SIP over TLS toward the carrier
Signaling for The tenant boundary. Teams keeps the dialog. A 488 is codecs, not a greeting.
Diagrams
Each drawing is also a file. 130 files. Reduced motion still shows every hop.
Call queue routing
Serial distribution for Entra ID accounts voice will use. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for The admin-center map. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Exchange and Cloud Voicemail still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: What homed online means.
Location-based routing gate
A site map for The license stack. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Calling Plan flavors. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Teams Premium is not PSTN. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Round robin distribution for Resource account licenses. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for A license set you can defend. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. The module and the session still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Objects you will actually get.
Location-based routing gate
A site map for Grant, set, and new. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Reading a user before you change one. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for When the portal and the shell disagree. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Attendant distribution for Safety on a lab tenant. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for The port and DSCP table. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. VPN and the split tunnel still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Bandwidth you can calculate.
Location-based routing gate
A site map for Proving the mark survived. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for ExpressRoute is not the requirement. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Four ways to reach the PSTN. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Serial distribution for Calling Plans in practice. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Teams Phone Mobile. RTP may skip the processor. SIP does not.
SIP over TLS toward the carrier
Signaling for Direct Routing. Teams keeps the dialog. A 488 is codecs, not a greeting.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Mixing them in one tenant.
Location-based routing gate
A site map for Normalize, then route. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Dial plans and first match. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for PSTN usages are the permission. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Round robin distribution for Voice routes and gateways. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Islands mode and other hard stops. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Resource accounts for voice apps still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Auto attendant design.
Call queue routing
Serial distribution for Queue routing methods. Overflow is a configured target.
Dynamics unified routing
Language, intent, and capacity for Timeout, overflow, and outbound funding. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Nested voice apps. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Longest idle distribution for Numbers on voice apps. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Dynamic location. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Calling Plans versus Direct Routing emergency still needs a human escape.
Location-based routing gate
A site map for Location-based routing. LBR is toll-bypass control, not emergency location by itself.
Location-based routing gate
A site map for Survivable Branch Appliance. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Notification and the test call. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Certified phones. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Serial distribution for Teams Rooms. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Media bypass. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Local media optimization still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Common area phones, again, as devices.
Location-based routing gate
A site map for What certification buys you. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for AudioCodes pattern. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Ribbon pattern. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Longest idle distribution for Oracle Communications SBC. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for The support boundary. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. The certificate profile still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Names, wildcards, and the paired FQDN.
Location-based routing gate
A site map for Three SIP proxies and failover. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for SIP OPTIONS. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Codecs and SRTP. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Longest idle distribution for Failover you can rehearse. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Reading a ladder. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Call Analytics still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Call Quality Dashboard.
Location-based routing gate
A site map for Trunk health. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for A fault catalog. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Customer Service and Contact Center. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Longest idle distribution for Channels. Overflow is a configured target.
Dynamics unified routing
Language, intent, and capacity for Unified routing. Overflow is a rule.
Media bypass beside the signaling path
Two paths for Representative experience and Copilot. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Voice on ACS still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: The AB-250 map.
Location-based routing gate
A site map for Connect, Extend, and Unify. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Teams Phone extensibility. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for CUCM and CUBE. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Longest idle distribution for Webex calling interop. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Genesys and Amazon Connect. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Calling SDK versus Call Automation still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Teams interop from ACS.
Location-based routing gate
A site map for An IVR as events. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Azure AI Speech. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Copilot Studio voice. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Round robin distribution for Foundry, and what not to invent. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for MB-280, AB-210, and AB-250. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. AZ-900 and SC-900 still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Learning paths that match the job.
Location-based routing gate
A site map for The status board. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for How to use the readiness map. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Voice is not a closed box. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Serial distribution for How to use the glossary. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Compliance recording and quality management. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Workforce management still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: E911 as a system of record.
Location-based routing gate
A site map for Analytics and Power BI. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for CRM and screen pop. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for AI agents beside the queue. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Attendant distribution for Integration maps. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Future-integration hooks. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Configuring an ecosystem change still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Troubleshooting across a vendor boundary.
Location-based routing gate
A site map for What CTI names. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for The Dynamics voice channel. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Teams Phone into the voice channel. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Serial distribution for The resource account and the number. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Amazon Connect and partner telephony. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. The call-to-record seam still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: A comparison with no winner.
Location-based routing gate
A site map for What the Microsoft pages name. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Amazon Connect Customer. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for CCAI Platform and the GECX rename. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Round robin distribution for Documented differences only. Overflow is a configured target.
OPTIONS health
Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.
Media bypass beside the signaling path
Two paths for Classification, then assignment. RTP may skip the processor. SIP does not.
ACS call automation
Events, not a phone tree hidden in a form. Voice workstreams and voice queues still needs a human escape.
Survivable branch timeline
What remains when the path to Microsoft 365 drops. Lesson: Highest capacity, round robin, least active.
Location-based routing gate
A site map for Forecast, capacity, and schedule. LBR is toll-bypass control, not emergency location by itself.
Dynamics unified routing
Language, intent, and capacity for Indicators and guardrails. Overflow is a rule.
SIP over TLS toward the carrier
Signaling for Two recording controls. Teams keeps the dialog. A 488 is codecs, not a greeting.
Call queue routing
Longest idle distribution for Which control failed. Overflow is a configured target.
