Datasheet > 28299-BRF-001-A_15

28299-BRF-001-A_15

更新时间： 2024-10-05 01:16:19

品牌	Logo	应用领域
泰科 - TE		/
页数	文件大小	规格书
4页	113K
描述
Automatic Protection Switching Controller Software

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A CONEXANT BUSINESS

Automatic Protection Switching Controller Software

CX28299

Complete APS Solution for Linear 1+1,

1:n and UPSR

KEY FEATURES

> 1+1 and 1:n Linear

> ANSI-C Source Code

Architectures

> Works with Mindspeed TAP

software drivers to provide

complete solution

Automatic Protection Switching (APS) is a feature for

SONET equipment that is used to improve the availability

and reliability of transport systems by switching to a

standby facility when failures occur. The Mindspeed APS

Controller complies with the GR-253-CORE standards

identified for two varieties of linear switching (1+1 and

1:n) as well as a ring switching topology known as SONET

GR1400 Unidirectional Path Switched Rings (UPSR). This

single package offers a portable solution to make imple-

mentation of Linear 1+1, 1:n and (UPSR) architectures

simple and quick. The APS Controller can also be distrib-

uted to support card level protection.

> UPSR support

> Distributed processor support

> Portability across Operating

Systems and hardware

platforms

> GR-253 and G.783 Annex

ACompliant

APS State Machine

At the heart of the APS Controller is a state machine

that handles the signaling and the state transitions

based on incoming APS messages. The APS message for

Linear configurations consists of the combination of K1

and K2 bytes of the SONET overhead frame. The K1 and

K2 are used to coordinate bridging and switching action

with the far end.

APS Controller

The APS Controller is operating system (OS)- and hard-

ware independent software with well-defined interfaces

that allow easy integration with system software. The

APS Controller consists of an application interface for

users’ applications and network management, a SONET

driver interface for interacting with a SONET device, and

a bridging/switching interface for switching over the

standby line. The APS software works with Mindspeed’s

TAP driver software to provide a complete PHY solution.

For UPSR architectures, path layer indications are

detected locally by the APS controller and used to switch

to the ring that exihibits the best performance.

Network Management and Configuration

The APS Controller’s application interface lets users

employ existing network management software with the

Controller to provide protection switching messages and

statistic retrieval. The APS is highly configurable through

the application programming interface (API).

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