The classic transport technology
What is SDH?
SDH stands for Synchronous Digital Hierarchy
and is a technical standard for the fast transfer of large amounts
of data over a fibre optic network. SDH was originally developed to
expand the capacity of so-called asynchronous (PDH) transport
networks, and is still used by many large telecom operators. SDH is
hierarchical with speeds ranging from approximately 2 Megabit
(VC-12) to approximately 10 Gigabit (STM-64) per second or more.
Many telecommunications operators' transport backbones today
consists of SDH links.
What are the benefits of SDH?
SDH contains a number of technical advantages, which are
particularly important for telecom operators. SDH is often used to
transfer circuit-switched connections (ordinary telephone
connections), even though packet switching is also possible today.
SDH enables the direct interfacing to other major international
telecommunications operators' telephony networks, and the
technology is distinguished by it's capabilities in the area of
monitoring as well as a wide selection of suppliers.
How is SDH used in practice?
SDH is used to create reliable network connections between
telecom operators' switches and other equipment, eg. as a backbone
to and from mobile stations, especially because much existing
telecommunications equipment has built-in hardware for supporting
the SDH standard. GlobalConnect has worked with this technology for
many years, and we have ideal conditions for offering professional
SDH connections on national fiber network.