🚀 Launch Special: $29/mo for life --d --h --m --s Claim Your Price →
350-801
Coming Soon
Expected availability announced soon

This course is in active development. Preview the scope below and create a free account to be notified the moment it goes live.

Notify me
350-801 Cisco Systems Coming Soon

CCNP Collaboration Core

The CCNP Collaboration Core (CLCOR 350-801) certification exam validates expertise in designing, deploying, and troubleshooting Cisco unified communications, covering infrastructure, protocols, media resources, call control, and QoS.

120
Minutes
100
Questions
$400
Exam Cost

Who Should Take This

Network engineers, system administrators, or voice specialists with three to five years of hands‑on experience in Cisco UC environments should pursue this exam. They aim to deepen their knowledge of collaboration architecture, media handling, and QoS to advance to senior or lead roles.

What's Covered

1 All domains in the Cisco CCNP Collaboration Core (CLCOR 350-801) exam: Infrastructure and Design
2 , Protocols, Codecs, and Endpoints
3 , Cisco IOS XE Gateway and Media Resources
4 , Call Control
5 , QoS
6 , and Collaboration Applications

What's Included in AccelaStudy® AI

Adaptive Knowledge Graph
Practice Questions
Lesson Modules
Console Simulator Labs
Exam Tips & Strategy
20 Activity Formats

Course Outline

60 learning goals
1 Domain 1: Infrastructure and Design
4 topics

CUCM cluster architecture

  • Deploy Cisco Unified Communications Manager clusters with publisher and subscriber nodes, database replication, and device registration load distribution for enterprise voice services.
  • Evaluate CUCM deployment models including single-site, multi-site centralized, multi-site distributed, and clustering over WAN to recommend the optimal architecture for a given enterprise topology.
  • Design a highly available CUCM architecture with redundancy groups, failover priorities, and device pool assignments to ensure voice service continuity during server and network outages.

Edge and security infrastructure

  • Configure Cisco Expressway-C and Expressway-E traversal pair for firewall traversal, enabling secure remote endpoint registration and B2B calling without inbound firewall pinholes.
  • Implement Mobile and Remote Access on Expressway to extend CUCM registration and UC services to off-premises endpoints over TLS without requiring VPN client software.
  • Configure Expressway B2B SIP and H.323 call policies with search rules, transforms, and bandwidth controls to manage inter-enterprise video calling through the DMZ.

Conferencing and messaging infrastructure

  • Deploy Cisco Meeting Server with call bridges, web bridges, and TURN servers to provide on-premises multiparty conferencing with WebRTC guest access capabilities.
  • Configure Cisco Unity Connection for voicemail, auto-attendant, and unified messaging integration with CUCM using SCCP or SIP trunk connections for message waiting indicator support.
  • Implement Cisco IM and Presence Service for enterprise instant messaging, availability status, and persistent chat rooms integrated with CUCM user accounts and LDAP directories.

User management and directory integration

  • Configure CUCM LDAP integration for directory synchronization and authentication to leverage Active Directory for enterprise user provisioning and single sign-on credential management.
  • Implement CUCM certificate management including CA-signed certificates, certificate trust lists, and ITL/CTL for secure device registration and encrypted signaling across the collaboration infrastructure.
2 Domain 2: Protocols, Codecs, and Endpoints
4 topics

SIP protocol operations

  • Analyze SIP INVITE, 100 Trying, 180 Ringing, 200 OK, and ACK message exchanges to trace call setup sequences and diagnose registration and call establishment failures.
  • Evaluate SIP header fields including Via, Contact, Record-Route, and SDP bodies to assess call routing decisions, codec negotiation outcomes, and NAT traversal behavior.
  • Configure SIP trunk security profiles with TLS transport, digest authentication, and certificate validation to secure SIP signaling between CUCM clusters and SIP endpoints.
  • Design a SIP trunk security architecture applying TLS, SRTP, and digest authentication between CUCM, CUBE, and ITSPs to protect voice signaling and media from interception and tampering.

Media protocols and codecs

  • Compare voice codecs G.711, G.729, G.722, and Opus in terms of bandwidth consumption, MOS quality, processing overhead, and licensing to select appropriate codecs for WAN and LAN segments.
  • Analyze RTP and SRTP packet flows including sequence numbers, timestamps, SSRC, and DTMF relay (RFC 2833) to troubleshoot media quality issues such as jitter, packet loss, and one-way audio.
  • Configure video codec preferences and bandwidth allocation for H.264, H.265, and SIP multistream video to optimize conference quality within enterprise bandwidth constraints.

