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Standard User tommy45
(knowledge is power) Mon 11-Nov-19 12:14:56
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Re: Zen G.Fast IP Profile?


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
This could be the same as the effect seen on VDSL2 with G.INP activated, where the ISP's radius server receives a sync speed notification lower than the sync reported by the modem.

That lower sync speed is also what is used by BT Wholesale to set the IP Profile.

Bandwidth problems sounds like a novice first-line support response, talking rubbish.

Just my thoughts.
Having that exact issue myself since DLM changed the Target Noise margin and increased the Level of G.inp, My sync is the max rate 79999kbps , Zen are reading the downstream speed as the sync rate on the GEA FTTC Service test 76.6mpbs but in the portal the IP profile is 70.39mbps actual throughput is 68mbps , That is 88% of the sync rate, it should be higher, the sync rate zen have is 72.72mbps in the portal The claim that bt have re configured the cvlan to 80mbps , not sure that is where the issue will lie, more like the BT BRAS server IMO
Standard User gc8839
(newbie) Tue 12-Nov-19 20:08:13
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Re: Zen G.Fast IP Profile?


[re: mattface] [link to this post]
 
Did you get any further with this? I have a similar problem I think. I'm on the 330 package. Openreach engineer said line could support much higher (can't remember exactly what but maybe 4/500mbps). Sync is 330 - I was using a router with inbuilt g.fast modem so could verify that (although back on the open reach modem now). IP Profile is set to 303 on Openreach speed test page. I can't see a good reason why it can't be much closer to 330.

Zen support didn't really make much sense when I mentioned I was getting about 290mbps with an IP Profile of 303mbps:

"The maximum speed the line is capable of is 330Mbps but it's estimated it should get around 308Mbps, meaning the line is performing as we'd expect. When running tests you are getting the throughput speed which is a portion of 308Mbps available. To get the most accurate speeds I'd advise trying a direct PPPoE connection to the G.Fast Modem."

DSL Checker website gives a high and low of 330 for both clean and impacted. Not sure where Zen support get 308 from.
Standard User mattface
(newbie) Tue 12-Nov-19 21:06:14
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Re: Zen G.Fast IP Profile?


[re: gc8839] [link to this post]
 
I got hold of a BT Smart Hub X which is for their G.Fast service and that shows a sync speed of 160/30 which is exactly what I'd expect. The Zen portal and Openreach checker show I'm still profiled at around 146 and nobody can give me a reason why.
The Zen portal shows slightly changing rates whenever my modem has been disconnected, so where this data is coming from nobody knows.

Since the handback threshold on my line is 95Mbit, Zen won't hand it back to BT and so they say there's nothing more I can do about it.

I've been told my cabinet is not contended, I can do 160mbit to the cabinet, but after that I get the same response you did, that I can't expect to get the the full 160 and the line is performing as Zen expect.


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Standard User stephengw
(newbie) Tue 12-Nov-19 22:42:30
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Re: Zen G.Fast IP Profile?


[re: adslmax] [link to this post]
 
In reply to a post by adslmax:
U could upgraded to 330/50 instead for an extra £10 a month. But I think Zen are free of charge to regrade for G.fast Modify order from 160/30 to 330/50 within 24 hour.

Openreach stated 160/30 are up to 145/30 and 330/50 are up to 300/50 because the max ip profile for 160/30 are 145600kbps and 30000kbps and 330/50 are 300300kbps and 50000kbps


That would tie in with my experience, but have you got a link to where thatís stated, Max?
Standard User gc8839
(newbie) Wed 13-Nov-19 16:18:20
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Re: Zen G.Fast IP Profile?


[re: stephengw] [link to this post]
 
Yes, this also ties in with my speeds (not quite but very close) so would be very interested to read a bit more on this.

From the BT Wholesale speed test: "IP Profile for your line is: 303.91Mbps".
Standard User stephengw
(newbie) Wed 13-Nov-19 19:26:11
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Re: Zen G.Fast IP Profile?


[re: gc8839] [link to this post]
 
In reply to a post by gc8839:
Yes, this also ties in with my speeds (not quite but very close) so would be very interested to read a bit more on this.

From the BT Wholesale speed test: "IP Profile for your line is: 303.91Mbps".


Mine just gave 303.95, so as near the same as makes no difference.

Edited by stephengw (Wed 13-Nov-19 19:26:31)

Standard User mattface
(newbie) Thu 14-Nov-19 07:28:46
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Re: Zen G.Fast IP Profile?


[re: stephengw] [link to this post]
 
In reply to a post by stephengw:
In reply to a post by adslmax:
U could upgraded to 330/50 instead for an extra £10 a month. But I think Zen are free of charge to regrade for G.fast Modify order from 160/30 to 330/50 within 24 hour.

Openreach stated 160/30 are up to 145/30 and 330/50 are up to 300/50 because the max ip profile for 160/30 are 145600kbps and 30000kbps and 330/50 are 300300kbps and 50000kbps


That would tie in with my experience, but have you got a link to where thatís stated, Max?


I'd also like to see where this is stated, as at no point in my purchase was I told that my "160" order would only ever be capable of 145.

I know everything is sold as "up to", but if you can't ever achieve 160, then it can't be "up to 160"? That's a bit of a swindle, isn't it?
Standard User adslmax
(knowledge is power) Thu 14-Nov-19 10:43:50
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Re: Zen G.Fast IP Profile?


[re: mattface] [link to this post]
 
G.fast 160/30 product will never sold you for 160Meg because of overhead and ip profile set by BTw and your ISP at 145Meg and it still up to 145 for true download speed with the sync rate of 159999Kbps (remember it will still 'up to') and depend on your line quality and line length from the G.fast pcp cabinet to your socket.
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