Huawei V200R001 - Manual (Page 7)

User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform
Chapter 2
Configuration of Modem Management
2-1
Chapter 2 Configuration of Modem Management
2.1 Modem Management Functions Provided by VRP1.4
Modem is a network equipment in extensive use. Satisfactory management and control
of modem are important functions of router. However, as there are numerous modem
manufacturers and diversified models, there may exist differences in terms of specific
implementation and command details, although the standard AT command set of the
industry is prevailing.
To enhance router’ flexibility as much as possible, Quidway router series provide the
following Modem management functions:
1) Provide a set of script language for modem management, referred to as Modem
script below, in order to better the control of the Modem connected with the router.
Modem script may be executed in the following two ways:
z Execute modem script directly through chat-script command, for initialization of
modem or other configurations.
z Trigger the execution of modem script through specific events (such as router
startup, Modem call completed and start-chat command).
2) In the meantime, the cooperation of the script and the relevant commands can
enhance router’s remote configuration function. When the asynchronous serial
port works in Interactive mode, the user may establish its connection with this
asynchronous serial port in dummy terminal mode or remotely through modem,
and manage the router configuration.
3) The interoperability with other equipment providers (such as Cisco), is mainly
shown in the fact that the asynchronous serial ports of both parties work in
Interactive mode, and the two equipment are interconnected through modem.
2.2 Modem Script
2.2.1 Function
Quidway router series provide Modem script, mainly functions as follows:
z Modem script can be used to flexibly control modems of different models, for
example, different initialization strings used can help modems of different
manufacturers and models to work in harmony with the router.
z Modem script can be used for interactive login of remote systems, and the
interactive consulting of scripts can be used to switch into different connection
status. When connection is established through modem between the
asynchronous serial port of the modems of both parties, which protocol to
encapsulate on the physical link and various working parameters of the protocol
can be specified through consulting.
2.2.2 Syntax
Common modem script format is as follows:
receive-string1 send-string1 receive-string2 send-string2