Summary Cont

BRI supports HDLC encapsulation and 64 kbps by default.

PPP encapsulation is more advantageous because of its LCP options such as PAP, CHAP, Multilink.

Some ISDN switches require the configuration of SPID numbers.

BRI supports CLID and called-party number verification.

Use rate adaption for 56 kbps.

© 2004 Cisco Systems, Inc. All rights resei^ed. bcran v2.1—6-15


Use the practice items here to review what you learned in this lesson. The correct answers are found in the Quiz Answer Key.

Q1) What is the data rate of one ISDN B channel?

A) 48 kbps

B) 56 kbps

C) 64 kbps

D) 128 kbps

Q2) Which ISDN channel is always active and in communication with the ISDN switch while using the Q.931 signaling protocol?

Q3) Which ISDN channel carries network layer protocols for data transmission?

Q4) Which type of configuration task category does configuring ISDN addressing fall into?

A) global

B) interface

C) standard

D) primary

Q5) Which configuration task category level applies to specifying the ISDN service provider CO switch type?









Q6) Which Cisco router global command is used to specify the CO switch to which the router connects?

A) isdn router-type

B) isdn switch-type

C) isdn hub-type

D) isdn bridge-type

Q7) Which Cisco router command designates the interface that is used for ISDN on a router acting as a TE1 device?

A) interface serial interface-number

B) interface Ethernet interface-number

C) interface bri interface-number

D) interface ISDN interface-number

Q8) The dial-in numbers that an ISDN service provider CO site switch might require are known as_?

A) service provider identifiers (SPIDs)

B) service profile identifiers (SPIDs)

C) service profile interface devices (SPIDs)

D) service provider interface devices (SPIDs)

Q9) Which Cisco router command is used to configure ISDN CLID screening?

A) caller ID

B) isdn caller

C) ID caller

D) ID caller


Rate adaption allows


lower speed


higher speed


speed of 128


speed of 256

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