#1 Confirm you have the All-Fi Hub (BGW620)
The All-Fi Hub is AT&T Internet Air’s hub — model BGW620 — with its own light document (S25). Do not read it with the BGW320’s table in mind: the two gateways share AT&T branding but differ in states, cadences and reset behavior. The label on the hub carries the model; that, plus the light state, is what AT&T support will ask for.
This hub is also the one AT&T device in the set with a documented internet backup mode — a battery-backed state it enters during network outages. That single feature changes the advice for several light states below.
#2 The official documentation, in one place
| What you need | The official source |
|---|---|
| Complete light table (incl. cadence definitions) | All-Fi Hub BGW620 “What Do The Lights Mean” PDF (S25) — condensed in this site’s All-Fi Hub light guide |
| Restart article | AT&T: restart or reset your gateway (S07) |
| Speed tests | AT&T speed test page (S49) and the AT&T speed test guide |
| Speed factors | Optimize your connection (S50) |
#3 The light states, and what each one asks of you
AT&T’s PDF gives every state an action (S25) — this is the rare light table that is also a procedure list:
| State | Meaning | The documented action |
|---|---|---|
| Solid white | Online | None — connect and enjoy |
| Pulsing white, slow | Powering up | Wait |
| Pulsing white, fast | Starting up | Wait during this time |
| Pulsing green, fast | Connected, ready for activation (initial install only) | Complete activation; occurs only during initial installation |
| Solid red | Overheating or hardware issue — the PDF lists both under solid red | Move to a flat surface (no carpet) with space around, under and above for airflow; if rebooting doesn’t fix it, the hub needs replacement |
| Pulsing red, fast | Network service issue, possibly needing AT&T | Check for an outage in Smart Home Manager or myAT&T; try rebooting the hub |
| Pulsing red, slow | No broadband connection | Check for a loose, disconnected or damaged cable, then press and hold the red reset button for 10 seconds |
| Pulsing amber, slow | Update in progress | Wait until the light returns to solid white |
| Pulsing yellow, fast | Phone registration failed — one VoIP line has a problem | VoIP-line troubleshooting / support |
| Solid yellow | A VoIP line is configured and registered, or a call is in progress | None |
| Pulsing blue, fast | Network outage detected; hub is trying to enter internet backup mode | Let it transition; see the outage through |
| Solid blue | Running in internet backup mode | Wait — the hub returns to fiber service when the outage is over |
Two details in this table are easy to miss and worth flagging. First, AT&T defines its cadences numerically (S25): fast pulsing is approximately one pulse per two seconds, slow is approximately one pulse per four seconds — so “is this blinking fast or slow?” has an official answer here, which almost no other provider document provides. Second, the 10-second hold on the red reset button is documented specifically for the no-broadband state (pulsing red, slow) — a real, published reset hold for this device, distinct from the BGW320’s disputed duration.
#4 Internet backup mode: what it means in an outage
The blue states are the All-Fi Hub’s signature feature (S25). During a network outage, pulsing blue fast tells you the hub has detected it and is moving to internet backup; solid blue means it is running on backup and will return to fiber service when the outage is over — no action required.
The practical checklist during any blue state:
- Confirm the outage in Smart Home Manager or myAT&T (S25 uses exactly these tools for the pulsing-red-fast state; the outage guide lists both).
- Treat backup as a bridge, not a fix — the hub returns to fiber on its own when service is restored.
- Do not reboot your way out of a blue state — a reboot during backup interrupts the documented recovery path. The hub’s own guidance is to wait.
#5 Restart and the no-broadband sequence
For everyday restarts, AT&T’s gateway procedure applies (S07): unplug the power cord, wait 20 seconds, plug it back in, with up to five minutes of downtime expected. The All-Fi Hub adds the state-specific sequence from its own PDF (S25): for pulsing red slow (no broadband connection), check the cable first — loose, disconnected or damaged — and only then use the documented 10-second hold on the red reset button.
Order matters here because the cable check costs nothing and the reset costs your connection time. And as with every AT&T gateway in this set, the reset is a targeted action documented for a specific state — not a general first response to any problem (see restart versus factory reset).
#6 Speed tests, updates and getting help
Speed testing follows the AT&T pattern (S49, S50): the device test at att.com/support/speedtest, the gateway test in Smart Home Manager, and the device-side factor list when the gateway side reads fine. One state-specific note: while the hub is pulsing amber (updating), let it finish before testing or rebooting — the PDF’s instruction is simply to wait until it returns to solid white (S25).
For VoIP households, the yellow states are the phone line’s story: solid yellow is normal (a registered line or an active call), but pulsing yellow fast means phone registration has failed on one of your VoIP lines (S25) — that is a support contact, with the hub model and the light state, not a reboot loop.
When you contact AT&T (att.com/support, or via Smart Home Manager), lead with: BGW620, the exact light state with its cadence (fast ≈ 1 per 2 seconds, slow ≈ 1 per 4), and whether the hub was in internet backup mode at the time.
#7 Common All-Fi Hub questions
Q: My hub is solid red. Overheating or broken? The guide assigns both meanings to solid red (S25). Do the free check first: flat surface, no carpet, open air above and around — then one reboot. Solid red persisting in good airflow is the guide’s replacement case.
Q: Why is my hub blue? Blue is internet backup mode (S25): pulsing blue fast during the transition, solid blue while running on backup. It returns to fiber automatically when the outage ends — confirm the outage in Smart Home Manager or myAT&T and wait it out.
Q: Is “slow pulsing” the same on this hub as other AT&T gateways? Here it is defined: fast is about one pulse per two seconds, slow about one per four (S25). If you are comparing against the BGW320’s guide, do not assume — that document does not define cadences numerically.
Q: My phone line shows pulsing yellow. That is the documented VoIP registration-failure state — one of your VoIP lines has a problem (S25). Reboot once; if the yellow pulse returns, it is a support case for the phone line specifically.
Q: The hub is pulsing amber. Should I restart it? No — amber is an update in progress (S25). The guide’s instruction is to wait until the light turns solid white again; interrupting an update is the classic way to turn a small problem into a big one.
#8 Related pages
- All-Fi Hub light guide — the full state table from AT&T’s PDF.
- AT&T speed test — device and gateway tests, ping and jitter.
- BGW320 support — the fiber gateway’s route, including its reset-duration conflict.
- Check for an ISP outage — Smart Home Manager, myAT&T and the other providers’ tools.