Nortel
920-431 Comm Server 1000 Rls.5.0 Installation and Troubleshooting
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QUESTION: 50 A Nortel customer enabled SIP/TLS between two Communication Server(CS) 1000E Rls.5.0 systems and can conference SIP calls between Nortel IP telephones but cannot conference in third party SIP telephones. Which change in LD 14 is required on all SIP trunks to allow the conferencing of third party SIP telephones?
A. B. C. D.
CLS - MSBT CLS - MSAW CLS - CMSD CLS - MSNV
Answer: D
QUESTION: 51 A customer is reporting problems with several, but not all, IP telephones. You have isolated the problem to one media card. You perform a STAT SERV in LD 117 and find that the Voice Gateway Media Card (VGMC) in question has a PBXLINK status showing LOST. What does this mean?
A. B. C. D.
The incorrect type of network cable is being used. The media card for the Primary Signaling Server has failed. The IP telephones cannot obtain a valid IP address. The ELAN connection is down between the Call Server and the VGMC.
Answer: D
QUESTION: 52
A customer has a Communication Server 1000 Rls. 5.0 High Availability (HA) system.
The on-site technician reports that the Media Card is unable to register with the Call
Server after a reboot and displays an F:04 error code on the LED faceplate display. After
researching the error code, you have determined that the Watchdog Timer Test has failed.
Which task should you perform next to resolve this Media Card fault?
A. Replace the Media Card. B. Replace the Compact Flash. C. Replace the Signaling Server.
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D. Replace the Clock Controller.
Answer: A
QUESTION: 53 A Call Center reports that its callers are receiving an overflow tone and are experiencing blocked calls during peak office hours. After reviewing the zone parameters in Overlay (LD) 117, you have determined that all IP telephone users in the company are assigned to Zone 8, a shared zone. Which action should you take to ensure that the Call Center traffic have dedicated bandwidth resources?
A. Ensure that IP telephones in the Call Center are assigned to a private zone. B. Change the CODEC assignment for IP telephones in the Call Center to G.711. C. Verify that IP telephones in the Call Center register to the Failsafe Signaling Server. D. Install a dedicated Media Gateway Controller (MGC) for IP telephones in the Call Center.
Answer: A
QUESTION: 54 A customer has changed the PWD1 on the Call Server and is unable to log into the Voice Gateway Media Card (VGMC) with the new password. You do not want to reboot the MC, because the site is a Call Center with a very high call volume. Which action would you perform to synchronize the password between the Call Server and the MC?
A. B. C. D.
Disable and re-enable the Media Card Ethernet ports. Disconnect and reconnect the Media Card TLAN cable. Perform an LD 43: Equipment Data Dump on the Call Server. Re-install the database on the Media Card's Compact Flash.
Answer: C
QUESTION: 55 A multi-site Communication Server (CS) 1000M Rls 5.0 system is networked to a thirdparty IP-PBX via IP Peer Networking. Calls from the CS 1000M to the third-party switch have recently started to fail on about 10% of call attempts during the busy hour. Fast busy
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is experienced and far-end does not ring. Which three actions should you take to determine the root cause of these call failures? (Choose three.)
A. Verify the Network Class of Service (NCOS) settings for the system against the routing requirements. B. Verify that all the IP telephones used on the failed calls are registering and functioning normally. C. Verify that the link between the Network Routing Service (NRS) and the Fail Safe Signaling Server is operational. D. Determine if the third-party switch users are experiencing similar or other problems when they originate calls to the CS 1000M system. E. Check logs and Operational Measurement (OM) reports to determine if there is a network alarm or call-blocking (call volume/bandwidth) problem to third-party switch.
Answer: A, D, E
QUESTION: 56 A customer has a Communication Server (CS) 1000 Rls. 5.0 system at the main campus and another at a remote site. Remote IP telephone users are reporting call failures, such as dropped calls and a fast busy tone, during peak office hours. Which action should you take to determine the root cause of the call failures?
A. Print a Terminal Number Block and verify that all IP telephones have the same Class of Service (CLS) access restriction. B. Access Operational Measurement (OM) reports in Element Manager to see if a network alarm or call blocking problem is indicated. C. Examine the Trunk Group Access Restrictions (TGAR) settings for the IP telephones against the routing requirements in the Route Data Block. D. Determine if the third-party switch users are experiencing similar or other problems when they originate calls to the CS 1000 system.
Answer: B
QUESTION: 57 While attempting to log into a Communication Server 1000 Rls. 5.0 system using Element Manager, you receive the following message: WEB3003: Destination IP address cannot be reached, initial RPC fail. Which signaling server command will verify that both the ELAN link is established and the Call Server IP address is correct?
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A. B. C. D.
Use stat elnk from Overlay (LD) 137. Use pbxLinkShow from "oam>" shell of the Signaling Server. Use the stat elnk command from "oam>" shell of the Signaling Server. Use the itgCardShow command from the "oam>" shell of the Signaling Server.
Answer: B
QUESTION: 58 A customer site with a Communication Server 1000E system has multiple elements in a node. The customer has reported that an 1140E IP telephone in the node is constantly rebooting and downloading firmware. To isolate the problem, the technician will verify that each element in the node has the same F/W version installed, since only one F/W version can be installed on a given node. Which command displays the firmware version that will be downloaded to the IP telephone?
A. B. C. D.
firmwareVersionShow umsPolicyShow IPInfoShow swVersionShow
Answer: B
QUESTION: 59 A Communication Server 1000 Rls. 5.0 customer has received reports from outside callers that occasionally there are loud bursts of static interfering with conversations. Upon further investigation and monitoring, you have determined that this noise is present on all PRI trunk cards in the system. The Media Gateway Controller (MGC) log file did not provide any additional information to help you resolve the problem. Which step should you take next to determine the root cause of the problem?
A. B. C. D.
Check for loose cabling on a digital trunk card. Upgrade MGC loadware/firmware to the next release. Determine if there was a Signaling Server hardware failure. Look for a clock controller failure in one of the Media Gateways.
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Answer: D
QUESTION: 60 After using the DSPselfTest command to initiate a Media Card self test, you observe that the self test has failed. How do you resolve this issue?
A. B. C. D.
Replace the Media Card. Warm boot the Media Card. Update the Media Card database. Replace the Media Card TLAN cable.
Answer: A
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