Cisco 300-815 CLACC Advanced Call Control Practice Exam
Cover all five domains on Cisco’s current CLACC v2.0 blueprint — signaling and media protocols, session border controller and voice gateway technologies, advanced call control, supplemental features and security, and remote connectivity — with objective-mapped questions, instant feedback in Learn mode, and a full timed simulation in Exam mode.
Start 24-hour free trial →This exam was renamed and re-versioned on February 3, 2026. The exam number 300-815 is unchanged, but almost everything around it moved:
Old: CLACCM — Implementing Cisco Advanced Call Control and Mobility Services v1.2. Current: CLACC — Implementing Cisco Advanced Call Control On-Premises v2.0.
The domain structure was rebuilt rather than simply reweighted: v2.0 introduces Session Border Controller and Voice Gateway Technologies as the heaviest domain at 30%, splits out Supplemental Features and Security, and folds mobility into that domain instead of headlining it. Study material written for CLACCM v1.2 is misaligned with the current blueprint — and because the exam number did not change, outdated material is easy to mistake for current. Search by 300-815 CLACC v2.0 rather than by the old acronym. The page below reflects the v2.0 topics.
300-815 CLACC exam at a glance
- Vendor
- Cisco
- Exam code
- 300-815
- Exam name
- Implementing Cisco Advanced Call Control On-Premises (CLACC)
- Former name
- CLACCM — Implementing Cisco Advanced Call Control and Mobility Services (through February 2, 2026)
- Blueprint
- Cisco exam topics v2.0, effective February 3, 2026 — five domains weighted 30 / 25 / 20 / 15 / 10
- Certification earned
- Cisco Certified Specialist – Collaboration Call Control & Mobility Implementation
- Counts toward
- CCNP Collaboration (satisfies the concentration requirement alongside the 350-801 CLCOR core), and toward recertification
- Duration
- 90 minutes
- Question count
- Cisco does not publish a fixed item count for this exam
- Passing score
- Cisco does not publish a fixed passing score; cut scores are set by psychometric analysis and are not disclosed
- Prerequisites
- None formally required. Cisco recommends practical experience with on-premises Cisco collaboration call control.
- Cost (USD)
- $300 USD, or redeem Cisco Learning Credits (regional pricing varies)
- Delivery
- Pearson VUE; scheduled through the Cisco certification portal
- Languages
- English
Sources: Cisco — 300-815 CLACC exam page · Cisco — CLACC v2.0 exam topics (PDF). Verify current details with Cisco before scheduling.
About the Cisco 300-815 CLACC certification
CLACC is the on-premises call control concentration for CCNP Collaboration. Pass it and you earn the standalone Cisco Certified Specialist – Collaboration Call Control & Mobility Implementation credential; pair it with the 350-801 CLCOR core exam and you complete the full CCNP Collaboration certification. Following the February 2026 refresh it is also the deliberate on-premises choice: Cisco rebalanced the track so that CLACC covers the on-premises world while 300-820 CLHCT covers hybrid and cloud and 300-830 CLCCE covers Webex Contact Center.
The v2.0 blueprint is troubleshooting-led. Read the verbs and the emphasis is unmistakable: troubleshoot advanced elements of a SIP conversation, troubleshoot CUBE dial plan elements using VoIP Trace and debugs, troubleshoot globalized call routing in Unified CM, troubleshoot Unified CM mobility, troubleshoot a business-to-business collaboration solution. This is an exam about diagnosing a call that is not behaving, not about reciting feature lists. Expect scenarios where a call fails mid-dialog and you must reason from signaling behaviour to root cause.
Every PowerKram question maps to one of the five v2.0 domains and cites the Cisco document it was derived from, so a weak score becomes a specific reading list rather than a vague instruction to study more. For context on how Cisco's certification tracks fit together, see our guide to how IT certification tracks are structured.
300-815 CLACC exam domains and weights (v2.0 blueprint)
Cisco publishes five weighted domains in the v2.0 exam topics document. The weights sum to 100%. Session Border Controller and Voice Gateway Technologies is the single heaviest area, and together with Advanced Call Control it accounts for over half the exam.
