In reply to a post by edwincluck:

Maybe that sudden boost in speed on your neighbour's line - which he attributed to G.INP being activated on his HH5a - was just the spontaneous remission of a line fault? The fact that the sync speed appeared to rise and fall so dramatically, could simply indicate an intermittent line fault. Nothing to do with G.INP.
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I did check this by confirming line stats, but they where unchanged..

As I expect you know, 9Mbps or so difference in sync is typical of standard FTTC interleaving being turned on (lowers sync) or off (raises it again). The "Max/Attainable" tends to move in the opposite direction.

G.INP does reduce interleaving to a nominal figure, either 8/1 or 16/1 from what I see, and the sync gain above occurs.

Whether or not anyone can deduce the activation or not of G.INP on a line using the HH5A I have no idea, but think it unlikely. Standard interleaving being added or removed seems more likely to me.

The ECI Modem is an incompatible POS , it does not support G.inp, I used to use the ECI till just before G.inp ( version 1 up/down )was rolled out a short time after they rolled out version 2 G.inp ( down only) i recently during August tried the ECI modem, no changes in latency were observed for around 48hrs, then DLM clobbered the connection,leaving the modem in a walled garden like state,after re installing the i found that high amounts of interleave added and a big loss of sync speed, hence the POS was swapped back to the Huawei HG612 3b modem, i purchased from flea bay and flashed with hacked/unlocked fw so i can monitor stats, within 3 days DLM relented and totally reversed it's previous actions so back to G.inp and fast path on the upstream, and normal sync rates

And yet BT claim to of tested their modems for compatibility i doubt they made it out of the box

Edited by tommy45 (Sat 31-Oct-15 18:08:34)

This may have nothing whatsoever to do with the price of bananas but my unlocked HG612 which has been using G.INP for some months dropped and resynced without G.INP about a week ago after heavy rain. Since then I've switched it off / on every few days, waiting anything from a few seconds to a few hours between off & on but still no G.INP.

In reply to a post by JHo1:

This may have nothing whatsoever to do with the price of bananas but my unlocked HG612 which has been using G.INP for some months dropped and resynced without G.INP about a week ago after heavy rain. Since then I've switched it off / on every few days, waiting anything from a few seconds to a few hours between off & on but still no G.INP.

If there hasn't been any adverse effects, and your not seeing a high error rate then maybe DLM decided your line doesnt need it, though there is some speculation that G.inp had replaced fast path as the default profile

Is it on downstream interleaving or Fast Path?

Errm, downstream. Shot of stats page below.



Stats recorded 31 Oct 2015 19:18:54

DSLAM/MSAN type: BDCM:0xa459 / v0xa459
Modem/router firmware: AnnexA version - A2pv6C038m.d24j
DSL mode: VDSL2 Profile 17a
Status: Showtime
Uptime: 2 days 10 hours 20 min 41 sec
Resyncs: 0 (since 31 Oct 2015 19:17:51)

Downstream Upstream
Line attenuation (dB): 32.7 0.0
Signal attenuation (dB): Not monitored
Connection speed (kbps): 15413 1229
SNR margin (dB): 5.3 6.6
Power (dBm): 9.9 10.5
Interleave depth: 1 1
INP: 0 0
G.INP: Not enabled

RSCorr/RS (%): N/A 0.0000
RSUnCorr/RS (%): N/A 0.0000
ES/hour: 43.4 0


What G.INP did seem to achieve was to virtually nail the sn margin's feet to the floor. It barely moved.

John

That's Fast Path, so maybe DLM has decided you don't need G.INP anyway. Bear in mind that G.INP is an error-correction method. (Retransmitting duff packets instead of correction by heavy interleaving).

