Taking too long? Close loading screen.


Last-mile dark-fibre infrastructure that provides unrestricted connectivity between Tachyon aggregation nodes and customer sites.

Helios is a key component of our last-mile dark-fibre network. Together with Tachyon nodes and Peregrine or Calypte links, it lets you connect directly to your customers premises using the most reliable and unimpeded communications technology available today.


Helios links connect your customer sites to our Tachyon nodes, enabling you to aggregate traffic onto your core network. Helios infrastructure is normally deployed in a star topology.

Data sheet

Connectivity options Tachyon to access site
Non-recurring charge Connection fee
Monthly recurring charge Fixed lease payment
Lease/payment terms 2 years
Fibre pairs Single
Redundancy Optional diverse link back to same Tachyon node
Access build Entry into meet-me room at access site
In-building reticulation from meet-me-room to end customer (cost limit)
Service level Unprotected
8-hour mean time to repair
Monitoring Main route


Terms and conditions


  • Helios links are available only in the vicinity of DFA PoPs within predefined DFA aggregation areas.
  • Helios links cannot cross aggregation-area boundaries.
  • Helios links may not terminate in the following types of locations:
    • data centres
    • peering points
    • switching centres that connect to multiple third-party providers
    • high sites
    • passive aggregation infrastructure
    • carrier meet-me rooms
    • RAN high sites (2G, 3G, 3.5G, 4G, 5G and future RAN evolution) and DAS systems that use licensed and unlicensed frequencies
    • licensed and unlicensed microwave backhaul
    • any other ECNS wireless-access-network service.
  • If you do not already host equipment in the DFA PoP, a monthly cross-connection fee will apply for every Helios link, if you purchase a Calypte service as backhaul.
  • One termination point must always be at a DFA PoP.
  • The actual duct distance of a Helios link can extend up to 70 m from the DFA infrastructure to a handhole at the public boundary of the premises that you wish to connect. If you need an actual duct distance of more than 70 metres, the build will be for your account.
  • You cannot use a Helios link to connect your
    • core nodes to each other
    • core nodes to PoPs to aggregate multiple end customers onto one link.
  • You may use a Helios link to connect only a single end customer to a DFA PoP. You may not use it to aggregate links to multiple end customers in the same building or adjacent buildings.
  • If you violate the terms of service, DFA may automatically migrate a Helios link to a suitable alternative service and backdate the billing to the start date of the original Helios contract term.

DFA’s responsibilities

  • If the building has existing reticulation, DFA will install its own reticulation in accordance with the rules of the landlord.

Your responsibilities

  • Any third-party costs that the landlord may charge will be for your account.
  • If the access build and reticulation costs exceed R34,000, the excess will be for your account.
  • You will need to install and maintain your own equipment in the DFA PoPs.
  • You will need to negotiate landlord permission for fibre entry. DFA will assist where possible.
  • You will be liable for abortive costs if DFA incurs costs as a result of, among other things, your sites not being ready or you cancelling an order.


  • If you are ordering a diverse Helios link, you must clearly specify that in your order and indicate the primary Helios link.
  • If a second access entry is needed for the diverse link, DFA will cover the build cost subject to feasibility rules.
  • Standard Helios feasibility rules apply to diverse links.

Terminations and cancellations

  • The terms and conditions for termination will be stipulated in the commercial agreement.
  • An early termination penalty equal to the contract value of the remainder of the term will apply.
  • DFA will waive the penalty for an early link termination if you order another Helios link at the same or a higher contract value as that of the terminated link’s remaining contract term. The following will apply:
    • The terminated link will be billed until the new link is built and signed off.
    • The new link will have its own full contract term and will be subject to the standard product rules.
    • You will need to pay the remaining pro-rata costs for the build, installation, activation, and testing.
    • You will need to pay any third-party costs that DFA may incur as a result of the termination and substitution.
  • After the initial two-year contract expires:
    • month-to-month billing will continue at the initial rate until you terminate or renew the service
    • you need to give 30 days’ notice before terminating a Helios service
    • the monthly recurring charge is subject to change.


Volume order options

Helios Density

With Helios Density you can pay a lower monthly recurring charge on additional Helios services to the same site. The lower charge is based on the volume of additional links that you order.

Terms and conditions

In addition to the standard Helios service rules, the following will apply:

  • DFA will apply the lower charge to additional Helios services to the same site and access infrastructure as your first Helios link.
  • You cannot use a Helios link as a diverse link for another Helios link.
  • DFA will get landlord approval.
  • If you terminate the first link within its initial 24-month contract term, the monthly recurring charge of one of the remaining Helios Density links will change to the standard full cost of the first link.

Helios Volume

Helios Volume gives you the option to commit to a volume order with a ramp-up. The links that are part of the volume order will have a lower monthly recurring charge.

Terms and conditions

In addition to the standard Helios service rules, the following will apply:

  • Helios Volume is based on you reaching a minimum milestone per quarter. If you miss two consecutive milestones, DFA will revert the charges to the standard Helios prices and backdate the billing.

Pin It on Pinterest

Share This