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300-815 · Question #68
300-815 Question #68: Real Exam Question with Answer & Explanation
The correct answer is B: Require: 100rel. See the full explanation below for the reasoning.
Cisco Unified Border Element
Question
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?
Options
- AContent-Disposition: session:handling=required
- BRequire: 100rel
- CContent-Type: application/sdp
- DContact: <sip:[email protected]:5060>
Topics
#SIP Headers#PRACK (100rel)#Cisco CUBE#SIP Troubleshooting
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