Legacy protocols

  • Compare SIP, H.323, MGCP, and SCCP protocols in terms of call control model, feature support, and scalability to evaluate migration paths from legacy to SIP-based deployments.
  • Configure MGCP gateway registration with CUCM for analog FXS/FXO port control and T1/E1 PRI interfaces on Cisco IOS voice gateways in legacy PSTN integration scenarios.

Endpoint provisioning

  • Deploy Cisco IP phone and soft client endpoints using CUCM auto-registration, BAT provisioning, and TFTP/HTTP firmware delivery for large-scale enterprise endpoint rollouts.
  • Configure Cisco Jabber and Webex client registration with CUCM using service discovery (DNS SRV, UDS) and certificate trust to enable softphone and UC feature access across platforms.
3 Domain 3: Cisco IOS XE Gateway and Media Resources
2 topics

CUBE and SIP trunking

  • Configure Cisco Unified Border Element as an enterprise SIP demarcation point with SIP trunks to CUCM, ITSP, and Webex Calling for centralized PSTN and cloud calling integration.
  • Implement CUBE dial-peer configuration with inbound and outbound SIP profiles, header manipulation, and codec transcoding to normalize signaling between heterogeneous SIP endpoints and trunks.
  • Configure CUBE high availability with box-to-box redundancy using SRTP fallback, call preservation, and checkpoint synchronization to maintain active calls during gateway failover events.
  • Analyze CUBE SIP debug traces and call detail records to diagnose call routing failures, codec mismatch, and interoperability issues between enterprise and service provider SIP trunks.

Voice gateway and media resources

  • Configure IOS XE voice gateway dial peers with digit manipulation using num-exp, translation rules, and voice translation profiles to adapt numbering formats between internal and external call legs.
  • Implement CUCM media resource groups and media resource group lists for transcoding, conferencing, MTP, and MOH to allocate DSP resources across the collaboration infrastructure.
  • Configure SRST and MGCP fallback on branch office gateways to provide survivable call processing and PSTN access during WAN failures that isolate remote sites from the central CUCM cluster.
  • Configure analog voice gateway FXS and FXO ports with dial-peer matching, DTMF relay, and fax passthrough settings for legacy device integration at branch office locations.
  • Design a voice gateway and media resource architecture selecting CUBE sizing, transcoder placement, and conferencing capacity to meet enterprise call volume and codec interworking requirements.
4 Domain 4: Call Control
3 topics

CUCM dial plan architecture

  • Configure CUCM route patterns, route lists, and route groups to establish a hierarchical call routing structure that directs calls through appropriate gateways and trunks based on dialed patterns.
  • Implement calling search spaces and partitions to create logical call routing boundaries that enforce class of service restrictions and prevent unauthorized toll calls.
  • Configure CUCM translation patterns and called/calling party transformations to normalize E.164 numbering, strip access codes, and prepend digits for globalized call routing.
  • Analyze CUCM call routing decision logic including closest-match pattern selection, CSS partition ordering, and digit analysis to trace call flow paths and diagnose misrouted or blocked calls.
  • Configure CUCM hunt groups, hunt lists, and line groups to distribute inbound calls across multiple agents with configurable distribution algorithms and overflow destinations.
  • Implement CUCM call park, call pickup groups, and directed call park to provide shared call handling features for departmental and lobby phone use cases.

Call admission control and globalization

  • Configure CUCM locations-based call admission control to limit the number of concurrent voice and video calls across WAN links based on available bandwidth per location.
  • Implement CUCM Automated Alternate Routing to reroute calls through the PSTN when WAN bandwidth is exhausted, configuring AAR groups and dial patterns for fallback call completion.
  • Design a globalized dial plan using E.164 numbering, route filters, and directory number normalization to support international calling, PSTN interconnect, and multi-country CUCM cluster deployments.

Intercluster and SIP trunk routing

  • Configure intercluster SIP trunks between CUCM clusters with ILS and GDPR to enable global dial plan replication and endpoint URI dialing across a multi-cluster enterprise deployment.
  • Implement SIP route patterns and SIP trunk routing to direct inter-site and PSTN calls through the appropriate CUBE or SIP trunks with failover to alternate gateways.
5 Domain 5: QoS
3 topics

QoS classification and marking

  • Configure DiffServ QoS classification and marking on enterprise switches and routers to assign DSCP EF for voice media, AF41 for video, and CS3 for call signaling traffic.
  • Implement trust boundaries at the network access layer to re-mark or trust DSCP values from collaboration endpoints while overriding markings from untrusted device types.

QoS queuing and scheduling

  • Configure LLQ with strict priority queuing for voice traffic and CBWFQ bandwidth guarantees for video and signaling to prevent collaboration quality degradation during network congestion.
  • Implement traffic policing and shaping policies at WAN interfaces to enforce bandwidth contracts and smooth burst traffic while preserving priority treatment for voice and video flows.
  • Configure wireless QoS with WMM, AVC, and EDCA parameters to prioritize voice and video traffic over the air interface for wireless collaboration endpoint deployments.