Configuring Cisco UCME and SIP SRST; troubleshooting Cisco Unified Border Element dial plan elements with VoIP Trace and debugs, covering DTMF interoperability, codec preference lists, SIP and SDP header manipulation with SIP profiles, signaling and media bindings, and TLS profiles with SRTP; advanced dial peer features including URI matching, dial peer groups, E.164 pattern maps, voice VRF, and hunt stop; advanced SIP interoperability including video interworking, media flow-through and flow-around, LTI transcoders, and secure SIP trunk interoperability.
Advanced SIP interoperability with Cisco UCM including EO/DO interoperability, SIP normalization and transparency, SIP profiles, and SIP trunk security profiles; call recording options covering network-based gateway recording (XMF), SIPREC, and built-in bridge; troubleshooting globalized call routing across route patterns, route groups and lists, translation and transformation patterns, local route group, time-of-day routing, partitions and calling search spaces, forced authorization codes, and urgent priority.
Certificate management in Cisco UCM including trust store usage, secure phone registration, and phone security profiles; supplementary functions such as call park, call pick-up, hunt groups, call queuing with announcements, music on hold, barge, and BLF; troubleshooting Cisco UCM mobility across Unified Mobility, Extension Mobility, and Extend & Connect; and configuring ILS, URI synchronization, and GDPR.
Configuring and troubleshooting a Mobile and Remote Access solution; Expressway media traversal and protocol interworking across IPv4 and IPv6; encrypted calling in Expressway using TLS, MTLS, zone media encryption modes, and certificate management including the ACME protocol; Expressway security covering toll fraud prevention, automated intrusion detection, and firewall rules; troubleshooting business-to-business collaboration across DNS records, certificates, traversal, neighbor and DNS zones, transforms, search rules, and SIP trunk integration with Cisco UCM.
Troubleshooting advanced elements of a SIP conversation including ring back, PRACK, and UPDATE; describing media optimization features and NAT traversal protocols such as STUN, TURN, and ICE; troubleshooting mid-call signaling covering hold and resume with new media, blind and consultative transfer via REFER or re-INVITE, conferencing and barge, and session timers, retries, and refresh.
Source: Cisco — Implementing Cisco Advanced Call Control On-Premises v2.0 (300-815) exam topics. Cisco notes that other related topics may appear on any specific delivery of the exam.
Who the 300-815 CLACC exam is for
CLACC targets engineers who already run on-premises Cisco collaboration and want to formalise the deep call-control skills the job demands. Cisco sets no formal prerequisite, but the blueprint assumes you can read a SIP ladder diagram and are comfortable at a CUBE CLI.
- Collaboration and voice engineers who configure and troubleshoot Unified CM dial plans, SIP trunks, and gateway integrations day to day.
- CUBE and SBC specialists working on carrier SIP trunk interoperability, header manipulation, codec negotiation, and secure trunking.
- Unified Communications administrators in regulated sectors where on-premises deployment persists for compliance and data-sovereignty reasons.
- CCNP Collaboration candidates choosing a concentration after the 350-801 CLCOR core — CLACC if your world is on-premises call control, CLHCT if it spans hybrid and cloud.
If you were studying the retired 300-810 CLICA applications exam, CLACC is the natural landing spot when your focus is call handling and integration rather than voicemail and presence. To see where on-premises collaboration engineering leads in terms of roles and progression, review the IT administration career paths this certification supports.
What this 300-815 CLACC practice exam delivers
Learn mode
Get the correct answer, why each distractor fails, and a direct link to the Cisco document behind it — immediately after each question. Most valuable across CUBE dial peer behaviour, where a single misordered SIP profile changes the outcome.
Exam mode
A full 90-minute timed simulation matching the real CLACC sitting, so you build pacing on troubleshooting scenarios that reward reading the signaling flow before the options.
Source-linked explanations
Every answer cites the Cisco documentation it derives from — the CUBE configuration guide, Unified CM system configuration guide, Expressway MRA deployment guide, and the CLACC v2.0 exam topics.
Score by v2.0 domain
Results break down across the five current blueprint domains, so you know whether to revisit SBC and gateway technologies, advanced call control, supplemental features, remote connectivity, or signaling protocols.
Sample 300-815 CLACC practice questions
Ten free questions spread across the five current v2.0 domains, each with a full explanation and a source link to the Cisco documentation it was built from. The complete bank is available with the 24-hour trial.
Two endpoints behind separate NATs need to establish media directly where possible, falling back to a relay only when direct connectivity fails. Which framework governs that candidate selection?
- PRACK for provisional response acknowledgement
- ICE, using STUN for candidate discovery and TURN for relay
- SIP session timers with periodic refresh
- SRTP key exchange over a TLS trunk
Show answer & explanation
Correct: B — ICE, with STUN and TURN. The blueprint groups media optimization and NAT traversal as STUN, TURN, and ICE. ICE is the framework that gathers and tests candidate addresses, STUN discovers the public mapping, and TURN provides a relay when direct paths fail.
Why not the others: PRACK (A) acknowledges provisional responses to make early dialog reliable; it does nothing for NAT. Session timers (C) detect stale dialogs and trigger refresh, unrelated to media path selection. SRTP over TLS (D) secures media and signaling but does not negotiate connectivity candidates.
Source: Cisco — CLACC v2.0 exam topics, media optimization and NAT traversal → Further reading: PowerKram — How IT certification tracks are structured →During a consultative transfer, which SIP method does the transferor typically send to instruct the far end to contact the transfer target?
- OPTIONS
- REGISTER
- REFER
- SUBSCRIBE
Show answer & explanation
Correct: C — REFER. Cisco documents that when a party makes a transfer, a SIP REFER message is triggered and sent toward CUBE for the transfer to proceed. The blueprint lists call transfer via refer or reinvite as a mid-call signaling troubleshooting topic.
Why not the others: OPTIONS (A) queries capabilities and is commonly used as a keepalive on dial peers. REGISTER (B) binds an address of record to a contact and has no transfer role. SUBSCRIBE (D) requests event notification, used for features such as BLF rather than transfer.
Source: Cisco — CUBE dial peer matching and REFER handling →A carrier rejects calls from CUBE because a SIP header is formatted incorrectly. Which CUBE feature modifies that header before the message leaves the device?
- An outbound SIP profile applied at the dial-peer, tenant, or global level
- A codec preference list
- A voice VRF definition
- A hunt stop configuration
Show answer & explanation
Correct: A — an outbound SIP profile. SIP profiles carry rules that add, remove, copy, or modify SIP, SDP, and peer headers entering or leaving CUBE. Outbound profile manipulation occurs as the final step before the message leaves the device, after destination dial-peer matching, and profiles are applied at global, tenant, or dial-peer level.
Why not the others: A codec preference list (B) governs media negotiation, not header syntax. A voice VRF (C) separates voice traffic into a routing instance. Hunt stop (D) controls whether CUBE continues hunting to further dial peers after a failure.
Source: Cisco — CUBE SIP profiles → Further reading: PowerKram — Network engineer role and career path →An engineer must match many destination patterns on a single VoIP dial peer instead of creating a separate dial peer for each. Which construct achieves this?
- A translation pattern
- A calling search space
- A route list
- An E.164 pattern map linked to the dial peer
Show answer & explanation
Correct: D — an E.164 pattern map. Multiple Pattern Support lets you configure many patterns on one VoIP dial peer by creating an E.164 pattern map and linking it to one or more dial peers. A valid map enables the linked dial peers; an invalid one disables them. Where a dial peer has multiple patterns, the longest prefix wins.
Why not the others: Translation patterns (A), calling search spaces (B), and route lists (C) are all Unified CM dial plan constructs, not IOS XE dial peer configuration on CUBE.
Source: Cisco — Multiple pattern support on a voice dial peer →An inbound SIP profile is configured on a dial peer, but the message arrives with a malformed Request-URI and inbound dial peer matching fails. What happens to the profile application?
- The message is silently discarded before any profile is evaluated
- The global-level SIP profile configuration is applied instead
- The outbound profile on the egress dial peer is applied in its place
- CUBE retries dial peer matching until the header is corrected
Show answer & explanation
Correct: B — the global-level configuration applies. Cisco states that if inbound dial peer matching fails because required information could not be extracted from headers such as Request-URI, Via, From, or To, the global-level SIP profile configuration is applied. A request with an invalid SIP Request-URI is the example given.
Why not the others: The message is not discarded before profile evaluation (A) — that is the point of the global fallback. An outbound profile (C) acts on the egress leg after destination matching, not as an inbound substitute. CUBE does not loop retrying dial peer matching (D).
