Voice LabTeams Phone

Flows

Animated flows keep their motion in the SVG. 130 files. Reduced motion still shows every hop.

SIP over TLS toward the carrier

SIP over TLS toward the carrierTeamsProxySBC-AINVITE100INVITE180200ACK

Signaling for The tenant boundary. Teams keeps the dialog. A 488 is codecs, not a greeting.

The tenant boundary

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Call queue routing

Call queue routingCall queueSerialAgent 1Agent 2Agent 3Agent 4Agent 5Timeout to overflow

Serial distribution for Entra ID accounts voice will use. Overflow is a configured target.

Entra ID accounts voice will use

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

Roles that can change voice

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for The admin-center map. RTP may skip the processor. SIP does not.

The admin-center map

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. Exchange and Cloud Voicemail still needs a human escape.

Exchange and Cloud Voicemail

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: What homed online means.

What homed online means

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteLocal SBC allowedSite 3 subnetTrusted IP and siteToll bypass blocked

A site map for The license stack. LBR is toll-bypass control, not emergency location by itself.

The license stack

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationOutagecap 2Billingcap 1Generalcap 0

Language, intent, and capacity for Calling Plan flavors. Overflow is a rule.

Calling Plan flavors

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SIP over TLS toward the carrier

SIP over TLS toward the carrierTeamsProxySBC-ASBC-BINVITEINVITEINVITE100183200ACK

Signaling for Teams Premium is not PSTN. Teams keeps the dialog. A 488 is codecs, not a greeting.

Teams Premium is not PSTN

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Call queue routing

Call queue routingCall queueRound robinAgent 1Agent 2Agent 3Agent 4Timeout to overflow

Round robin distribution for Resource account licenses. Overflow is a configured target.

Resource account licenses

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCVPN or bypass off. Media hairpins through the processor.Signaling does not bypass

Two paths for A license set you can defend. RTP may skip the processor. SIP does not.

A license set you can defend

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ACS call automation

ACS call automationAnswerPlaySpeechEscalateHumanBye

Events, not a phone tree hidden in a form. The module and the session still needs a human escape.

The module and the session

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Objects you will actually get.

Objects you will actually get

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteLocal SBC allowed

A site map for Grant, set, and new. LBR is toll-bypass control, not emergency location by itself.

Grant, set, and new

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationFrench billingcap 1English billingcap 0Overflowcap 2

Language, intent, and capacity for Reading a user before you change one. Overflow is a rule.

Reading a user before you change one

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SIP over TLS toward the carrier

SIP over TLS toward the carrierPhoneTeamsSBCINVITEINVITE180200ACK

Signaling for When the portal and the shell disagree. Teams keeps the dialog. A 488 is codecs, not a greeting.

When the portal and the shell disagree

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Call queue routing

Call queue routingCall queueAttendantAgent 1Agent 2Agent 3Agent 4Agent 5Timeout to overflow

Attendant distribution for Safety on a lab tenant. Overflow is a configured target.

Safety on a lab tenant

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for The port and DSCP table. RTP may skip the processor. SIP does not.

The port and DSCP table

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. VPN and the split tunnel still needs a human escape.

VPN and the split tunnel

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN down. Local PSTN only.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Bandwidth you can calculate.

Bandwidth you can calculate

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteLocal SBC allowed

A site map for Proving the mark survived. LBR is toll-bypass control, not emergency location by itself.

Proving the mark survived

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationVoicecap 2Chatcap 1Emailcap 0

Language, intent, and capacity for ExpressRoute is not the requirement. Overflow is a rule.

ExpressRoute is not the requirement

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SIP over TLS toward the carrier

SIP over TLS toward the carrierClientsipsip2INVITE100INVITE180200ACK

Signaling for Four ways to reach the PSTN. Teams keeps the dialog. A 488 is codecs, not a greeting.

Four ways to reach the PSTN

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Call queue routing

Call queue routingCall queueSerialAgent 1Agent 2Agent 3Agent 4Agent 5Timeout to overflow

Serial distribution for Calling Plans in practice. Overflow is a configured target.

Calling Plans in practice

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

Operator Connect

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for Teams Phone Mobile. RTP may skip the processor. SIP does not.

