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. |