01
POTS shutdown
Analog emergency devices may lose service when copper lines are retired.
Emergency Calling Infrastructure
Protect emergency communications before legacy voice becomes a risk.
Modernize emergency phones, elevator phones, analog devices, SIP routing and Microsoft Teams Phone while maintaining reliable emergency communications across buildings, campuses and distributed sites.
Microsoft Teams Emergency Calling
SIP Emergency Routing
POTS Replacement
Critical Communications
Emergency endpoint continuityPreserve compatible phones, elevators, alarms and intercoms.
Controlled SIP routingDefine secure, resilient emergency call paths.
Teams migration supportInclude emergency calling in Direct Routing architecture.
Multi-site readinessStandardize emergency voice across buildings and locations.
Emergency calling architectureEndpoint → secure control → emergency service
Emergency endpoints
Elevator phonesEmergency phonesMicrosoft TeamsAlarmsPBX users
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M5 voice infrastructure
Mediatrix gatewaySentinel SBCSIP routingFailoverPolicy control
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Emergency communications network
9-1-1 serviceSIP carrierPSTNNG9-1-1Public safety network
IdentifyMap every critical endpoint.
RouteValidate the emergency path.
ProtectSecure the SIP border.
30+ Years of SIP ExpertiseTelecom engineering across enterprise and critical voice environments.
Mediatrix GatewaysAnalog and legacy endpoint modernization for emergency use cases.
Sentinel SBCSecure SIP routing, border control and Direct Routing architecture.
Made in CanadaCanadian-designed communications technology for global deployments.
Is your emergency calling at risk?
Most emergency voice failures begin with an incomplete migration plan.
Organizations often modernize PBXs, cloud voice and POTS services without fully mapping critical endpoints, emergency routing, location data or failover.
02
Microsoft Teams migration
Emergency calling and location workflows may be overlooked during Direct Routing deployment.
03
Legacy PBX dependence
Emergency endpoints may still depend on aging PBX, PRI or analog infrastructure.
04
Multi-site inconsistency
Different buildings may use different carriers, gateways and emergency procedures.
What M5 helps you solve
Emergency voice modernization across analog, SIP, cloud and Microsoft Teams.
01
Elevator Phones
Modernize compatible analog elevator phones while validating power, signaling and emergency routing.
02
Emergency Phones
Preserve emergency phones across campuses, parking areas, roads, rail, ports and public facilities.
03
Alarm & Intercom Devices
Connect compatible analog panels and intercoms to modern IP voice infrastructure.
04
Microsoft Teams Emergency Calling
Include emergency routing, location and SBC connectivity in Teams Phone architecture.
05
SIP Emergency Routing
Control call paths, normalization, carrier interconnection and failover.
06
POTS Replacement
Reduce copper dependency without disconnecting compatible life-safety and critical endpoints.
Legacy vs modern emergency calling
Legacy 9-1-1 infrastructure vs SIP-based emergency voice.
| Criteria | Legacy Emergency Voice | Modern SIP Emergency Calling |
|---|---|---|
| Network foundation | POTS, PRI, PBX and fixed circuits | SIP, IP, SBC, cloud voice and managed routing |
| Endpoint support | Native analog and legacy device connectivity | Requires validated gateway and endpoint architecture |
| Scalability | Site-specific and difficult to standardize | Better suited to centralized and multi-site management |
| Security and routing | Limited policy control | SBC-based routing, normalization and border control |
| Best approach | Maintain until migration is validated | Modernize in phases with tested emergency paths and fallback |
Gateway vs SBC
Gateways preserve endpoints. SBCs protect and control the SIP border.
| Component | Primary role | Emergency calling value |
|---|---|---|
| Mediatrix Gateway | Connects analog, PRI, BRI or PBX interfaces to SIP | Preserves compatible emergency phones, elevators and legacy devices |
| Sentinel SBC | Controls SIP signaling, routing, topology and security | Supports controlled emergency call paths and Teams Direct Routing architecture |
| Emergency Service / Carrier | Receives and processes the emergency call | Provides access to emergency communications networks |
| Combined architecture | Coordinates endpoint, gateway, SBC, carrier and service | Best for resilient emergency voice modernization |
Microsoft Teams Emergency Calling
Teams migration must include emergency calling from the beginning.
