IPLC
An international private leased circuit is a dedicated TDM private line between countries, still installed where legacy interfaces remain in service.
Definitions only — a term explained here is not a service we sell.
An international private leased circuit is a dedicated point-to-point circuit built on time-division multiplexing between two countries. It carries a fixed capacity such as E1 or STM-1 and presents a transparent channel at the handoff.
IPLC is the PDH/SDH-era private circuit. The installed base is a migration question, not a new-build default. New builds usually choose IEPL, the Ethernet replacement.
The legacy private path
| The legacy private path | IP transit | DIA | Private line |
|---|---|---|---|
| What you buy | Reachability via an upstream | Committed internet access | A dedicated circuit |
| Full routing table | Yes | Usually no | No |
| Responsibility ends | At the handoff | At the handoff | At the far end of the circuit |
| Best for | Reachability at scale | Office internet | Fixed paths and guarantees |
Text description
Rows cover what you buy, the routing table, where responsibility ends and what each is best for. A private line is a dedicated circuit. It does not carry the full routing table, and responsibility ends at the far end.
Interface and handoff
Electrical interfaces are defined in ITU-T G.703 (structured or unstructured); optical SDH interfaces in ITU-T G.957. The customer sees a clear channel and is responsible for what runs over it; provider responsibility ends at the far-end demarcation point.
Confirm the capacity, framing, clocking and protection, and ask who pays for the new handoff at migration. Compare the measured round trip against the proposed replacement. IEPL vs IPLC sets out the differences.