[ILUG] Help needed with VOIP & Digital Phone

[Kevin Brennan]

Michael Watterson wrote:
> Kevin Brennan wrote:
>>
>>> At which point you'd be lucky to get dialup speed. The **total** 
>>> cell throughput then with  14.4 or 21 or 42MBps peak speed mast will 
>>> then be 1Mbps to 2Mbps shared among the 120 users.
>> And dial up speed with header compression using AMR and sub 100 ms 
>> latency on air interface with little jitter and packet loss should be 
>> enough for each call.
> Not as simple. The jitter is too high for G729
I said AMR not G729
> latency is 120ms unloaded. With 20 users Latency is over 250ms. Peak 
> latency is nearly 2000ms
>
> LTE will do sub 100ms latency. No 3G system can at all usually. (in 
> Lab maybe 80ms for one user). 110ms is real world unloaded minimum.  
> 170ms is good.
Well, I am talking about future.
>
> Fixed wireless is easily sub 30ms to edge router.
>>> Mobile Phone companies  make all  their  money  from  SMS and  
>>> voice.  Data  makes them no money. LTE will cost to them at least 
>>> 100 Euro a Gigabyte, inc getting ROI in a sensible time frame.
>> Then they should sit on the fence with existing GSM infrastructure 
>> and count the money.
>> perhaps you should advise them because they are doing the opposite   
>> As I said voice and SMS revenues are dropping, for example Orange 
>> recently stated that it wants to increase its mobile sales from 
>> non-voice services to a fifth of its revenue in the next couple of 
>> years (currently 6%).
>>
> The price for 10Gbyte cap would need to be at least €80 to €120.
>
> At the minute they are paying for market share. At some stage they 
> have to make profit from Data.
There's no doubt the future is in 'data', that's why they're paying for 
it. Since 'IP services' will be the dominant payload on future mobile 
networks doesn't it make more sense to separate the application from the 
lower layers properly an provide a high quality low latency mobile IP 
transport network ie. a flat architecture (unlike the current GSM/3G 
network).
>
> The expensive line rental here of course lets them all overcharge for 
> voice.
and in mobile don't forget subsidies on handsets
>
> Lines down for over 82% before privatisation to less than 68% of 
> households now. eircom have shot their own feet off.
>
> Unfortunately the Phone Telcos more than the pure ISPs listen too much 
> to the vendors and don't ask the right questions.
>
> At Mobile World Congress in Barcelona the other week someone claimed 
> Mobile was the cheapest solution to Rural Broadband in Europe. You can 
> do fixed wireless masts (x10 to x20 times the performance in same 
> spectrum because users have directional aerials) for 1/4 the price of 
> Mobile.
>
> You can do fibre to home for Everyone in Ireland for the cost of a 
> real 100% coverage LTE Mobile network.
Can you ? and which is better to have ? (i'm not saying that one 
replaces the other)
>
> Finland is doing Fibre as part of it's Universal Broadband for 88M. We 
> hand 79M to 3 for "Broadband" when they are rolling out a phone 
> network already. 4/5ths roughly of it already there.
>
What do you expect from a government which paid 30m per km for Luas 
(then did not even connect 2 lines and run rails over the mad cow 
roundabout)
> So basically we are paying  79M  to 3 for the exact  thing that  3 &  
> Meteor are rolling out and  O2 and  Vodaphone  already have.
>
> You need  600 to 1200 rural masts, not the 160 that 3 is promising to 
> add 25% of the NBS population (220K ish buildings, 400K people?)  for 
> 36:1 contention and VOIP as per NBS.
>
> Nokia's own figures (the I-HSPA vendor) show average loaded throughput 
> per sector at 1Mbps / 2MBps.  Any of the decent Fixed wireless systems 
> (even some that are over 4 years old) can do average sector throughput 
> of 10Mbps to 22Mbps depending on system per 5MHz (3G sectors are 
> 5MHz). The really rubbish Fixed Wireless can do average throughput 
> 5Mbps per Sector in 5MHz, x5 better than HSDPA.  

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