MT90500AL Просмотр технического описания (PDF) - Mitel Networks

Номер в каталоге

Компоненты Описание

производитель

MT90500AL

Multi-Channel ATM AAL1 SAR

Mitel Networks 

MT90500

Applications

• B-ISDN (Broadband ISDN) systems requiring

flexible N x 64kbps transport

• Connecting TDM backplane to TDM backplane

over ATM network (GO-MVIP MC4, or other)

• Systems requiring ANSI T1.630 Structured

Data Transfer services for 1 to 122 TDM

channels per VC

• Systems requiring ITU-T I.363.1 circuit

transport over Structured Data Transfer for 1 to

96 TDM channels per VC

• Systems requiring AF-VTOA-0078.000 (ATM

Forum CES v2.0) “Logical Nx64 Basic Service”

• Systems requiring AF-VTOA-0083.000 Voice

and Telephony over ATM (CBR-AAL5).

• Mapping between CBR-AAL0, CBR-AAL5, and

AAL1

• Mapping between CBR partially-filled cells and

full cells

• Mapping between CBR single-voice cells and

Nx64 cells

• ATM uplink for expansion of COs, PBXs, or

open switching platforms using an adjunct ATM

switch

• ATM Public Network access for PBX or CO

• ATM Edge Switches and CPE Integrated-

Access over ATM

• TDM traffic transfer over an asynchronous cell

bus

• Systems requiring Nx64 over CBR-AAL5.

Description

The MT90500 Multi-Channel AAL1 SAR is a highly

integrated solution which allows systems based on a

telecom bus to be interfaced to ATM networks using

ATM Adaptation Layer 1 (AAL1), ATM Adaptation

Layer 5 (AAL5) and ATM Adaptation Layer 0 (AAL0).

The MT90500 can be connected directly to a ST-BUS

time division multiplexed (TDM) backplane

containing up to 1024 full duplex 64kbps channels.

Up to 1024 bi-directional ATM VC connections can

be simultaneously processed by the MT90500 AAL1

SAR device.

On the synchronous TDM bus side, the MT90500

device interfaces with sixteen bidirectional ST-BUS

serial links operating at 2.048, 4.096 or 8.192 Mbps.

TDM bus compatibility with MVIP-90, H-MVIP, and

SCSA interfaces is also provided.

On the ATM interface side, the MT90500 device

meets the ATM Forum standard UTOPIA Bus Level

1. This supports connection to a range of standard

physical layer (PHY) transceivers.

The MT90500 provides a built-in UTOPIA multiplexer

which allows external ATM cells to be multiplexed

with internally-generated cells in the transmit

direction. This feature can be used to connect

another MT90500 (to expand the TDM bandwidth of

the system to 4096 TDM channels), or to connect an

external AAL5 SAR (to multiplex non-CBR ATM cell

traffic with the MT90500 CBR stream).

Off-the-shelf

ATM PHY

Device

16-bit CPU port for

internal register and

external memory pro-

gramming

CPU

Primary

UTOPIA

Port

Local Memory

External

Synchronous

SRAM

MT90500

AAL1 SAR

Secondary

UTOPIA

Port

Off-the-shelf

SAR Device

(AAL5)

TDM Data, Clock

and Sync Lines

MVIP-90

H-MVIP

ST-BUS

SCSA

IDL

Figure B - MT90500 Device Application Block Diagram

2

Share Link: