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718 CHAPTER 51: CONFIGURING DCC
Configuring
Resource-Shared DCC
Each RS-attribute set consists of a dialer interface, the attributes of the interface,
and a dialer bundle. Specifically,
■ Only one dialer number can be defined for a dialer interface. Since this dialer
number has its own dial attributes set, all the calls originated by dialing this
number can use the same DCC attribute parameters (such as dialing rate).
■ Each dialer interface can use only one dialer bundle, which contains multiple
physical interfaces of different priorities. However, each physical interface can
be used by different dialer bundles. For an ISDN BRI or PRI interface, the user
can set the number of B channels that will be used through setting dialer
bundles.
■ All the calls aimed to the same destination segment use the same RS-DCC set.
Due to the separation between logical and physical interface configurations,
resource-shared DCC are applicable for more network topologies and DCC dialing
requirements, especially for the situation in which multiple interface groups
originate calls to multiple remote interfaces.
Figure 232 Multiple interfaces placing calls to multiple remote ends in the
Resource-Shared DCC implementation
As shown in Figure 232, different dialer interfaces are used for placing calls to
different remote ends. (That is, one dialer interface only corresponds to one
remote end.) Through adding a physical interface to the bundle of some dialer
interfaces, the interface can originate calls as needed.
When configure resource-shared DCC based on RS-attribute set, a physical
interface only needs to be configured with the link layer protocol and the number
of the dialer bundle to which the physical interface belongs.
When configuring resource-shared DCC based on RS-attribute set, a RS-attribute
set is unable to apply its attributes to the physical interfaces in a dialer bundle. (For
example, it is unable to apply PPP authentication to the physical interfaces). In
other words, the physical interfaces do not inherit the authentication attribute of
the RS-attribute set. Therefore, authentication of the related information must be
configured on the physical interfaces at the receiving end.
Resource-Shared DCC configuration includes:
■ Enabing Resource-Shared DCC
■ Configuring the dialer interface and dialer number
■ Creating dialer bundle and assigning physical interfaces to it
Router
Remote end C
Single/Multiple interface(s)
Local end
(multiple interfaces)
Remote end B
Single/Multiple interface(s)
Remote end A
Single/Multiple interface(s)
if1
if2
if3
Physical interface
groups
Call
Remote end A
Call
Remote end B
Call
Remote end C
Dialer0
Dialer1
Dialer2
Router
Router
Router