13 · Dynamics contact center
The published weights tell you where to spend the week.
As of the study guide accessed 14 October 2026, the skills are deploy 15–20, channels 30–35, agents and AI 10–15, work distribution 10–15, representative experience 15–20, and analytics 10–15. Passing score is 700. The public page allows 120 minutes.
The beta discount ran through 18 June 2026. Treat the exam as the live contact-center certification and confirm the seat on Learn the week you book. Practice tests for MB-280 will not prepare you.
AB-250 is the contact-center exam. Spend the most time on channels, and confirm the guide before you book.
AB-250, 700 to pass, channels are the biggest slice, MB-280 practice tests are the wrong pile.
If it fails: A study plan is a folder of MB-280 questions.
A colleague reports: An exam candidate can describe Copilot and cannot trace a voice channel. Where do you start?
An exam candidate can describe Copilot and cannot trace a voice channel. Spend the study time on channel setup and routing. Source: https://learn.microsoft.com/en-us/credentials/certifications/resources/study-guides/ab-250 accessed 2026-10-14.
Which description of Skill-based routing is accurate?
Assignment that prefers a representative who has the skill the classification step wrote on the work item. Skills that exist on a slide and not on the user do nothing. Source: https://learn.microsoft.com/en-us/credentials/certifications/resources/study-guides/ab-250 accessed 2026-10-14.
A colleague reports: Every item requires a skill nobody has, so the queue never assigns. Where do you start?
Every item requires a skill nobody has, so the queue never assigns. Attach skills to people and to the classification rules, then test a miss. Source: https://learn.microsoft.com/en-us/credentials/certifications/resources/study-guides/ab-250 accessed 2026-10-14.
Around the call: compliance recording, workforce management, emergency location, analytics, CRM screen pop, and an agent with a human escape. Each one has its own failure.
A study plan is a folder of MB-280 questions.
Cisco CUBE is one of the SBC families named in this lab’s certification lesson. A certified release can be the Direct Routing SBC between Unified CM and Teams.
The tenant still needs a verified domain on the SBC FQDN, and the user still needs Teams Phone. The studio translator does not open a live AXL session. Confirm the current certified release before you build.
Teams Phone and Webex Calling are separate clouds. This lab does not describe a feature that registers a Webex Calling user into a Teams tenant.
A number move is usually a carrier port, a certified SBC, or a meetings interop product. Confirm before relying.
Unified CCE stays the ACD until you migrate it. Microsoft’s contact-center articles name Connect, Extend, and Unify. They do not name a UCCE connector in the notes this lab cites.
Voice into Teams is still Direct Routing or Operator Connect. The routing script stays on the contact-center product you bought. Confirm the vendor’s current model. Source: https://learn.microsoft.com/en-us/microsoftteams/teams-contact-center.
Copilot Studio, Azure Communication Services, and Graph are later tracks in this lab. Treat any uncited limit as confirm before relying.
Opened 2026-10. A row marked confirm did not open. Wikipedia is background. The Teams blog row is the community index.
