About This Flashcard Deck
This flashcard deck contains 10 cards covering key Collaboration Core concepts for the CLCOR exam. Test your CLCOR knowledge. Use active recall by attempting to answer each question before revealing the answer.
Question
What is a CUCM Calling Search Space (CSS)?
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Answer
An ordered list of partitions that determines which destinations a phone or device can reach.
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All Collaboration Core Flashcards
Q: What is a CUCM Calling Search Space (CSS)?
A: An ordered list of partitions that determines which destinations a phone or device can reach.
Q: What is MRA?
A: Mobile and Remote Access — allows endpoints to register with CUCM through Expressway without VPN.
Q: What DSCP value is used for voice (EF)?
A: DSCP 46 (Expedited Forwarding).
Q: What protocol does CUCM use for IP phones?
A: SIP or SCCP (Skinny). SIP is the modern standard; SCCP is legacy.
Q: What is Unity Connection?
A: Cisco voicemail/messaging platform that integrates with CUCM for voice messaging, auto-attendant, and speech recognition.
Q: What is SRTP?
A: Secure Real-time Transport Protocol — encrypts voice/video media streams. Requires TLS for signaling.
Q: What is AXL?
A: Administrative XML Layer — SOAP-based API for reading/writing CUCM database (phones, users, dial plan).
Q: What is Expressway?
A: Cisco Expressway provides firewall traversal for collaboration traffic (H.323/SIP), B2B calling, and MRA.
Q: What is IM&P?
A: Instant Messaging & Presence — provides real-time presence (available, busy, DND) and messaging integrated with CUCM.
Q: What is a route group in CUCM?
A: A prioritized list of gateways or SIP trunks used for call routing failover.
Cisco Flashcard Study Strategy
Cisco exams heavily test protocol operations and configuration details. Use these flashcards to drill port numbers, protocol behaviours, and administrative distances. Pair flashcard sessions with Packet Tracer labs — when you encounter a card about OSPF neighbour states, open a lab and verify each state transition on a live topology. This combination of memorisation and practice builds the deep understanding Cisco exams demand.