Huawei v200r001 1.4 Configuring DDR

User Manual - Configuration Guide (Volume 3)

Versatile Routing Platform Chapter 1

DDR Configuration

1-3

For details about the configurations of link layer protocol, networ k layer protocol and

dynamic routing protocol, please refer to “WAN Protocol Configuration”, “Network

Protocol Configuration” and “Routing Protocol Configuration” of this m anual.

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:

z Different scopes of applications

As described above, Dialer Profile is developed to meet the needs of various d ial

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.

z Different application methods and configurations

For Legacy DDR, a dial interface may be served by multiple physical interfac es, 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 direct ly 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 physica l 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 interfac e 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:

z If ISDN BRI/PRI interface is configured in Legacy DDR mode, it is unnecessary to

execute dialer in-band command.

z If ISDN BRI/PRI interface is configured in Dialer Profile mode, it is necess ary to

execute no dialer in-band command first.

Described below are the configurations of Legacy DDR, Dialer Prof ile, callback and

special functions.

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.

1) Call to a single point

Step 1: enable DDR.