Source: Cisco — Inbound SIP profile processing order →A multi-site enterprise wants one set of route patterns nationally, with each site's off-net calls leaving through its own local gateway. Which Unified CM construct provides this?
- A forced authorization code
- Time-of-day routing
- Local route groups assigned via the device pool
- An urgent priority route pattern
Show answer & explanation
Correct: C — local route groups. Local route groups let off-net calls route to a gateway specified by the device pool rather than by the route pattern, so phones in different locations share a single set of route patterns while Unified CM selects the correct gateway. Cisco gives a single national dial plan as the worked example.
Why not the others: A forced authorization code (A) gates who may place a call, not which gateway carries it. Time-of-day routing (B) varies routing by schedule. Urgent priority (D) forces immediate routing on a pattern match rather than waiting for further digits.
Source: Cisco — Unified CM call routing and local route groups → Further reading: PowerKram — IT administrator role and career path →Dialed digits match a translation pattern in Unified CM. What does the system do next?
- Routes the call immediately to the gateway named in the pattern
- Performs the translation, then routes again using the calling search space configured within the translation pattern
- Rejects the call because translation patterns cannot terminate a call
- Applies the device pool calling search space and ignores the pattern
Show answer & explanation
Correct: B — translate, then route again with the pattern's own calling search space. Unlike a route pattern, a translation pattern does not send the call to an outside entity. Unified CM performs the translation first and then routes the call again, using the calling search space configured within the translation pattern.
Why not the others: Immediate gateway routing (A) describes a route pattern. The call is not rejected (C) — translation is a normal step in digit manipulation. The pattern's own calling search space governs the second lookup, not the device pool's (D).
Source: Cisco — Translation patterns and calling search spaces →Which Unified CM mobility feature lets a user log in at any physical phone and have their own extension, speed dials, and settings follow them?
- Extension Mobility
- Unified Mobility with Single Number Reach
- Extend & Connect
- Call park
Show answer & explanation
Correct: A — Extension Mobility. Extension Mobility applies a user's device profile to a shared physical phone at login, so the extension and personal settings follow the user. The v2.0 blueprint groups it with Unified Mobility and Extend & Connect under Unified CM mobility troubleshooting.
Why not the others: Unified Mobility with Single Number Reach (B) rings a remote destination such as a mobile alongside the desk phone rather than relocating the user's profile. Extend & Connect (C) lets a client control a non-Cisco endpoint. Call park (D) places a call on hold at a retrievable number.
Source: Cisco — CLACC v2.0 exam topics, Unified CM mobility →In a Mobile and Remote Access deployment, what is the correct traversal zone arrangement between the Expressway pair?
- One Unified Communications traversal zone per Expressway traversal pair
- One traversal zone per registered endpoint
- A traversal zone between the Expressway-C and a VCS Expressway
- No traversal zone is required when SIP is enabled
Show answer & explanation
Correct: A — one Unified Communications traversal zone per traversal pair. Cisco is explicit: configure only one Unified Communications traversal zone per Expressway traversal pair, meaning one on the Expressway-C cluster and one corresponding zone on the Expressway-E cluster.
Why not the others: Traversal zones are not per endpoint (B). Mixed traversal zones between VCS and Expressway are explicitly unsupported for MRA (C). A traversal zone is required regardless of SIP being enabled (D) — enabling SIP is a separate prerequisite step.
Source: Cisco — MRA configuration and traversal zones → Further reading: PowerKram — 300-820 hybrid and cloud exam →Which statement best describes what Mobile and Remote Access provides for an endpoint outside the enterprise network?
- It replaces Unified CM registration with a cloud-hosted call control service
- It requires a client VPN tunnel to be established before registration
- It restricts the remote endpoint to instant messaging only
- Registration, call control, provisioning, messaging, and presence are still provided by Unified CM, with Expressway supplying secure firewall traversal
Show answer & explanation
Correct: D — Unified CM still provides the services; Expressway provides traversal. MRA is part of the Cisco Collaboration Edge Architecture. It allows endpoints such as Jabber to have registration, call control, provisioning, messaging, and presence services provided by Unified CM while outside the enterprise network, with Expressway providing secure firewall traversal and line-side support.
