There are 2 types of architectures

P2P: Point-to-Point, direct connection with the customer

  • One fibre is dedicated to customer access from the Optical Connection Node (OCN).
  • Terminal equipment usually consists of switches in the office and CPEs for customers.

P2mP: Point-to-Multi-Point, shared connection

  • Shared on an optical level, the network is commonly called PON.
  • Equipment consists of OLTs in the office and ONTs for customers.

Up to 9216 subscribers can be connected in PON with a 144-fibre cable.

The GPON network (Gigabit Passive Optical Network)

The principle of FTTH access networks is to bring the optical fibre to subscribers.

The use of optical fibre between the Optical Connection Node (OCN) and the subscriber makes it possible to have a sustainable infrastructure to support the increase in data transfer rates.

Very high data transfer rates can be achieved over longer distances compared to a copper infrastructure. In addition, maintenance and equipment costs are also reduced because optical fibre deteriorates less quickly than copper. Customers can enjoy many services with better quality and comfort.

In GPON networks, the operator deploys smaller cable capacities. With this network, one fibre can connect up to 64 subscribers, or even 128 subscribers thanks to optical splitters.

Good to know

When it comes to the OCN, the GPON network has a smaller footprint than a Point-to-Point network. On the other hand, on a GPON network the data transfer rate is shared, but it is not shared on a Point-to-Point network.

PON access equipment


Subscriber ONT active aggregation equipment.

Each Optical Line Terminal/Termination (OLT) port is connected to the optical splitter by a single fibre.


Subscriber equipment that communicates with the OLT. RJ45 port for IP services (data, VoIP, IPTV). POTS ports for standard phones.

There are several versions of Optical Network Terminal/Termination (ONT) depending on the requirement.

The Point-to-Point active network


The RAX721 is a compact IP/MPLS aggregation switch. It is designed to be used in an active solution, to aggregate CPE in terms of the OCN.

Équipement de démarcation Ethernet gigabit et 10 gigabits pour opérateurs fixes ou mobiles, entreprises, collectivités territoriales, etc.

Customer-Premises Equipment has several access ports that make it easier for users to connect to various high-speed services (broadband internet, video, voice via a single high-speed connection) and one or more uplink ports connected to the aggregation switch.


1G E1 demarcation device.
Application: managed connection or service collection.


1G Carrier Ethernet demarcation device. Application: managed connection or 4G and 5G service collection.


1G/10G MEF CE2 demarcation device. Application: managed connection or 4G and 5G service collection.