Telenco UK Blog

Customer Service Points (CSPs): MCSP Mini CSP vs OTB Connect

A customer service point (CSP) is an external transition box which provides a termination & demarcation point from the external fibre network into the internal customer property in FTTP networks. Below, we compare two Telenco CSP solutions: the MCSP Mini CSP (ultra-compact, splice-only) and the OTB Connect Optical Transition Box (higher capacity with adaptor options and extended slack management).

What is a CSP?

A customer service point (CSP) is an external transition box which provides a termination & demarcation point from the external fibre network into the internal customer property in FTTP networks.

Product profiles

MCSP – Mini CSP

Max 4 splices

The MCSP is a splice-only external transition box which provides access from the external FTTP fibre network into the internal customer property. Its ultra-compact size reduces the physical footprint of the enclosure on the external wall, for a discreet look, while still providing the same functionality as a larger enclosure. The MCSP has been designed to integrate with standard UK accessories, including capping 25 and cable protection systems.

  • Ultra-compact, low-profile splice point designed for up to 4 fibre splices.
  • Ideal for single-dwelling unit FTTP networks, tight spaces, risers, or façade walls.
  • Multi-layer separation between inbound and outbound fibre.
  • IP55 rated & UV stabilised.
  • Easy to install and maintain, ensuring reliable performance.
  • Designed to work with standard UK capping and drop cable systems.

Key specs

  • Max 4 customer connections / 4 splices
  • 2 input ports / 2 output ports
  • Compatible with Ø 3–8mm round cables or Flat ROC & EzAxs cables
  • 4 × 40 × 2.2 mm splices
  • Rear through-wall access
  • Multi-layer separation for incoming & outgoing fibre
  • IP55
  • UV stabilised
  • Available in Grey, Black & Brown
  • L 98.5 mm × H 112 mm × D 21 mm

OTB Connect – Optical Transition Box

24 splices / adaptor options

The OTB Connect is an external transition box which provides a termination & demarcation point from the external fibre network into the internal customer property in FTTP networks. The OTB Connect allows for 2 × LC Duplex or 2 × SC Simplex adaptors, as well as the capacity for 24 splices. Due to high fibre splice and slack storage capability, the OTB Connect is also suitable for multi dwelling unit (MDU) deployment.

  • A fuller FTTP access enclosure supporting pre-connectorised installations.
  • Ideal for single-dwelling and multi-dwelling unit FTTP networks.
  • Up to 24 splice capacity or 2 × LC DX / SC SX adaptors.
  • Patch and slack storage zones separate the network and customer sides.
  • Interfaces seamlessly with UK capping, hardware, and drop systems.
  • UV-stabilised and weather-ready for outdoor mounting.

Key specs

  • Max 6 customers / 24 splices
  • 8 input / output ports
  • Compatible with Ø 2–8mm round cables or Flat ROC & EzAxs cables
  • 2 × LC Duplex / SC Simplex adaptors
  • Rear through-wall access
  • Multi through-wall access
  • Slack storage: 30 m Ø 1.1 mm & 10 m Ø 3 mm
  • IP55
  • UV stabilised
  • Available in Grey, Black & Brown
  • L 146.5 mm × H 163.2 mm × D 41 mm

Side-by-side (Key specs)

Key spec MCSP Mini CSP OTB Connect
Max customers / connections Max 4 customer connections Max 6 customers
Splice capacity 4 splices 24 splices
Ports 2 input / 2 output ports 8 input / output ports
Cable compatibility Ø 3–8mm round cables or Flat ROC & EzAxs cables Ø 2–8mm round cables or Flat ROC & EzAxs cables
Adaptor support Splice-only (no adaptors) 2 × LC Duplex / SC Simplex adaptors
Through-wall access Rear through-wall access Rear through-wall access
Fibre separation Multi-layer separation (incoming/outgoing) Multi-layer separation (incoming/outgoing)
Slack storage Not specified 30 m Ø 1.1 mm & 10 m Ø 3 mm
IP rating IP55 IP55
UV stabilised Yes Yes
Colour options Grey, Black, Brown Grey, Black, Brown
Dimensions (L × H × D) 98.5 × 112 × 21 mm 146.5 × 163.2 × 41 mm

Speed up site work with matched bundles

Keep install quality consistent by pairing CSPs with common UK entry accessories and routing components. Each card below links to your existing bundle pages.

MCSP Mini CSP – Compact Splice Entry Bundle

A practical choice when you need a discreet splice-only CSP with compatible entry components for a clean external finish.

UK Capping & Routing Bundle (Capping 25 Compatible)

Built for tidy routing into the property using standard UK accessories and cable protection systems.

End-to-End FTTP Installation Bundle

A one-click option to support repeatable installs, including CSP entry protection and supporting components for site consistency.