TIA Issues Network Model for Evaluating Multimedia Transmission over IP - TIA 921-A
November 17, 2008 // Published as a news service by IHS
| |
| Electronics & Telecom Docs |
IHS sells a full selection of standards documents & collections from the industry's top organizations.
To learn more, and for a free quote, please complete the form below. |
|
| |
The Telecommunications Industry Association (TIA) issued TIA 921-A - Network Model for Evaluating Multimedia Transmission Performance Over Internet Protocol (IP), which defines an IP network model and specifies scenarios intended for evaluating and comparing communications equipment connected over a converged network.
TIA 921-A uses the same statistical approach as previous network model standards, according to TIA.
It differs from the previous physical layer (layer 1) standards by focusing on the impact of impairments on IP layer 3 performance. IP streams from any type of network device can be evaluated using this model.
The IP network model consists of many impairment combinations that are scenario based and time varying, said TIA.
The test scenarios combine local area network, access and core network elements in a realistic way to create Layer 3 IP network impairments that cause packets to experience varying delay, reordering or loss, said TIA. These scenarios are based on actual network data provided by anonymous IP service providers and IP network equipment manufacturers.
Examples of the types of equipment that can be evaluated using this model include IP-connected endpoints and public switched telephone network-connected devices through IP gateways. The model includes parameters that can be used to configure and set up suitable emulator equipment.
TIA 921-A was formulated under the cognizance of the TIA Engineering Committee TR-30 Multi-Media Access, Protocols and Interfaces Subcommittee TR-30.3, Data Communications Equipment Evaluation and Network Interfaces.
Source: Telecommunications Industry Association (TIA).