Teams Phone Mobile

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SIP over TLS toward the carrier

SIP over TLS toward the carrierPhoneTeamsSBCINVITEINVITE180200ACK

Signaling for Direct Routing. Teams keeps the dialog. A 488 is codecs, not a greeting.

Direct Routing

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN down. Local PSTN only.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Mixing them in one tenant.

Mixing them in one tenant

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteLocal SBC allowedSite 3 subnetTrusted IP and siteLocal SBC allowed

A site map for Normalize, then route. LBR is toll-bypass control, not emergency location by itself.

Normalize, then route

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationVoicecap 2Chatcap 1Emailcap 0

Language, intent, and capacity for Dial plans and first match. Overflow is a rule.

Dial plans and first match

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SIP over TLS toward the carrier

SIP over TLS toward the carrierTeamsSIP proxySBCCarrierINVITEINVITEINVITE100183200ACK

Signaling for PSTN usages are the permission. Teams keeps the dialog. A 488 is codecs, not a greeting.

PSTN usages are the permission

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Call queue routing

Call queue routingCall queueRound robinAgent 1Agent 2Agent 3Timeout to overflow

Round robin distribution for Voice routes and gateways. Overflow is a configured target.

Voice routes and gateways

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

A London worked example

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCVPN or bypass off. Media hairpins through the processor.Signaling does not bypass

Two paths for Islands mode and other hard stops. RTP may skip the processor. SIP does not.

Islands mode and other hard stops

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ACS call automation

ACS call automationAnswerPlaySpeechEscalateHumanBye

Events, not a phone tree hidden in a form. Resource accounts for voice apps still needs a human escape.

Resource accounts for voice apps

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN down. Local PSTN only.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Auto attendant design.

Auto attendant design

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Call queue routing

Call queue routingCall queueSerialAgent 1Agent 2Agent 3Timeout to overflow

Serial distribution for Queue routing methods. Overflow is a configured target.

Queue routing methods

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationOutagecap 2Billingcap 1Generalcap 0

Language, intent, and capacity for Timeout, overflow, and outbound funding. Overflow is a rule.

Timeout, overflow, and outbound funding

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SIP over TLS toward the carrier

SIP over TLS toward the carrierTeamsSIP proxySBCINVITEINVITE180200ACK

Signaling for Nested voice apps. Teams keeps the dialog. A 488 is codecs, not a greeting.

Nested voice apps

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Call queue routing

Call queue routingCall queueLongest idleAgent 1Agent 2Agent 3Agent 4Timeout to overflow

Longest idle distribution for Numbers on voice apps. Overflow is a configured target.

Numbers on voice apps

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for Dynamic location. RTP may skip the processor. SIP does not.

Dynamic location

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteToll bypass blockedSite 3 subnetTrusted IP and siteLocal SBC allowed

A site map for Location-based routing. LBR is toll-bypass control, not emergency location by itself.

Location-based routing

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteToll bypass blocked

A site map for Survivable Branch Appliance. LBR is toll-bypass control, not emergency location by itself.

Survivable Branch Appliance

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationFrench billingcap 1English billingcap 0Overflowcap 2

Language, intent, and capacity for Notification and the test call. Overflow is a rule.

Notification and the test call

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SIP over TLS toward the carrier

SIP over TLS toward the carrierClientsipsip2INVITEINVITE180200ACK

Signaling for Certified phones. Teams keeps the dialog. A 488 is codecs, not a greeting.

Certified phones

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Call queue routing

Call queue routingCall queueSerialAgent 1Agent 2Agent 3Timeout to overflow

Serial distribution for Teams Rooms. Overflow is a configured target.

Teams Rooms

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

SIP Gateway and analog

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for Media bypass. RTP may skip the processor. SIP does not.

Media bypass

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ACS call automation

ACS call automationAnswerPlaySpeechEscalateHumanBye

Events, not a phone tree hidden in a form. Local media optimization still needs a human escape.

Local media optimization

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Common area phones, again, as devices.

Common area phones, again, as devices

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteToll bypass blockedSite 2 subnetTrusted IP and siteLocal SBC allowed

A site map for What certification buys you. LBR is toll-bypass control, not emergency location by itself.

