XGS-PON stands for…?

The new XGS-PON technology was put into operation in January 2020, and has offered a new solution for bringing optical fibre into homes since then. What is XGS-PON, how does the new splitter technology work, and what advantages does it offer?

20.08.2020
Author Carolin Rabea Primerova

What is a PON?

PON stands for "Passive Optical Network". This refers to an optical access network (optical fibre network) which, in the area between the local exchange and the OTO socket at home, only consists of components (cables, plugs, sleeves or splitters) that do not require a power supply. 

What does XGS stand for?

At cablex, when we talk about XGS-PON, we are referring to the new "splitter technology". It makes it possible to connect up to 32 customers with a single fibre. Each customer can be offered a bandwidth of 10 gigabits per second. The upload and download speed is the same, which is why it's called a symmetrical PON.

Explanation.

XGS-PON therefore means: X=10  G=Gigabit  S=symmetrical  P=passive  O=optical  N=network

What is the difference between XGS-PON and Fibre to the Building or Fibre to the Home?

In a Fibre to the Building installation (FTTB), the optical fibre cable ends in the micro CAN in the basement of the building, and the signal is then carried over a copper cable for the last few metres from the basement to the apartment. With XGS-PON, on the other hand, this can be done with optical fibre cable. This means XGS-PON provides a faster connection than FTTB.

From a technological point of view, XGS-PON is the next step from Fibre to the Street (FTTS) to Fibre to the Home (FTTH), or, to put it another way: the expansion of the optical fibre network to the street (FTTS) continues to evolve and move towards fibre to the home (FTTH). With FTTH or XGS-PON technology, the last few metres are connected using optical fibre, whereas FTTS or FTTB use copper cable. This new technology also allows fast bandwidths of up to 10 Gigabit per second.

XGS-PON is used in the area of FTTS if there are at least 12 residential units in the building, which are to be connected up to the OTO socket in the apartments using optical fibre. Instead of an mCAN, a splitter is installed in the shaft or house junction box. 

In terms of the overall concept, XGS-PON is to a large extent very similar to FTTH.

The difference between the two technologies relates to the use of a splitter. The splitter, which is inserted in a feeder sleeve or house junction box (HJB or BEP), makes it possible to distribute the optical fibre signal carried via one fibre from the local exchange to 16 or 32 fibres, depending on the splitter used. This step means XGS-PON can now supply up to 32 customers using a single fibre, whereas with traditional FTTH only one customer can be served by a single fibre.

Realisation.

From the very beginning, the FTTS network was designed in such a way that there are sufficient reserves for XGS-PON splitters in all shafts where an mCan is installed. This means that all new customers can be connected directly from the sleeve to the OTO socket using optical fibre.

With regard to the network architecture, there are three different cases: 

Case 1: Point-to-multipoint (P2MP) connection with splitter in the shaft (DP)
Case 2: Point-to-multipoint (P2MP) connection with splitter in the BEP (building)

This point-to-multipoint (P2MP) connection leads the optical fibre cable to the local exchange via a first splitter, and then via a second splitter in the BEP or shaft (DP) to the OTO socket.

Case 3 (no illustration): Point-to-point (P2P) connection with splitter in the local exchange (CO – Central Office). This case represents a standard FTTH Connection.

Realisation of XGS-PON in the BEP.

In St. Moritz, several locations were connected using with XGS-PON. This included the municipal administration building in the neighbouring village of Celerina. Once the contract for the installation of a splitter between the homeowner and Swisscom has been signed, the so-called recording process takes place. A technician takes photos on site to document the infrastructure and "record" all of the information required for the installation. This information is used to create the Site Acquisition Report (SAR). In the run-up to the project, civil engineering work was carried out to connect the administration building with optical fibre cable, in order to guide the cable via the so-called cable route into the building, where it was fed into the house junction box.

The installation of the house junction box (HJB/BEP) and the splitter only takes a few hours to complete.

Barto Misko shows the work steps:

Splitter installation in the house junction box.

Mann auf Freileitungsmast

Modern network construction via overhead lines.

No work access holes and fast Internet connections in Wolhusen thanks to XGS-PON.

Three new antennas improve performance.

The upgrade to the site at Uezwil will allow customers to benefit from a high-performance mobile network in future.

New reference: LEB tunnel opened in the heart of Lausanne.

Impressive: from the construction site to the finished structure. We look back at the 3 construction phases in the Lausanne-Echallens-Bercher tunnel.

Transport.

Creating a future-proof infrastructure with cablex.

Phase out - migration of a central office in Zurich.

The Füssli central office near Zurich's Bahnhofstrasse is dissolved. All customers who are connected from here are migrated to the surrounding nodes.

Advice, advice and even more advice at the BEA.

cablex has a permanent place at the Swisscom stand for all questions regarding home networking.

Roll-out completed in around 180 chemist's.

The cablex customer promise was realised in its entirety during the roll-out of the till systems.

smart cablex.

In our Smart Building, Smart City, Smart Construction and innovation, we implement innovative and forward-looking solutions for you.

cablex Academy.

The cablex Academy teaches specialist skills (competences) in the fields of network construction, service and installation. Here, focus is on the area of network construction for telecommunication.

Overhead line transport with drones.

In the third pilot project, overhead line masts were transported through rough terrain using cargo drones. The goal is the health and safety of our employees.

cablex in direct contact with SME customers on the spot.

In addition to the technical installation of the POS systems, cablex also provides SME customers with regular support.

cablex AG

Tannackerstrasse 7

3073 Gümligen

cablex.info@cablex.ch

0848 222 539