I also called this morning;
Before the call: 140/40
After the 120/40 call
BBCS measurement:
The following result shows the probable bandwidth maximum technical bandwidth, which can be made available for the connection examined. It should be taken into account that the values apply from entry into the building and that domestic installation may cause a reduction in bandwidth.
VDSL:100,000 Kbps downstream / 28,000 Kbps upstream
In fact you shouldn’t have called
Or I’m angry because you still have 40Mb/s upload…
Well what I was able to discover during the call is that the status of my line is not clear, in their database I am still on a long line (on the exchange) even though I am actually connected to the microCAN. As the municipality’s migration is not yet completely complete, it is possible that my upload could evolve once the transition is complete.
That’s the optimistic side of me… always hoping.
According to my contract with Swisscom, rated internet speeds can reach up to 200/100. I hope this is not a false statement!
For the moment I have not received any communication from them to inform me of the specific reasons why in my case these values cannot be achieved.
The difference between the Swisscom measured values and the nominal values indicated by Swisscom are too large. Swisscom must do everything to bring its promises into line with reality.
Well I continued my investigation in order to understand what limits my ATM synchronization compared to what some people observe and by connecting a device other than the Internet Box (Zyxel) I was able to display more detail which allows me to visualize useful information such as the “max achievable rate” which is the maximum possible synchronization on the line with the technical parameters defined by Swisscom and I obtain:
\===================================== ====================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
G.Vector: Enable
Traffic Type: PTM Mode
Link Uptime: 0 day: 0 hour: 1 minute
==================================================== ====================================
VDSL Port Details Upstream Downstream
Line Rate: 27.519 Mbps 110.077 Mbps
Current Net Data Rate: 27.520 Mbps 110.078 Mbps
Trellis Coding: ON ON
SNR Margin: 12.3 dB 15.8 dB
Actual Delay: 0 ms 0 ms
Transmit Power: -19.5 dBm 13.6 dBm
Receive Power: -23.7 dBm 10.4 dBm
Current INP: 30.0 symbols 27.0 symbols
Total Attenuation: 0.0 dB 4.5 dB
Achievable Net Data Rate: 37.622 Mbps 141.941 Mbps
==================================================== ====================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 3.2 4.3 5.4 N/A N/A 2.0 4.6 7.8
Signal Attenuation(dB): 3.2 3.9 4.7 N/A N/A 1.6 4.5 7.8
SNR Margin(dB): 12.1 12.4 12.3 N/A N/A 15.8 15.9 15.7
TX Power(dBm): -30.9 -23.3 -22.4 N/A N/A 10.7 7.7 7.1
==================================================== ====================================
So I can expect 50% more throughput in upstream. On the other hand we see that the U3 and U4 carriers are not used (profile 30a) so there is still a little reserve on our non-G.Fast lines. Swisscom needs to get its act together….
How can we check if profile 30a has been activated?
The BBCS checker states the following: "The following result shows the probable bandwidth [maximum technical bandwidth](https://checker.vadian.net/check.aspx?xdsl=bxdsl%C2%AE=WSUB7EU7&lang=fr&QualByAdr= false), which can be made available for the examined connection.
VDSL: 100,000 Kbps downstream / 34,000 Kbps upstream "
This seems to correspond more to a 17a type profile!!
your opinion?
I still need to find the right person… namely level 3 of technical support. I should be called back by someone at this level, we’ll see… Disappointing observation on the support, the only way to get answers is to be a little virulent; but not badly polite, otherwise no return.
It’s really unpleasant because all it would take is a little more listening and that would prevent support staff from beating themselves up all day long and customers from knowing why they are paying more than with another operator.
On its own initiative, Swisscom has decided to increase the internet transmission speed, for the type M subscription from 120/20 to 200/100. However, many customers are frustrated because this promise, which seemed applicable to everyone, was not fulfilled and this without knowing valid reasons which would prevent Swisscom from keeping its commitment. In English this is called “misrepresentation”.
Question for level 3; why profile 30a is not effective for everyone?
In order to confirm that the speed increase announced by Swisscom is just window dressing and is really borderline legally speaking, here is a small statistic taken from the Swisscom database (Opendata) which shows the distribution of median speeds achievable in all Swiss municipalities where we see that only 5% of municipalities have the infrastructure (FTTH or G.fast) to offer the speeds commercially offered. The vast majority of municipalities are in the 40-80 and 80-120 Mb/s segments.
Yes I also found this strategic analysis document, a little wordy and especially in German 🤨 But it is an excellent summary of the technological options for very high speed where it is mentioned several times that Super Vectoring (VDSL2 profile 35b) would be a good solution for increasing speed in FTTB/FTTC.
I am closing this topic because there is no longer any hope of having better speed on my line. The equipment in my building is technically (very) limited… Not only not G.Fast; but also unsuitable for the “Flex” connectivity model (auto adaptation of the synchronization rate to the capacity of the line)… According to level 3.
Furthermore, I have confirmation that the VDSL2 30a and 35b profiles will never be activated by Swisscom because they overlap with the starting frequencies of the G.Fast lines. Profile 30a was approved in 2011; but removed on 1.1.2018 (see my post here: [https://community.swisscom.ch/t5/Routeur-mat%C3%A9riel/VDSL2-Activation-profil-30a/td-p/549675](https://community.swisscom.ch/t5/Routeur- mat%C3%A9riel/VDSL2-Activation-profil-30a/td-p/549675) ). So no possibility of going higher than current sync speeds.
A short message for future and current inOne Internet S and M subscribers to draw their attention to the ambiguous and misleading side of the advertising displayed.
In fact, it announces flow rates of 50/50 or 200/100 which are only achievable under certain conditions and limits which are not all expressed in the footnote:
What is not said:
With this communication we would be entitled to honest and transparent information, which is clearly not SWISSCOM’s desire.
Good evening.
Anyone know how to interpret this plan? This is the installation from the DSLAM to my building (in red at the bottom right). If anyone in the know could shed some light on the meaning of all these lines and numbers, what does the fiber represent? Copper? microCAN? etc.
Thanks in advance. I am also providing a copy of my figures from my internetbox 2 for those who would like to make the link with my previous message and what I am sending now.