What certification buys you

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationOutagecap 2Billingcap 1Generalcap 0

Language, intent, and capacity for AudioCodes pattern. Overflow is a rule.

AudioCodes pattern

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SIP over TLS toward the carrier

SIP over TLS toward the carrierUsersip3SBCINVITEINVITE180200ACK

Signaling for Ribbon pattern. Teams keeps the dialog. A 488 is codecs, not a greeting.

Ribbon pattern

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Call queue routing

Call queue routingCall queueLongest idleAgent 1Agent 2Agent 3Agent 4Timeout to overflow

Longest idle distribution for Oracle Communications SBC. Overflow is a configured target.

Oracle Communications SBC

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

Cisco CUBE for Teams

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for The support boundary. RTP may skip the processor. SIP does not.

The support boundary

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. The certificate profile still needs a human escape.

The certificate profile

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Names, wildcards, and the paired FQDN.

Names, wildcards, and the paired FQDN

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteToll bypass blockedSite 2 subnetTrusted IP and siteToll bypass blocked

A site map for Three SIP proxies and failover. LBR is toll-bypass control, not emergency location by itself.

Three SIP proxies and failover

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationFrench billingcap 1English billingcap 0Overflowcap 2

Language, intent, and capacity for SIP OPTIONS. Overflow is a rule.

SIP OPTIONS

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SIP over TLS toward the carrier

SIP over TLS toward the carrierTeamsProxySBC-AINVITE100INVITE180200ACK

Signaling for Codecs and SRTP. Teams keeps the dialog. A 488 is codecs, not a greeting.

Codecs and SRTP

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Call queue routing

Call queue routingCall queueLongest idleAgent 1Agent 2Agent 3Agent 4Agent 5Timeout to overflow

Longest idle distribution for Failover you can rehearse. Overflow is a configured target.

Failover you can rehearse

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

One hypothesis

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for Reading a ladder. RTP may skip the processor. SIP does not.

Reading a ladder

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ACS call automation

ACS call automationAnswerPlaySpeechEscalateHumanBye

Events, not a phone tree hidden in a form. Call Analytics still needs a human escape.

Call Analytics

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Call Quality Dashboard.

Call Quality Dashboard

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteLocal SBC allowed

A site map for Trunk health. LBR is toll-bypass control, not emergency location by itself.

Trunk health

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationVoicecap 2Chatcap 1Emailcap 0

Language, intent, and capacity for A fault catalog. Overflow is a rule.

A fault catalog

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SIP over TLS toward the carrier

SIP over TLS toward the carrierTeamsSIP proxySBCINVITE100INVITE180200ACK

Signaling for Customer Service and Contact Center. Teams keeps the dialog. A 488 is codecs, not a greeting.

Customer Service and Contact Center

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Call queue routing

Call queue routingCall queueLongest idleAgent 1Agent 2Agent 3Agent 4Agent 5Timeout to overflow

Longest idle distribution for Channels. Overflow is a configured target.

Channels

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationFrench billingcap 1English billingcap 0Overflowcap 2

Language, intent, and capacity for Unified routing. Overflow is a rule.

Unified routing

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCVPN or bypass off. Media hairpins through the processor.Signaling does not bypass

Two paths for Representative experience and Copilot. RTP may skip the processor. SIP does not.

Representative experience and Copilot

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. Voice on ACS still needs a human escape.

Voice on ACS

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN down. Local PSTN only.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: The AB-250 map.

The AB-250 map

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteToll bypass blockedSite 2 subnetTrusted IP and siteLocal SBC allowed

A site map for Connect, Extend, and Unify. LBR is toll-bypass control, not emergency location by itself.

Connect, Extend, and Unify

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationOutagecap 2Billingcap 1Generalcap 0

Language, intent, and capacity for Teams Phone extensibility. Overflow is a rule.

Teams Phone extensibility

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SIP over TLS toward the carrier

SIP over TLS toward the carrierUsersip3SBCINVITEINVITE180200ACK

Signaling for CUCM and CUBE. Teams keeps the dialog. A 488 is codecs, not a greeting.

CUCM and CUBE

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Call queue routing

Call queue routingCall queueLongest idleAgent 1Agent 2Agent 3Timeout to overflow

Longest idle distribution for Webex calling interop. Overflow is a configured target.

Webex calling interop

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

UCCE during a move

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for Genesys and Amazon Connect. RTP may skip the processor. SIP does not.

Genesys and Amazon Connect

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. Calling SDK versus Call Automation still needs a human escape.

Calling SDK versus Call Automation

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Teams interop from ACS.

Teams interop from ACS

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteLocal SBC allowedSite 3 subnetTrusted IP and siteLocal SBC allowed

A site map for An IVR as events. LBR is toll-bypass control, not emergency location by itself.

An IVR as events

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationOutagecap 2Billingcap 1Generalcap 0

Language, intent, and capacity for Azure AI Speech. Overflow is a rule.

Azure AI Speech

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SIP over TLS toward the carrier

SIP over TLS toward the carrierUsersip3SBCINVITE100INVITE180200ACK

Signaling for Copilot Studio voice. Teams keeps the dialog. A 488 is codecs, not a greeting.

Copilot Studio voice

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Call queue routing

Call queue routingCall queueRound robinAgent 1Agent 2Agent 3Timeout to overflow

Round robin distribution for Foundry, and what not to invent. Overflow is a configured target.

Foundry, and what not to invent

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

MS-700 on 14 October 2026

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for MB-280, AB-210, and AB-250. RTP may skip the processor. SIP does not.

MB-280, AB-210, and AB-250

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. AZ-900 and SC-900 still needs a human escape.

AZ-900 and SC-900

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN down. Local PSTN only.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Learning paths that match the job.

Learning paths that match the job

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteToll bypass blocked

A site map for The status board. LBR is toll-bypass control, not emergency location by itself.

The status board

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationFrench billingcap 1English billingcap 0Overflowcap 2

Language, intent, and capacity for How to use the readiness map. Overflow is a rule.

How to use the readiness map

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SIP over TLS toward the carrier

SIP over TLS toward the carrierClientsipsip2SBCINVITEINVITEINVITE100183200ACK

Signaling for Voice is not a closed box. Teams keeps the dialog. A 488 is codecs, not a greeting.

Voice is not a closed box

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Call queue routing

Call queue routingCall queueSerialAgent 1Agent 2Agent 3Agent 4Timeout to overflow

Serial distribution for How to use the glossary. Overflow is a configured target.

How to use the glossary

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

The mind map

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCVPN or bypass off. Media hairpins through the processor.Signaling does not bypass

Two paths for Compliance recording and quality management. RTP may skip the processor. SIP does not.

Compliance recording and quality management

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. Workforce management still needs a human escape.

Workforce management

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: E911 as a system of record.

E911 as a system of record

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteToll bypass blockedSite 2 subnetTrusted IP and siteToll bypass blocked

A site map for Analytics and Power BI. LBR is toll-bypass control, not emergency location by itself.

Analytics and Power BI

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationVoicecap 2Chatcap 1Emailcap 0

Language, intent, and capacity for CRM and screen pop. Overflow is a rule.

CRM and screen pop

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SIP over TLS toward the carrier

SIP over TLS toward the carrierClientsipsip2INVITEINVITE180200ACK

Signaling for AI agents beside the queue. Teams keeps the dialog. A 488 is codecs, not a greeting.

AI agents beside the queue

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Call queue routing

Call queue routingCall queueAttendantAgent 1Agent 2Agent 3Agent 4Timeout to overflow

Attendant distribution for Integration maps. Overflow is a configured target.

Integration maps

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OPTIONS health

OPTIONS health12345678SIP OPTIONS

Repeated misses take a trunk out of service. The campus does not invent Microsoft's internal counter.

Cross-platform bridges

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCVPN or bypass off. Media hairpins through the processor.Signaling does not bypass

Two paths for Future-integration hooks. RTP may skip the processor. SIP does not.

Future-integration hooks

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. Configuring an ecosystem change still needs a human escape.

Configuring an ecosystem change

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN down. Local PSTN only.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Troubleshooting across a vendor boundary.

Troubleshooting across a vendor boundary

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteToll bypass blockedSite 3 subnetTrusted IP and siteLocal SBC allowedSite 4 subnetTrusted IP and siteLocal SBC allowed

A site map for What CTI names. LBR is toll-bypass control, not emergency location by itself.

What CTI names

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationVoicecap 2Chatcap 1Emailcap 0

Language, intent, and capacity for The Dynamics voice channel. Overflow is a rule.

The Dynamics voice channel

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SIP over TLS toward the carrier

SIP over TLS toward the carrierPhoneTeamsSBCPSTNINVITEINVITEINVITE100183200ACK

Signaling for Teams Phone into the voice channel. Teams keeps the dialog. A 488 is codecs, not a greeting.

Teams Phone into the voice channel

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Call queue routing

Call queue routingCall queueSerialAgent 1Agent 2Agent 3Timeout to overflow

Serial distribution for The resource account and the number. Overflow is a configured target.

The resource account and the number

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for Amazon Connect and partner telephony. RTP may skip the processor. SIP does not.

Amazon Connect and partner telephony

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ACS call automation

ACS call automationAnswerPlaySpeechEscalateHumanBye

Events, not a phone tree hidden in a form. The call-to-record seam still needs a human escape.

The call-to-record seam

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: A comparison with no winner.

A comparison with no winner

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteLocal SBC allowed

A site map for What the Microsoft pages name. LBR is toll-bypass control, not emergency location by itself.

What the Microsoft pages name

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationFrench billingcap 1English billingcap 0Overflowcap 2

Language, intent, and capacity for Amazon Connect Customer. Overflow is a rule.

Amazon Connect Customer

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SIP over TLS toward the carrier

SIP over TLS toward the carrierUsersip3SBCCarrierINVITEINVITEINVITE100183200ACK

Signaling for CCAI Platform and the GECX rename. Teams keeps the dialog. A 488 is codecs, not a greeting.

CCAI Platform and the GECX rename

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Call queue routing

Call queue routingCall queueRound robinAgent 1Agent 2Agent 3Timeout to overflow

Round robin distribution for Documented differences only. Overflow is a configured target.

Documented differences only

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Media bypass beside the signaling path

Media bypass beside the signaling pathTeams clientMedia processorCertified SBCMedia bypass candidate, same site. Signaling still visits Teams.Signaling does not bypass

Two paths for Classification, then assignment. RTP may skip the processor. SIP does not.

Classification, then assignment

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ACS call automation

ACS call automationAnswerPlayRecognizeDTMFTransferHang up

Events, not a phone tree hidden in a form. Voice workstreams and voice queues still needs a human escape.

Voice workstreams and voice queues

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Survivable branch timeline

Survivable branch timelineBranch clientsSBA and SBCMicrosoft 365WAN up. Cloud is the path.Meetings and presence are not the survivable set.

What remains when the path to Microsoft 365 drops. Lesson: Highest capacity, round robin, least active.

Highest capacity, round robin, least active

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Location-based routing gate

Location-based routing gateLocation-based routingSite 1 subnetTrusted IP and siteLocal SBC allowedSite 2 subnetTrusted IP and siteToll bypass blockedSite 3 subnetTrusted IP and siteLocal SBC allowedSite 4 subnetTrusted IP and siteLocal SBC allowed

A site map for Forecast, capacity, and schedule. LBR is toll-bypass control, not emergency location by itself.

Forecast, capacity, and schedule

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Dynamics unified routing

Dynamics unified routingWorkstreamClassificationOutagecap 2Billingcap 1Generalcap 0

Language, intent, and capacity for Indicators and guardrails. Overflow is a rule.

Indicators and guardrails

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SIP over TLS toward the carrier

SIP over TLS toward the carrierTeamsSIP proxySBCINVITEINVITE180200ACK

Signaling for Two recording controls. Teams keeps the dialog. A 488 is codecs, not a greeting.

Two recording controls

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Call queue routing

Call queue routingCall queueLongest idleAgent 1Agent 2Agent 3Timeout to overflow

Longest idle distribution for Which control failed. Overflow is a configured target.

Which control failed

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Sources and go deeper

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