Huawei v200r001 user manual Configuring Callback, Bind physical interfaces for a dialer pool

User Manual - Configuration Guide (Volume 3)		Chapter 1
Versatile Routing Platform		DDR Configuration
Table DC-1-22Configure the features of the dial interface
	Operation	Command
	Set fast-idle time	dialer fast-idle seconds
	Set idle-timeout time	dialer idle-timeout seconds
	Set wait-for-carrier-time	dialer wait-for-carrier-time seconds
	Set autodial interval	dialer autodial-interval seconds

V. Bind physical interfaces for a dialer pool

The following steps are enough to bind a physical interface for a Dialer Pool.

Table DC-1-23Configure a physical interface for a dialer pool

Operation	Command
Enter the configuration mode of the designated physical	interface interface-type interface-number
interface (used in global configuration mode)
Select PPP encapsulation (used in the configuration mode of	encapsulation ppp
the designated physical interface)
Set CHAP authentication (used in the configuration mode of the	ppp authentication chap
designated physical interface)
Designate this interface as a member of a Dialer Pool, and set
its priority (use this command again to designate this interface	dialer pool-member number [ priority priority ]
as a member of another Dialer Pool at the same time) (used in
the configuration mode of the designated physical interface)

1.4.3Configuring Callback

I.The significance of callback

Callback enables “call receiver” to call back “call sender” so as to:

z Enhance security: in callback processing, Server end calls Client (as above) end according to locally configured call number, thus avoiding insecurity due to disclosed user name and password.

z Save call charge (when the charge rates of two directions are different). z Change charge bearer.

z Combine charge lists.

II. Terms and abbreviations

zClient end: the first call originator, which requires the opposite end to call back the local end.

zServer end: the first call receiver, which will call back the opposite end.

III. Functions implemented by callback

Callback requires the common participation of two ends, one as Client end and the other as Server end. The basic operation flow is: Client end originates a call as “call sender”, Server end determines whether to call back; if so, Server end disconnects the incoming call, and sends a call to Client end.

VRP1.3 implements the following two callback functions:

1)In PPP callback, the following supports are considered:

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