Nortel 5399 安装指南
Model 5399 Remote Access Concentrator Module Hardware Installation Guide
Chapter 1 Introduction
1-4
Module Features
Processors
The module utilizes three 80486 DX2 clock-doubled processors,
operating at 64 MHz.
operating at 64 MHz.
WAN Interfaces
These interfaces reside on the module and are accessible via an RJ48C
connector on the front panel. Each WAN interface is controlled by one
of the 80486 DX2 processors, which also controls the internal modems.
The WAN interfaces can accept channelized T1, channelized E1, or ISDN
PRI lines.
connector on the front panel. Each WAN interface is controlled by one
of the 80486 DX2 processors, which also controls the internal modems.
The WAN interfaces can accept channelized T1, channelized E1, or ISDN
PRI lines.
Memory
The module has 8 megabytes of main DRAM. An additional 4 megabytes
of DRAM is provided for each WAN interface controller.
of DRAM is provided for each WAN interface controller.
Flash Memory
The module is equipped with 2 megabytes of Flash memory for image
storage.
storage.
Modems
The Model 5399 Remote Access Concentrator Module can be configured
with up to 62 internal DSP-based digital modems. The modems are
dynamically downloaded with images to configure them to the
appropriate protocol. The modems are located on plug-in modem cards
installed on the module.
with up to 62 internal DSP-based digital modems. The modems are
dynamically downloaded with images to configure them to the
appropriate protocol. The modems are located on plug-in modem cards
installed on the module.