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GFP-F maps each client frame into a single GFP frame. GFP-F is used where the client signal is framed or packetized by the client protocol. GFP-T, on the other hand, allows the mapping of multiple 8B/10B block-coded client data streams into an efficient 64B/65B block code for transport within a GFP frame.
A virtually concatenated group is typically referred to by the notation pathType-Xv, where pathType is VC-4, VC-3, VC-12 or VC-11 and X is the number of members in the group. A 10-Mbit/s Ethernet link is often transported over a VC-12-5v which allows the full bandwidth to be carried for all packet sizes.
The Synchronous Transport Module, level 1 (STM-1) frame is the basic transmission format for SDH—the first level of the synchronous digital hierarchy. The STM-1 frame is transmitted in exactly 125 μs , therefore, there are 8,000 frames per second on a 155.52 Mbit/s OC-3 fiber-optic circuit.
EoPoS is a standardized method for transporting native Ethernet frames over a SONET/SDH network, by first mapping into one or more PDH tributaries such as T1, E1, or DS3. The tributaries can then be dropped from a legacy ADM , delivered to the customer premises, and the PDH links resolved back to an Ethernet connection by a piece of equipment ...
EoPDH is a standardized methodology for transporting native Ethernet frames over PDH links such as T1, E1, or DS3.The technologies used in EoPDH include GFP frame encapsulation, Ethernet Mapping, Virtual Concatenation, Link Capacity Adjustment Scheme, and Management Messaging (OAM Archived 2006-08-23 at the Wayback Machine).
The Virtual Concatenation is specified in ITU-T Recommendations G.707 (2007) [1] and G.783 (2006). [2] Virtual Concatenation is used to split Sonet/SDH bandwidth up into right-sized groups. These virtually concatenated groups can be used to support different customers and services and bill accordingly.
Automatically Switched Optical Network (ASON) is a concept for the evolution of transport networks which allows for dynamic policy-driven control of an optical or SDH network based on signaling between a user and components of the network. [1] Its aim is to automate the resource and connection management within the network.
The STM-1 (Synchronous Transport Module level-1) is the SDH ITU-T fiber optic network transmission standard. It has a bit rate of 155.52 Mbit/s. It has a bit rate of 155.52 Mbit/s. Higher levels go up by a factor of 4 at a time: the other currently supported levels are STM-4 , STM-16 , STM-64 and STM-256 .