1

What is a major drawback of using analog FXO trunks for inbound calls?

Answer:

The drawback is that no DNIS information is provided, so calls cannot be directly routed to their destination.

2

Which command must you include when configuring a CAMA type 4 (KP-NPD-NXX-XXXX-ST) trunk?

Answer:

You must use the ani mapping command to associate three-digit NPA numbers to a single-digit NPD.

3

You issue a show controller command on a digital trunk and see accumulated slip seconds in every interval. What could be the cause?

Answer:

Incorrect clocking configuration on the physical port can cause slips. For a PSTN connection, line clocking is typically used.

4

When you are trying to set up Q.931 backhaul on an ISDN PRI using CallManager MGCP, the isdn bind-l3 ccm-manager command is not recognized. What could cause this?

Answer:

The cause could be that you omitted the service mgcp keywords from the PRI group configuration on the controller for the physical interface.

   
5

What must you do prior to configuring a PRI group on an ISDN PRI circuit?

Answer:

You must configure an ISDN switch type globally on the Cisco voice gateway prior to configuring a PRI group on an ISDN PRI circuit.

6

Which signaling type is necessary if you want to receive ANI information on a T1 CAS trunk?

Answer:

E&M FGD is necessary if you want to receive ANI information on a T1 CAS trunk.

7

What are the two components of R2 signaling?

Answer:

Line signaling (supervisory control signals) and interregister signaling (call setup control) are the two components of R2 signaling.

8

If it is necessary to use the cas custom command to modify the signaling on an E1 R2 trunk, what is the recommended first step?

Answer:

Begin by configuring the country country use-defaults command under cas custom.

Категории