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NEW QUESTION 35
Cisco SIP IP telephony is implemented on two floors of your company. Afterward, users report intermittent voice issues in calls established between floors. All calls are established, and sometimes they work well, but sometimes there is one-way audio or no audio. You determine that there is a firewall between the floors, and the administrator reports that it is allowing SIP signaling and UDP ports from 20000 to 22000 bidirectionally. What are two possible solutions? (Choose two.)

• A. Go to the SIP profile assigned to these IP phones in Cisco Unified CM and change the range of media ports to 16384-32767
• B. Ask the firewall administrator to change the range of UDP ports to 16384-32767.
• C. Go to System Parameters in Cisco Unified Communications Manager and change the range of media ports to 20000-22000.
• D. Ask the firewall administrator to change the ports to TCP.
• E. Go to the SIP profile assigned to these IP phones in Cisco Unified CM and change the range of media ports to 20000-22000.

Answer: A,B

Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/9_1_1/ CUCM_BK_T2CA6EDE_00_tcp-port-usage-guide-91/CUCM_BK_T2CA6EDE_00_tcp-port-usage-guide- 91_chapter_01.html

NEW QUESTION 36
Refer to the exhibit.

While troubleshooting call failures on the Cisco Unified Border Element, an administrator notices that messages are being sent to the service provider, but there is no response The administrator later learns that this SIP provider does not support PRACK. Which header should be removed from the SIP message to resolve this issue?

• A. Require 100rel
• B. Content-Disposition: session:handling=required
• C. Contact <sip:[email protected]:5060>
• D. Content-Type: application/sdp

Answer: A

NEW QUESTION 37
When the services key is pressed Cisco Extension Mobility does not show up. What is the cause of the issue?

• A. Cisco Extension Mobility Service is not running.
• B. The URL configured for Cisco Extension Mobility is not correct.
• C. The phone is not subscribed to Cisco Extension Mobility Service.
• D. Cisco Extension Mobility is not enabled in the Phone Configuration Window (Device > Phone)

Answer: C

Explanation:
Section: Mobility

NEW QUESTION 38
End users at a new site report being unable to hear the remote party when calling or being called by users at headquarters. Calls to and from the PSTN work as expected. To investigate the SIP signaling to troubleshoot the problem, which field can provide a hint for troubleshooting?

• A. Allow: header if the 200 OK response
• B. c= line of SDP content
• C. Contact: header of the 200 OK response
• D. o= line of SDP content

Answer: D

Explanation:
Section: Signaling and Media Protocols

NEW QUESTION 39
Which IOS command creates a SIP-enabled dial peer?

• A. dial-peer voice 20 pots
• B. dial peer voice 20 sip
• C. voice dial-peer 20 sip
• D. dial-peer voice 20 voip

Answer: D

Explanation:
Reference:
https://www.ciscopress.com/articles/article.asp?p=664148&seqNum=6

NEW QUESTION 40
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