Why not the others: Call control remains on-premises with Unified CM (A). MRA exists specifically to avoid requiring a client VPN (B). Full voice and video services are available, not messaging alone (C).
Source: Cisco — MRA overview and Collaboration Edge Architecture →Keep going: Learning & Career resources
On-premises call control rewards depth, but the wider collaboration landscape is shifting toward hybrid. Two PowerKram hubs back this exam.
Deep dive: CLACC format, what changed in v2.0, study path, and how it fits CCNP Collaboration
Exam format and how it is scored
CLACC is a 90-minute exam delivered in English through Pearson VUE. Cisco does not publish a fixed item count or a fixed passing score; cut scores are established through psychometric analysis and are not disclosed, so any specific pass percentage or question count quoted on a third-party site is an estimate rather than a published figure. Expect multiple choice and multiple response items with a heavy troubleshooting bias, reflecting how many blueprint sub-topics begin with the verb troubleshoot. See how certification exams are structured →
What actually changed in v2.0
This was a restructure, not a refresh. The exam name moved from Advanced Call Control and Mobility Services to Advanced Call Control On-Premises, signalling Cisco's deliberate split between on-premises and cloud concentrations. Session Border Controller and Voice Gateway Technologies became the heaviest domain at 30%, consolidating CUBE, UCME, and SIP SRST material that was previously more dispersed. Supplemental Features and Security emerged as its own 20% domain carrying certificate management, supplementary call features, and mobility — note that mobility is now a sub-topic rather than a headline domain, despite remaining in the credential name. Remote connectivity and business-to-business solutions were consolidated at 15%, and pure signaling protocol work was reduced to 10%. Read Cisco's announcement of the collaboration updates →
Where candidates lose marks
Three patterns recur. First, studying CLACCM v1.2 material without realising the blueprint changed — the exam number stayed the same, so stale study guides look current. Second, underestimating CUBE: at 30% it is the largest single investment, and the questions expect familiarity with VoIP Trace and debug output rather than just configuration syntax. Third, treating dial plan questions as memorisation when they are behavioural — you need to predict what Unified CM does with a given digit string across partitions, calling search spaces, translation patterns, and local route groups, in order.
Realistic study path
Most candidates with hands-on collaboration experience need eight to twelve weeks. A workable sequence: download the v2.0 exam topics and mark every sub-topic you have not personally configured or troubleshot; work the CUBE configuration guide alongside a lab where you can generate and read VoIP Trace output, since that skill is directly assessed; then build dial plan scenarios in Unified CM and predict the outcome before testing it; finish with MRA and Expressway, which reward a working deployment over reading. Cisco publishes a guided learning path for this exam. Cisco CLACC exam page and training options →
How CLACC fits the CCNP Collaboration track
CCNP Collaboration requires two exams: the 350-801 CLCOR core plus one concentration. Since February 2026 the concentration choices are CLACC (on-premises call control), 300-820 CLHCT (hybrid and cloud technologies), and 300-830 CLCCE (Webex Contact Center). The 300-810 CLICA applications exam and 300-835 CLAUTO automation exam were retired at the same time. Passing CLACC alone still earns the standalone Cisco Certified Specialist credential, and can be applied toward recertification. Cisco 350-801 CLCOR core exam →
Career outlook for on-premises call control engineers
The narrative that on-premises collaboration is disappearing is overstated. Cisco explicitly maintains the on-premises track for government, healthcare, and financial services organisations with security, compliance, and data-sovereignty requirements, and it holds a substantial share of the on-premises PBX market. Engineers who can troubleshoot a carrier SIP trunk at the CUBE and reason about a Unified CM dial plan remain scarce, and that scarcity is increasing as attention shifts to cloud. The strongest position is fluency in both: CLACC paired with hybrid knowledge makes you the person who can actually run a migration rather than only one side of it. IT administration career paths →
Frequently asked questions about the 300-815 CLACC exam
Was the 300-815 exam renamed?
What are the 300-815 CLACC exam domains and their weights?
What is the passing score for the 300-815 CLACC exam?
Is my CLACCM v1.2 study material still usable?
How much does 300-815 CLACC cost and how long is it?
What certification do I earn by passing 300-815 CLACC?
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