Functions and Features
Table 5-16 describes functions and features of the 8AS.
Table 5-16 Functions and features of the 8AS
Function and Feature Specification
Asynchronous serial
interfaces
An 8AS card can provide access to a PSTN through a modem
or act as a serial port server.
Basic function An 8AS card can be used as a dialup access server for a small
or medium ISP. In this case, the asynchronous serial
interfaces provide the dial-up function.
An 8AS card can be used as a serial port server, through
which a user can log in to other devices.
Interface speed Each asynchronous serial interface provides a maximum of
115.2 kbit/s transmission rate
Protocol
l When working in protocol mode, an 8AS card supports
the PPP protocol at the link layer and IP protocol at the
network layer.
l When working in flow mode, an 8AS card does not
support any link-layer protocol or IP protocol.
Indicators and Interfaces
Figure 5-15 shows the indicators on an 8AS card, and Table 5-17 describes the indicator
states and meanings.
Figure 5-15 Indicators on an 8AS card
Table 5-17 8AS card indicator description
Number
Indicator Color Description
1 STAT Green Slow blinking: The system is
running properly.
Fast blinking: The system is
powering on or restarting.
Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
5 Cards
Issue 10 (2019-03-06) Copyright © Huawei Technologies Co., Ltd. 628
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