User Manual - Configuration Guide (Volume 3)

Chapter 1

Versatile Routing Platform

DDR Configuration

For details about the configurations of link layer protocol, network layer protocol and dynamic routing protocol, please refer to “WAN Protocol Configuration”, “Network Protocol Configuration” and “Routing Protocol Configuration” of this manual.

1.4 Configuring DDR

VRP1.3 provides two DDR configuration modes: Legacy DDR and Dialer Profile. The differences between the two DDRs are given below:

zDifferent scopes of applications

As described above, Dialer Profile is developed to meet the needs of various dial configurations for some common physical interfaces. For example, with only one ISDN BRI interface, Legacy DDR cannot enable Internet access and interconnection with another remote terminal at the same time, but this is possible with Dialer Profile.

zDifferent application methods and configurations

For Legacy DDR, a dial interface may be served by multiple physical interfaces, but a physical interface can belong to only one dial interface. A physical interface inherits the attributes of the dial interface that it serves. A physical interface can be both bound to the dial interface and configured as a dial interface, or directly configured as a dial interface (which is later referred to as “a physical interface directly enables DDR”). Finally, a dial interface can correspond to multiple call destination addresses through dialer map.

For Dialer Profile, although any interface may be served by multiple physical interfaces, a physical interface may serve multiple dial interfaces at the same time. It is necessary to configure authentication on the physical interface that serves Dialer Profile so that it can find, through the subscriber name of the dial-in party, the dial interface it should serve in this call. A physical interface must be bound to the dial interface to implement dial function. Finally, a dial interface corresponds to only one call destination address designated by the command dialer string.

By default, dialer in-band command is configured on ISDN BRI and PRI interfaces. That is, ISDN BRI/PRI interface is designated by default to enable DDR in Legacy DDR mode. Therefore:

zIf ISDN BRI/PRI interface is configured in Legacy DDR mode, it is unnecessary to execute dialer in-band command.

zIf ISDN BRI/PRI interface is configured in Dialer Profile mode, it is necessary to execute no dialer in-band command first.

Described below are the configurations of Legacy DDR, Dialer Profile, callback and special functions.

1.4.1Configuring Legacy DDR

I.The configuration tasks of Legacy DDR include:

z Configure an interface to send calls z Configure an interface to receive calls

z Configure an interface to send and receive calls z Set the attribute parameters of Legacy DDR.

II.Configure an interface to send calls

1)Call to a single point

Step 1: enable DDR.

1-3

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Huawei v200r001 user manual Configuring DDR, Configuring Legacy DDR, Configuration tasks of Legacy DDR include