For Direct Routing, use a supported certified SBC model. Certification applies to the specific SBC and software version, not to 9-1-1 services, Mediatrix gateways or Audiotrix products.
01
Direct Routing Connectivity
Use a supported certified Sentinel SBC model where applicable to the planned Teams architecture.
02
Location & Policy
Define site, user, location, carrier and emergency-routing policies before deployment.
03
Legacy Endpoint Integration
Use Mediatrix gateways when compatible analog or PBX endpoints must remain in service.
Reference architecture
From emergency endpoint to emergency service.
Emergency EndpointElevator phone, emergency phone, Teams user, PBX phone or analog device
→
Mediatrix GatewayAnalog and legacy interworking when required
→
Sentinel SBCSIP routing, security, normalization and Direct Routing connectivity
→
Emergency ServiceSIP carrier, PSTN, 9-1-1 or NG9-1-1 network
Who needs this
Emergency calling modernization for high-responsibility environments.
HospitalsEmergency phones, elevators, nurse-call-adjacent voice and campus communications.
HotelsGuest rooms, elevators, front desk, emergency phones and large analog estates.
Schools & UniversitiesCampus emergency phones, intercoms and multi-building voice continuity.
GovernmentPublic buildings, emergency operations and regulated communications.
Airports & TransportationTerminal phones, elevators, operations centers and distributed emergency endpoints.
UtilitiesRemote sites, substations, critical facilities and resilient emergency voice.
ManufacturingPlant phones, alarms, intercoms and operational communications.
Commercial BuildingsElevators, parking areas, security desks and life-safety communication points.
Why M5 Technologies
One portfolio for emergency endpoints, SIP security and voice modernization.
01
30+ Years of SIP Expertise
Long-standing telecom engineering experience across enterprise and operator networks.
02
Mediatrix Gateway Portfolio
Analog, PRI, BRI, PBX and POTS replacement options for legacy endpoint continuity.
03
Sentinel SBC Architecture
Secure SIP borders, routing, normalization and Teams Direct Routing connectivity.
04
Critical Infrastructure Experience
Voice modernization for environments where continuity and safety matter.
Emergency Calling FAQ
Questions buyers ask before starting an emergency voice project.
What is emergency calling in VoIP?
Emergency calling in VoIP enables users and devices to reach emergency services through SIP, cloud voice, Microsoft Teams, gateways or IP-based phone systems.
Can POTS replacement affect emergency calling?
Yes. Copper-line retirement can affect power, signaling, location, failover and endpoint behavior. These requirements should be validated before migration.
Can elevator phones use SIP?
Compatible elevator phones can be connected through a suitable gateway, subject to signaling, power, monitoring and regulatory validation.
Why use a gateway?
A gateway connects compatible analog, PRI, BRI or PBX systems to SIP infrastructure.
Why use an SBC?
An SBC protects and controls SIP signaling, routing, normalization and external interconnection.
Does Microsoft Teams support emergency calling?
Yes. Teams Phone supports emergency calling capabilities, but the final architecture, policies, locations, carrier services and regional requirements must be configured correctly.
Are Audiotrix products Microsoft Teams Direct Routing certified?
No. Audiotrix products are not Microsoft Teams Direct Routing certified.
Can M5 assess multiple buildings?
Yes. M5 can help review multi-site emergency endpoints, gateways, carriers, SBCs and modernization priorities.
Which products are typically used?
Projects may use Sentinel SBCs, Mediatrix 4102S, C7 or G7 gateways, depending on the interfaces, scale and target voice platform.
What information is needed for an assessment?
Start with the number of sites, emergency phones, elevator phones, current PBX or Teams environment, POTS lines, carriers and project timeline.
Emergency Communications Assessment
Find the risk before it becomes an emergency calling failure.
Share a high-level overview of the current environment. M5 can help identify where gateways, SBCs, routing, endpoint testing or migration planning may be required.
- Number of buildings and emergency endpoints
- Elevator phones, alarms and analog devices
- Microsoft Teams, PBX, SIP or cloud voice environment
- POTS retirement and carrier migration
- Failover, continuity and project timeline