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300-820 · Question #216
300-820 Question #216: Real Exam Question with Answer & Explanation
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Cisco Unified Communications Manager with Webex Calling
Question
A company identifies a fraudulent toil situation. An engineer reviews the Cisco UCM call detail records and discovers that fraudulent calls originate from a Cisco Expressway-C server and are then routed to a 10-digit PSTN number. What must be configured to limit incoming Expressway calls to the internal Cisco UCM range of extensions 5XXXX?
Options
- Acalling search space that contains all the partitions on the Unified Communications Manager SIP
- Bcall policy rule from the DNS zone to allow a destination regex pattern of \d.*@abc.com
- Cunique search rule with a regex pattern of [5]\d{4}@abc.com that targets the neighbor zone
- Dcall policy rule from the DNS zone to allow a destination regex pattern of .*@abc.com
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Topics
#Cisco UCM Calling Search Space (CSS)#SIP Trunk Configuration#Expressway-C Call Flow#Call Restriction