In the customer's environment, an ITS designer should avoid the need for optical fiber field splicing by:

Oversized inner duct eases cable pulling and future upgrades but does not reduce or eliminate the need for field splices if the cable itself must be joined.

Oversized cable trays provide physical space management but have no effect on whether field splicing is needed.

Pre-connectorized cables address termination at endpoints but do not prevent the need for mid-span field splices if the cable run requires joining.

Field splicing is required only when a cable run must be joined at an intermediate point, either because the cable is too short or because a break occurred. By pulling a single continuous length of cable from end to end, no splice points are introduced anywhere in the run, completely avoiding the time, cost, and insertion loss associated with field splicing. This is the most direct and reliable method to eliminate field splices in an ITS fiber design.

Multiple pull boxes are used to manage long or complex conduit runs and may actually increase splice points by requiring the installer to join cable segments pulled from each box.