Bitstream xDSL

Proximus Reference Offer for Bitstream xDSL Access

A regulated offer that enables wholesale customers to offer data access services to their end-users, using the fixed copper network of Proximus

Your network is linked to the Proximus network in specific Access Points, from where your data traffic is carried over the Proximus Ethernet network to the local exchange where you are connected. In function of your requirements, Proximus shapes an xDSL (ADSL, ADSL2+, Re-ADSL2 or VDSL2) signal on the local lines to your end-users.

The conditions for providing Bitstream xDSL services are set out in the Proximus Reference Offer for Bitstream xDSL Access.

Regulated offer

The version 2 of the Bitstream xDSL offer has been approved by BIPT on 17/06/2020 and is published here below. Compared to the previous version, the following changes have been integrated in this new version:

  • Addendum " Improved Test de Bonne Fin [TBF] process for VDSL2 lines " approved by BIPT on 18/02/2019 – changes are highlighted in LIGHT GREY
  • Addendum " Additional symmetric VDSL2 profiles” approved by BIPT on 04/03/2019 – changes are highlighted in YELLOW
  • Addendum " SDSL “Stop sell” / “Stop service” approved by BIPT on 03/06/2019– changes are highlighted in DARK GREY
  • Addendum "Update on Internet Control Message Protocol” approved by BIPT on 08/08/2019 – changes are highlighted in RED
  • Addendum " Update on Field Partner Management” approved by BIPT on 08/08/2019 – changes are highlighted in TURQUOISE
  • Addendum " SLA MSO response times” approved by BIPT on 10/09/2019 – changes are highlighted in GREEN
  • Addendum " Shared VLAN transport: extension of low priority (p1) bandwidth” approved by BIPT on 11/12/2019 – changes are highlighted in PINK
  • Addendum " Shared VLAN transport: extension of best effort (p0)bandwidth” approved by BIPT on 21/04/2020 – changes are highlighted in PINK
  • Addendum " Stop-service xDSL services over legacy ISDN-BA” approved by BIPT on 06/02/2020 – changes are highlighted in BLUE
  • BIPT decision of 25 March 2020 concerning the analysis of the Proximus reference offers for Unbundled and Bitstream access to the copper local loop – changes are also tracked.

Key features

The Welcome Pack explains how a new operator can implement the Bitstream xDSL offer and deliver its first end-user lines.


The Bistream xDSL offer consists of various building blocks to deliver data access to the end-users


The OAL (OLO Access Line) is the connection between Proximus’s network and the OLO’s network. The network is divided into 5 areas and approximately 600 local networks. There are two PoPs per area and one LEX per local network. The OLO must order an OAL in a Proximus Service PoP or a LEX to provide data access to the end-users of the corresponding area.

Ethernet Transport

Between the LEX where the OLO wants to be active and the OAL, data are carried on Proximus Ethernet network through VLANs. When ordering VLANs, the OLO can choose between 4 service qualities and two VLAN options (Shared or Dedicated VLAN). With Shared VLAN, the data from the end-users will be bundled in 4 VLANs (one per service quality). With Dedicated VLAN, a specific VLAN will be created to bundle all the traffic from each specific end-user.

End-user lines

The end-user line is the link between the DSLAM (situated in the LEX or in a ROP - Remote Optical Platform) and the end-user. It uses one of the available xDSL technologies to provide a fast end-user access on Proximus copper pairs. The access speed depends on the distance and quality of the copper pair between the end-user and the DSLAM or ROP.


The VDSL2 technology requires a specific configuration of the CPE (modem). Therefore, only CPEs provided by Proximus or CPEs specifically tested for Proximus network will be accepted.


Any other additional relevant information can be downloaded on a secure web page. Any interested party has to sign a Non-Disclosure Agreements to obtain access to this page.

You can access this additional information on the Bitstream xDSL offer via your Personal page.