic? When you place a call a home on a 'POTS' (Plain Old Telephone Service) line, it goes over a copper pair, perhaps then aggregated to fiber with all your neighbors on the way back to the CO (Central Offic
Re:Clearing things up... (Score:2)
Re:Clearing things up... (Score:2)
The idea here is that a single fiber, instead of carrying one conversation per line, can now carry one IP stream per line, that stream being made up of N number of VoIP connections.
Re:I guarantee this will fail (Score:4, Informative)
As an example, I was working with VoIP stuff 3 years ago with Cisco, T-Mobile and Level 3: we had a project that took a GSM signal, put it onto a local (in building only) network, and from there to VoIP and onto the Cisco Call Manager system. This allowed the cell phone to be your internal company phone extension while on campus, but automatically switch back when off campus. We faced many of the same problems you cited but all were solved by the end of the "beta" test.
Also we deployed a nation-wide softswitch infrastraucture that allowed us to hook Cisco VoIP phones at any point in the network and make toll-quality calls out from the main PBX back in Broomfield. This saved the company from having to drag a copper pair to each and every little regeneration site onthe fiber right of way, which is not an inconsiderable amount of cash when you figure the extent of Level 3's network.
Update your knowledge base. IP is starting to be picked up now that the private IP networks Like Level 3, Genuity, plus parts of AT&T and Sprint have worked out the problems. Draft Martini (Read the IETF documents) has been delivering standard phone services like ATM and FR over IP for a year. And Level 3, where I used to work, has had an all IP infrastructure for several years now, using the old XCom (Now VIPER) sofswitch. Want to know where those cheap long distance calling cards are coming from? They probably travel over Level 3's all IP network, converting at the edges on the softswitched architecture. And a good percentage of Worldcom/MCI long distance moves on Level 3's all IP network as well.
Secondly, the VoIP mentioned here is primarily in the backhaul, behind the CO switches (RTFA again!). For Inter and Intra-LATA carriage, VoIP is highly reliable, and much less expensive than the TDM stuff.
As for the "silence", RTFA. Seriously, they solved this one a long time ago with a little echo back on the reciever side, as well as "comfort noise" from the IP switch. This technique goes back several years.
Seriously, you need to learn more - and RTFA, because you are "mistaken about a great many thing"....