In reply to a post by tommy45:

The ECI Modem is an incompatible POS , it does not support G.inp, I used to use the ECI till just before G.inp ( version 1 up/down )was rolled out a short time after they rolled out version 2 G.inp ( down only) i recently during August tried the ECI modem, no changes in latency were observed for around 48hrs, then DLM clobbered the connection,leaving the modem in a walled garden like state,after re installing the i found that high amounts of interleave added and a big loss of sync speed, hence the POS was swapped back to the Huawei HG612 3b modem, i purchased from flea bay and flashed with hacked/unlocked fw so i can monitor stats, within 3 days DLM relented and totally reversed it's previous actions so back to G.inp and fast path on the upstream, and normal sync rates

And yet BT claim to of tested their modems for compatibility i doubt they made it out of the box

From what you have said above, the modem probably hasn't even been updated with latest firmware as it has not been connected during the stages of G.INP rollouts... it was said at the beginning in March that if the modems where not connected during the pushing of new firmware or the rollout of G.INP that it would not be capable.

You also mentioned that the modem worked fine for a few days and then DLM changed something that increased the latency, so IMO that doesn't mean the ECI isn't capable, it means the DSLAM changed the settings incorrectly..

However, you haven't told us whether or not if G.INP or Fast Path was enabled before connecting the ECI Modem then 2nd time, if it was Fast Path and was then switched to a standard interleaving profile that would probably mean that DLM detected an issue...

if G.INP was activated whilst the ECI Modem was connected but the firmware wasn't able to understand this just means that the modem from Openreach point of view is capable with G.INP, but the modem wasn't up to date.

The only people that can tell us if its capable or not is the people that stuck with the ECI's during the issues and didn't just disconnect and connect different equipment...

In reply to a post by mlmclaren:

In reply to a post by tommy45:

The ECI Modem is an incompatible POS , it does not support G.inp, I used to use the ECI till just before G.inp ( version 1 up/down )was rolled out a short time after they rolled out version 2 G.inp ( down only) i recently during August tried the ECI modem, no changes in latency were observed for around 48hrs, then DLM clobbered the connection,leaving the modem in a walled garden like state,after re installing the i found that high amounts of interleave added and a big loss of sync speed, hence the POS was swapped back to the Huawei HG612 3b modem, i purchased from flea bay and flashed with hacked/unlocked fw so i can monitor stats, within 3 days DLM relented and totally reversed it's previous actions so back to G.inp and fast path on the upstream, and normal sync rates

And yet BT claim to of tested their modems for compatibility i doubt they made it out of the box

From what you have said above, the modem probably hasn't even been updated with latest firmware as it has not been connected during the stages of G.INP rollouts... it was said at the beginning in March that if the modems where not connected during the pushing of new firmware or the rollout of G.INP that it would not be capable.

You also mentioned that the modem worked fine for a few days and then DLM changed something that increased the latency, so IMO that doesn't mean the ECI isn't capable, it means the DSLAM changed the settings incorrectly..

However, you haven't told us whether or not if G.INP or Fast Path was enabled before connecting the ECI Modem then 2nd time, if it was Fast Path and was then switched to a standard interleaving profile that would probably mean that DLM detected an issue...

if G.INP was activated whilst the ECI Modem was connected but the firmware wasn't able to understand this just means that the modem from Openreach point of view is capable with G.INP, but the modem wasn't up to date.

The only people that can tell us if its capable or not is the people that stuck with the ECI's during the issues and didn't just disconnect and connect different equipment...

it was connected prior to the 1st roll-out, And for some 2 weeks after it I know because i ended up with interleave on both up & the down stream & not issue 1, were the modem had not received the firmware update , (modem unable to obtain sync) needing a DLM reset so it could download the G.inp update
I suggest you read this G.INP - BT rollout 2015 has some in depth info

The issues that i experienced where different in that the modem was in sync, but no internet access, and after swapping to a compatible modem, the HG612 i was able to see that my ds had lost some 12mbps ,g.inp was no longer active and loads of lag,(interleave ) had been applied ,

Edited by tommy45 (Sun 01-Nov-15 14:43:43)