Splice diagrams, ODFs and rack placement

Place equipment within a node, save fiber and port connections, and allocate splices to trays.

Last updated: 10 November 2026

On this page

Arrangement within a node Add equipment Connect a fiber or port Change splice positions or remove connections Distinguish OLT and ONT ports Record WDM and OADM equipment

Arrangement within a node

Selecting a connection point on the map shows Cables, Devices and Splices and connections in its card. Equipment is displayed beneath its parent equipment. This placement describes the arrangement inside the physical structure on the map.

Equipment	Possible location	Connection behaviour
Rack	Directly at a node	Has no ports.
ODF / patch panel	Directly at a node or in a rack	Provides a passage between rear and front ports with the same number.
Splice tray	Directly at a node or in an ODF	Groups splices into slots; has no ports.
OLT	Directly at a node or in a rack	Has separate PON outputs and uplink inputs; the trace ends at the selected port.
OLT card	In an OLT	Records PON and uplink ports separately; the trace ends at the selected port.
Splitter	Directly at a node, in a rack, ODF or splice tray	Relates the input to outputs according to the split ratio.
ONT / ONU	Directly at a node	Has a PON input port; the trace ends at the port.
WDM mux / demux	Directly at a node or in a rack	Defines passage between the common port and channel ports.
OADM	Directly at a node or in a rack	Records line, channel and express passages.

ODF faces are labelled Rear (termination) and Front (patch). A rack's RU count (information only) and equipment U position/height fields describe placement; they do not prevent physical rack conflicts when saving.

Node fiber and port connection diagram — The splice diagram shows saved connections between fibers and ports.

Add equipment

Select the connection point and select Add equipment.
Choose Equipment type.
Select the appropriate Location (parent equipment). If the required parent does not exist, add it first.
Enter the equipment name and the provisioning fields relevant to its type. Splice slot count is required for a tray, Port count for an ODF and PON port count for an OLT card.
If needed, enter Port labels, one per line in port number=label format.
Select Add to save.

A tray's splice provision is Splice slot count multiplied by Splices per slot. Port count cannot be reduced if that would exclude occupied ports. Before deleting a tray containing other equipment, move or remove that equipment.

Connect a fiber or port

Open Splice diagram and connections in the node card.
If needed, select Show free fibers and ports too.
To place a splice in a tray, choose Splice tray and optionally First slot under New splice positions.
Select a fiber or port, then the endpoint to connect it to.
Review Draft. Use Remove to discard an incorrect row.
Select Save changes.

An endpoint cannot connect to itself. Two ports on the same device, or two fibers in the same cable, cannot connect to one another at this node. An occupied endpoint cannot receive a second connection. Assignment, reservation, fault and project policies may also affect saving.

Under Connect in sequence, choose the sources, starting fiber/port numbers and Count, then select Add to put sequential connections in the draft. You must still select Save changes afterwards.

Change splice positions or remove connections

Select a connection in the diagram. For eligible connections, select a tray and slot, then Change location. Splices without a tray appear under Unpositioned. Tray provision and slot occupancy are checked when saving. Patch connections between ports do not receive a tray position unless explicitly marked as splices.

Remove connection also enters the draft first. Complete the change with Save changes. Deleting a tray does not automatically remove its splice connections; those splices become unpositioned.

Panel schedule, Rack schedule and Labels in the card lead to field outputs. See Splitting and moving to move equipment to another node.

Distinguish OLT and ONT ports

In the OLT or OLT card form, complete PON port count, PON type, Uplink port count and Uplink type. PON and uplink are separate port faces; no internal optical passage is drawn between them. At active equipment, the trace ends at the relevant port.

If PON input port count in the ONT / ONU form is blank, one input port is used. Model and Serial number are inventory details. An equipment record does not automatically provision services or configure equipment remotely.

Record WDM and OADM equipment

In the node card, use Add equipment and choose WDM mux / demux or OADM.
Use Location (parent equipment) to place it directly at the node or in a rack.
Enter Channel count and Insertion loss.
For an OADM, enter Express-path insertion loss (defaults to insertion loss) if needed.
Select Add, then connect the relevant common/line and channel ports in Splice diagram and connections.
Check the technical circuit path and optical budget items.

No direct internal passage is created between channel ports. If the project uses the WDM channel compatibility rule, inspect the result in the validation report.