QoS design and analysis

  • Analyze voice quality metrics including MOS, R-value, jitter, latency, and packet loss to assess whether QoS policies are meeting collaboration service level objectives.
  • Design an end-to-end QoS policy framework for collaboration traffic across campus, WAN, and cloud segments, planning per-hop behaviors, bandwidth reservations, and CAC integration.
6 Domain 6: Collaboration Applications
4 topics

Cloud and hybrid collaboration

  • Configure Webex Calling integration with on-premises CUCM using local gateway (CUBE) for hybrid PSTN access and dial plan interworking between cloud and on-premises call control.
  • Implement Webex hybrid services including Calendar Connector, Directory Connector, and Call Connector to integrate on-premises Active Directory and CUCM with Webex cloud services.
  • Evaluate cloud-only, on-premises-only, and hybrid collaboration architectures to recommend the optimal deployment model based on feature requirements, regulatory constraints, and migration readiness.

Mobility and single number reach

  • Configure CUCM mobility features including Single Number Reach, mobile voice access, and device mobility to extend enterprise calling to mobile devices with seamless call control integration.
  • Implement extension mobility and device profiles on CUCM to allow users to log into any enterprise phone and receive their personal dial plan, speed dials, and service subscriptions.

Collaboration APIs and automation

  • Apply CUCM Administrative XML (AXL) SOAP API to programmatically provision users, phones, and dial plan elements for automated collaboration infrastructure management.
  • Implement Cisco Room Device xAPI commands to control video endpoint behaviors, create custom integrations, and automate room booking and meeting join workflows.
  • Apply Webex REST APIs to create bots, integrations, and webhooks that automate meeting management, messaging workflows, and user provisioning in Webex cloud collaboration environments.
  • Design a collaboration automation strategy integrating AXL, xAPI, and Webex APIs with configuration management tools to achieve infrastructure-as-code for UC provisioning and lifecycle management.

Collaboration monitoring and reporting

  • Apply CUCM RTMT and CDR/CMR analysis to monitor real-time system health, track call quality metrics, and identify capacity trending for proactive collaboration infrastructure management.
  • Analyze CDR and CMR data to correlate call quality degradation with network path issues, codec selection, and endpoint performance for targeted remediation of voice quality complaints.

Scope

Included Topics

  • All domains in the Cisco CCNP Collaboration Core (CLCOR 350-801) exam: Infrastructure and Design (20%), Protocols, Codecs, and Endpoints (20%), Cisco IOS XE Gateway and Media Resources (15%), Call Control (15%), QoS (10%), and Collaboration Applications (20%).
  • Collaboration infrastructure including Cisco Unified Communications Manager (CUCM), Expressway-C/E, Cisco Meeting Server (CMS), Unity Connection, IM and Presence Service, and Webex platform integration.
  • Collaboration protocols including SIP (signaling, registration, call flows), H.323, RTP/SRTP, MGCP, SCCP, and codec negotiation (G.711, G.729, Opus) for voice and video communications.
  • Cisco IOS XE voice gateways including CUBE, analog/digital gateway configuration, dial peers, digit manipulation, SIP trunk configuration, SRST, transcoding, and conferencing media resources.
  • Call control including CUCM dial plan design, route patterns, route lists, route groups, translation patterns, calling search spaces, partitions, globalized call routing, and call admission control.
  • Quality of Service for collaboration including DiffServ marking, classification, policing, shaping, LLQ, priority queuing, DSCP values for voice/video/signaling, and QoS policy design.
  • Collaboration applications including Webex Calling, Webex Meetings integration, single number reach, mobility features, and API-based automation using AXL, xAPI, and Webex REST APIs.

Not Covered

  • Enterprise routing, switching, and wireless infrastructure details that are covered by the ENCOR exam rather than CLCOR.
  • Contact center application design, scripting, and agent desktop configuration beyond basic CUCM integration points.
  • Third-party PBX migration details, legacy TDM switch administration, and carrier-side PSTN provisioning not tested on CLCOR.
  • Deep video production, streaming media server administration, and broadcast-quality video engineering outside collaboration endpoint scope.

Official Exam Page

Learn more at Cisco Systems

Visit

350-801 is coming soon

Adaptive learning that maps your knowledge and closes your gaps.

Create Free Account to Be Notified

Trademark Notice

Cisco®, CCNA®, CCNP®, CCIE®, and related marks are registered trademarks of Cisco Technology, Inc. Cisco does not endorse this product.

AccelaStudy® and Renkara® are registered trademarks of Renkara Media Group, Inc. All third-party marks are the property of their respective owners and are used for nominative identification only.