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What is Diginet?




Point to Point Internet Connectivity (Synchronous Data Transfer)
Diginet is a dedicated, synchronous data transfer service. It provides round-the-clock, secure, high quality, point-to-point services over a digital transmission network.

Diginet is part of the much broader Telkom solutions package and has a large infrastructure (1000+ points of presence) throughout the country. It is aimed at customers who utilise their data network for most of the day on applications needing constant bandwidth.

Diginet Basic offers speeds from 2400 bit/s up to 64 kbps and is aimed at small to medium organisations.

Diginet Plus offers speeds from 128 kbps up to 2048 kbps in 64 bit/s aggregates, and is aimed at medium to large organisations which have higher bandwidth needs.

Diginet Channelised E1 provides point-to-multipoint services cost-effectively in a head office / branch office environment.

International Diginet & Diginet Plus: Diginet also offers you international dedicated data connections at rates of between 2400 bit/s and 34 Mbps. These services are available via satellite and the SAT-2 submarine cable system which links South Africa with Europe, the USA, Canada and some African countries. Also see International Private Leased Circuits.

  • Diginet services can convey digital speech and video signals on a point-to-point basis, allowing users to develop highly efficient integrated voice/data networks offering new opportunities in the growing broadband multimedia market.
  • Improved performance, reliability and quality of service are provided at a fixed monthly cost.
  • High quality digital network ensures high-speed, clear connectivity for delay-sensitive applications.
  • Provides high data transmission speeds which are seldom achieved on normal voice leased lines.
  • Wide range of data transmission speeds allows you to grow your services as required.
  • Services are monitored 24 hours a day to ensure optimum performance and quality. All components are monitored, up to the Network Terminating Units (NTUs) at your premises.
  • Faults are rectified quickly (often a fault is located and repaired before a customer even knows about it).
  • Fixed tariff scheme enables you to manage budgets more effectively by knowing your costs upfront.
  • The network is based on multiplexers with basic capacities of 30 circuits per 2 Mb/s link.
  • Demand for the service at larger centres can be satisfied at short notice.
Frequently Asked Questions
What are the advantages of Diginet?
  • An improved error ratio compared to analogue leased lines.
  • Higher availability of service due to monitoring of the network.
  • Expansion of capacity to cater for future demand.
  • International connectivity.
  • Higher speed range compared to analogue leased lines.
How does Diginet offer savings?
Because Diginet is a leased line service, you pay a fixed monthly rental regardless of the amount of traffic you send over the link (a dial-up service such as ISDN is billed on the basis of traffic). Diginet would be more economical if you aim to use your data link more than approximately 2,5 hours a day. Other Diginet applications that save time and money include facilities such as videoconferencing.

How long does it take for Diginet to be installed, transferred and repaired?
Installation and transfer times depend on the availability of local infrastructure. Where infrastructure is available, installation/transfer can take from 2 to 4 weeks. Fault repair time depends entirely on the nature of the problem. However, Diginet's fault localising facility ensures that the locations of faults are detected quickly, which considerably reduces repair time.

What standards and protocols apply to Diginet?
Diginet is protocol independent. Three different interfaces apply:
  • X.21 bis (V.24), a 25 pin interface (speeds of 600 to 19600 bit/s)
  • X.21 bis (V.35), a 35 pin interface (speeds of 48 to 64 kbps)
  • X.21 (V.11), a 15 pin interface (speeds of 600 bit/s to 1920 kbps)
Requirements
  • You need to be in an area which has access to the Diginet network.
  • A suitable location for each NTU (NTUs must not be placed on the floor).
  • A standard 230 volt AC 15-amp 3-pin domestic socket (adequately earthed and with earth leakage protection) for the exclusive use of each NTU and not more than 1,5m away from where the NTU must be installed.
  • Where an uninterrupted power supply is provided at the customer's premises, a dedicated 16-amp (red only) socket as supplied by LUMEX or CRABTREE may be installed for the exclusive use of each NTU.
  • A suitably located standard 230 volt AC 15-amp 3-pin domestic socket (adequately earthed and with earth leakage protection) for the purpose of supplying power to Telkom test equipment.



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