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Designing ISDN Internetworks 11-33

Network Management

The isdn caller interface conﬁguration command conﬁgures caller ID screening. For example, the

following command conﬁgures a BRI to accept a call with a delivered caller ID having 41555512

and any numbers in the last two positions:

isdn caller 41555512xx

Called Party Number Veriﬁcation

When multiple devices and a router share the same ISDN local loop, you can ensure that the correct

device answers an incoming call by conﬁguring the device to verify the called party number and the

subaddress delivered by the switch as part of the setup message against the device’s conﬁgured

number and subaddress.

To conﬁgure called party number veriﬁcation on the router, apply the isdn answer1 or isdn answer2

interface conﬁguration command to the BRI. These commands allow you to specify the called party

number or the subaddress number, or both.

If you do not use the isdn answer1 command or the isdn answer2 command, the router processes

and accepts all incoming calls.

Calling Number Identiﬁcation

This feature applies only to routers used in Australia. A router that connects to a Australian TS013

or TS014 central ofﬁce switch may want to supply the network with a billing number for outgoing

calls. The Australian network offers a better tarifﬁng on calls in which the number is presented.

To conﬁgure the interface to identify the billing number, use the isdn calling number interface

conﬁguration command.

Network Management

The Simple Network Management Protocol (SNMP) uses management information bases (MIBs) to

store information about network events. Currently, no industry-standard ISDN MIB is available, but

as of Cisco IOS Software Release 10.3(3), two Cisco ISDN MIBs are available. With these MIBs,

SNMP-compliant management platforms (for example, HP OpenView or SunNet Manager) can

query Cisco routers for ISDN-related statistics.

The Cisco ISDN MIB focuses primarily on ISDN interface and neighbor information. It deﬁnes two

MIB groups: demandNbrTable and demandNbrEntry. Table 11-5 lists some of the MIB variables

that are available in the ISDN MIB.

Table 11-5 Cisco ISDN MIB Variables

MIB Object Description

demandNbrPhysIf Index value of the physical interface that the

neighbor will be called on; on an ISDN interface,

this is the ifIndex value of the D channel

demandNbrMaxduration Maximum call duration in seconds

demandNbrLastduration Duration of last call in seconds

demandNbrAcceptCalls Number of calls accepted from the neighbor

demandNbrRefuseCalls Number of calls from neighbor that the router has

refused

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Cisco 1003 - 1003 Router Manual de usuario Pagina 33