Stm 1 what is

There is also a voice traffic requirement of 21E1s between the same two locations. Consider two different distances between the two locations: 10 km and 50 km.

GigE ZX solution can provide 70 km spans but is expensive. Longer distances can be achieved by using long haul lasers that are relatively much more cost-effective. All Rights Reserved. By using multiplexers and demultiplexers, communication networks are able to utilize small clusters of subrate channels as needed. For example, if a cellular phone service provider were to interconnect to other networks with 1, x 64 kbps channels for voice and another 1, x 64 kbps for data, a single STM-1 link would suffice.

This results in a spare of x 64 kbps channels. There are many ways to implement that same connection depending on predicted future needs and extent of existing channel-saving equipment, called transcoders.

Geisha A. The regenerator section overhead supervises the sections of a network that exist on a fiber optic cable network. Both overheads provide information on the transmission system and its management functions like failure detection, service channels and monitoring transmission quality. One of the salient features of Synchronous Transport Module level-1 is that can be multiplexed to generate higher order Synchronous Transport Modules.

By: Justin Stoltzfus Contributor, Reviewer. By: Satish Balakrishnan. Dictionary Dictionary Term of the Day. Machine Intelligence. Techopedia Terms. Connect with us. An STM-1 frame structure consists of 9 rows and columns of bytes, totalling 2, bytes. The byte-orientated arrangement has a bit-rate of The frame of STM-1 consists of payload blocks, overhead blocks and pointers. The ratio of these components can vary and depends on the initial payload that needs to be transmitted.

The last columns of the frame provide the information payload, the first 9 contain the overhead and administrative pointers. The administrative pointers can contain one or more virtual containers which have the path overhead or the virtual container payload information. An STM-1 signal is divided into two categories: the regenerator section overhead and the multiplex section overhead. It monitors the network sections that present on the fiber-optic cable network.