2SA (2-Port Synchronous/Asynchronous WAN Interface Card)

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 Hardware Description

This document describes hardware components of the AR, including the cabinet, chassis, power supply facilities, fan modules, cards, cables, and pluggable modules for interfaces. You can find useful information about AR hardware components from this document.

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2SA (2-Port Synchronous/Asynchronous WAN Interface Card)

Card Overview

The 2SA is an enhanced high-speed synchronous/asynchronous serial interface module. It can work in synchronous or asynchronous mode, and often uses the synchronous mode to connect to a WAN.

A 2SA card can be installed in a SIC slot of a router.

Figure 7-105 shows the appearance of a 2SA card.

Figure 7-105 2SA card appearance

Version Mapping

Table 7-241 lists the device models and software versions supporting the 2SA.

Table 7-241 Version mapping

Card Name	Device Model
2SA NOTE: This card is supported in V200R001C01 and later versions.	AR1200 series AR2200 series (All models in this series except the AR2201-48FE and AR2202-48FE) AR3200 series AR3600 series

Card Name

Device Model

2SA

NOTE:

This card is supported in V200R001C01 and later versions.

AR1200 series

AR2200 series (All models in this series except the AR2201-48FE and AR2202-48FE)

AR3200 series

AR3600 series

Functions and Features

Table 7-242 describes the functions and features of a 2SA card.

Table 7-242 Functions and features

Function and Feature	Description
Synchronous mode	Uses a synchronous serial interface to connect to a WAN.
	A synchronous serial interface can function as a DCE or DTE and supports multiple physical layer protocols, such as V.24, V.35, and X.21. It does not support the X.21 DCE mode.
	The maximum rate of V.24 is 64 kbit/s, and the maximum rate of V.35 is 2.048 Mbit/s.
	Supports link layer protocols PPP, FR, and HDLC.
	Supports the IP protocol.
Asynchronous mode	An asynchronous serial interface supports the RS232 protocol and provides a maximum transmission rate of 115.2 kbit/s.
	An asynchronous serial interface works in protocol or flow mode.
	Supports the PPP and IP protocols in protocol mode.
	Does not support the PPP or IP protocol in flow mode.

Panel

Figure 7-106 shows the indicators on a 2SA card, and Table 7-243 describes the indicator states and meanings.

Figure 7-106 Indicators on an 2SA card
Click to enlarge

Table 7-243 Indicator description

Number	Indicator	Color	Description
1	STAT	Green	Slow blinking: The system is running properly. Fast blinking: The system is being powered on or restarting.
		Red	Steady on: A fault that affects services has occurred and cannot be rectified automatically. The fault needs to be rectified manually.
		Off	The system software is not running or is resetting.
2 and 3	SA interface indicators: 2: LINK indicator, green 3: ACT indicator, yellow	Green	LINK indicator steady on: A link has been established on the interface.
		Green	LINK indicator off: No link is established on the interface.
		Yellow	ACT indicator blinking: Data is being transmitted or received on the interface.
		Yellow	ACT indicator off: No data is being transmitted or received on the interface.

Figure 7-107 shows the interfaces on a 2SA card.

Figure 7-107 Interfaces on a 2SA card
Click to enlarge

1. Two SA interfaces

SA interface

When working in synchronous mode, the SA interfaces implement interworking between enterprise branches and the headquarters over PPP links. When working in asynchronous mode, the SA interfaces are used to log in to other devices from the local device through the redirection function. Table 7-244 lists attributes of a SA interface.

Table 7-244 SA interface attributes

Attribute	Description
Attribute	Synchronous Serial Interface		Asynchronous Serial Interface
Connector type	DB28
Standards compliance and working mode	V.24 DTE V.24 DCE	V.35 DTE V.35 DCE X.21 DTE RS449 DTE RS449 DCE RS530 DTE RS530 DCE	RS232
Minimum baud rate (bit/s)	1200	1200	600
Maximum baud rate (bit/s)	64000	2048000	115200
Services provided	DDN leased line		Modem dial-up Backup
Services provided	Terminal access		Asynchronous leased line Terminal access
Cable type	SA Cable

Technical Specifications

Table 7-245 lists the technical specifications of a 2SA card.

Table 7-245 Technical specifications

Item	Specification
Card type	SIC
Hot swap	Supported
Physical specifications	Dimensions (H x W x D): 19.82 mm x 100.1 mm x 223.5 mm (0.78 in. x 3.94 in. x 8.80 in.) Maximum power consumption: 7 W Weight: 0.3 kg (0.66 lb)
Environment parameters	Operating temperature: 0°C to 45°C (32°F to 113°F) Operating relative humidity: 5% to 95%, noncondensing Storage temperature: -40°C to +70°C (-40°F to +158°F) Operating altitude: 0 m to 5000 m (0 ft. to 16404.2 ft.)

Ordering Information

To place an order, visit https://e.huawei.com/en/how-to-buy to find the local supplier or submit your inquiries online.

Table 7-246 provides 2SA card ordering information.

Table 7-246 Ordering information

Part Number	Model	Name Label (Silkscreen)	Description
03020SAY	AR0MSDSA2A00	2SA	2-Port Sync/Async Serial Port Interface Card

Card Overview
Version Mapping
Functions and Features
Panel
Technical Specifications
Ordering Information

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Updated: 2023-08-08

Document ID: EDOC1000009848

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