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Monitoring

The Monitoring module watches your fibre-optic network — the OLTs in your exchange and the ONUs in your customers' homes — so you can see who's online, spot weak connections before customers complain, and trace a fault to the exact port or box.

The two building blocks: OLT and ONU​

TermWhat it is
OLT (Optical Line Terminal)The ISP-side fibre box, usually in your exchange or a street cabinet. Each OLT has several PON ports, and each PON port fans out (through optical splitters) to many customers.
ONU (Optical Network Unit)The small fibre box in each customer's home, plugged into one of the OLT's PON ports. Also called an ONT.

So the hierarchy is: OLT → PON port → many ONUs (customers).

How monitoring works: polling​

The system doesn't read your fibre gear the instant you open a page. A background service polls each OLT on a set schedule — it connects over the network (via SNMP or Telnet/CLI, depending on the device) and reads the current state of every port and ONU: who's online, their optical signal levels, temperatures, and so on. Those readings are stored and shown on these screens.

That means:

  • Every figure you see reflects the last successful poll (each screen shows a "Last Poll" / "Last Seen" time so you know how fresh it is).
  • Buttons like Poll Now and Ping trigger a fresh read on demand — they run in the background, and the page updates once the device responds.

The three signal states​

Every ONU is shown in one of three states, based on the last poll and its optical RX power (the light level reaching the customer's box, measured in dBm — a more negative number means weaker light):

StateMeaning
Online 🟢The OLT saw the ONU at the last poll, and its signal is healthy.
Low Signal 🟠The ONU is online, but its light level is weak (below the OLT's low-signal threshold). An early warning of a dirty or failing fibre — worth checking before it drops.
Offline 🔴The OLT couldn't see the ONU at the last poll.

What's in this module​

The Monitoring menu has four items:

SectionWhat it's for
DashboardA fleet-wide summary — total OLTs/ONUs, online vs offline, and quick lists of problem ONUs.
OLTsYour OLTs, and the per-OLT page with ports, ONUs and a network map.
ONUsEvery customer ONU across all OLTs, and each ONU's live detail.
ONU AssignmentLink ONUs to the right subscriber accounts, in bulk.

Who can use this module​

Network operations / NOC staff. Every screen and action is permission-controlled — depending on your role you may not see Add/Edit/Delete or the Poll/Assign actions.