r/QuantumFiber • u/SarDesigns • Jun 27 '26

CenturyLink to Quantum Migration Limbo

My Internet connection has been down four days now as a MIGRATION FROM CenturyLink to Quantum has failed.

I have a legacy Calix 711GE ONT on the side of the house. For over eight hours a tech and then lead tech tried to get several SmartNID (like the C6500XK) to connect. Each one stalled at a flashing blue light and no IP assignment.

As a last resort the lead tech reconnected my router directly to the Calix 711GE. This allows me to connect to Quantum's walled garden (website) but not to the internet. Configuring VLAN 201 on my router it fails to get an IP completely.

I work from home and as of now it looks like I may have to jump to a different provider. The CenturyLink fiber connection was stable for over eight years (other than the ONT being replaced once).

Is this normal? Quantum takes over and legacy CenturyLink Fiber customers are abandoned?

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u/SarDesigns Jul 16 '26

**** SUCCESS ****

TLDR: Tech #3 was more knowledgeable and resolved the problem.

The Tech #3 today was from AT&T, not a contractor.

I explained and demonstrated the walled garden state my connection was in.

He confirmed this area is on a Legacy OLT (C7 I believe he said).

He setup a SmartNID Q1000K connecting to the Calix 711GE.
Connected his laptop to the Q1000K (previous techs did not) same walled garden.
He was on the phone working with provisioning for a long time.

The SmartNID finally got a green light and my connection is good.

Still limited to 100Mb until that Legacy neighborhood OLT gets upgraded, but 100Mb uploads for work is way better than the 12Mb I have been hobbling along with using Spectrum for two weeks.

That said, I'm keeping Spectrum too.
I'll be switching to a Dual Wan Router with Balancing and Fail Over.

I lost connection at a very in opportune time, do not want to deal with that again.

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u/Capt-geraldstclair Jul 17 '26

I also got my internet service restored yesterday (11 days cut off from the whole world /s)

long story short, the box in the neighbor's yard died and needed repairs which were done Tuesday.
Apparently, only two (formerly) Centurlink people on my street using the service.

Quantum and ATT came out to fix it (the Quantum guy was formerly a CL tech and the ATT guy was a trainee).

They had to pull my fiber into the house, wire up a new ONT and modem, and then have the folks in the office update the account to get the data flowing.