01
Protect SIP trunks
Secure SIP connectivity between PBX, Microsoft Teams, UC platforms, contact centers, SIP providers and telecom networks.
M5 TECHNOLOGIES • MEDIATRIX SBC SENTINEL 400
Mediatrix Session Border Controller
Sentinel 400
The Mediatrix SBC Sentinel 400 by M5 Technologies is a carrier-grade Session Border Controller engineered to secure SIP trunks, Microsoft Teams Direct Routing, contact centers, telecom carriers, NG911 infrastructure and mission-critical communications. Sentinel 400 delivers advanced SIP security, fraud detection, interoperability and support for 62,000+ concurrent calls.
24/7 Worldwide Technical Support
Phone: +1 (819) 829-8749
62,000+ CallsHigh-capacity concurrent call architecture.
Fraud DetectionReduce exposure to toll fraud and abnormal traffic.
Carrier GradeBuilt for enterprises, operators and service providers.
NG911 ReadyDesigned for critical emergency voice paths.
Mediatrix SBC
Sentinel 400
Sentinel 400
SIP SECURITY • FRAUD CONTROL • CARRIER EDGE
62,000+Concurrent calls
24/7Worldwide support
TLS/SRTPSecure SIP media
SIP Edge SecurityProtect the boundary between trusted and untrusted voice networks.
Fraud PreventionControl abnormal traffic patterns, toll fraud exposure and unauthorized SIP access.
Call CentersSecure inbound, outbound, IVR, agent and customer voice traffic.
Telecom CarriersDeploy carrier-grade SIP control for operators and service providers.
62,000+ CallsBuilt for high-capacity enterprise and operator voice deployments.
Why Sentinel 400
A Session Border Controller is the security control point for modern voice networks.
Sentinel 400 sits between your internal voice systems and the outside SIP world. It controls who can connect, how calls are routed, how SIP traffic is normalized and how voice infrastructure is protected from fraud, attacks and interoperability problems.
02
Detect and reduce fraud
Help identify abnormal calling behavior, suspicious registrations, unauthorized routing attempts and toll fraud exposure.
03
Normalize SIP traffic
Improve interoperability between different PBX, UCaaS, SIP trunk, carrier and contact center platforms.
Markets served
Designed for enterprises, contact centers, service providers and critical infrastructure.
Sentinel 400 is positioned for organizations where voice is operationally critical and SIP security cannot be treated as a basic firewall rule.
Call CentersInbound queues, outbound campaigns, IVR, agent platforms and customer voice traffic.
Contact CentersHigh-value customer communications requiring availability, security and visibility.
Telecom CarriersCarrier-grade SIP edge control for operators, SIP trunk providers and UCaaS providers.
Large EnterprisesSecure voice connectivity across headquarters, branches and hybrid UC environments.
Microsoft Teams VoiceSBC architecture for Teams Direct Routing and enterprise SIP interconnection.
NG911 and Emergency VoiceControlled emergency call paths for critical communications environments.
Government and DefenseSecure SIP infrastructure for sensitive and mission-critical communications.
Utilities, Airports and HospitalsVoice continuity for infrastructure where outages and fraud can create major risk.
Maximum security
Built to protect voice networks against SIP attacks, fraud and unauthorized access.
Sentinel 400 adds a dedicated security layer for SIP signaling and media, helping protect PBX systems, contact centers, carrier networks and critical voice platforms.
SIP Flood ProtectionHelps control excessive SIP traffic and abnormal request patterns.
DoS / DDoS Exposure ControlReduces direct exposure of voice platforms to hostile network traffic.
Toll Fraud PreventionControls unauthorized routes, premium number abuse and abnormal outbound calling.
Topology HidingProtects internal network details from external SIP peers.
TLS and SRTPSupports encrypted SIP signaling and secure media paths.
Registration ProtectionHelps limit rogue registrations, credential abuse and unauthorized endpoints.
Policy EnforcementControls call routing, admission, access and traffic behavior.
SIP NormalizationSanitizes and adapts signaling between different SIP systems.
Media ProtectionControls RTP/SRTP behavior and helps protect real-time voice sessions.
Call Admission ControlProtects infrastructure by controlling session load and call limits.
Suspicious Traffic ControlSupports mitigation of SIP scanners, bots and malformed traffic.
Critical Voice ContinuitySupports resilient SIP edge design for high-availability voice networks.
Fraud detection
Stop telecom fraud before it becomes a financial loss.
Telecom fraud can create major costs in a very short time. Sentinel 400 helps reduce risk by placing policy, routing, access control and behavioral visibility at the SIP edge.
Fraud risks Sentinel 400 helps address
For enterprise, operator and call center environments.
International toll fraud and unauthorized long-distance traffic
Premium-rate number abuse and abnormal call destinations
Credential theft, rogue registration and registration abuse
Massive outbound calling patterns and call pumping attempts
SIP scanners, bots, malformed messages and unauthorized SIP access
Security controls at the SIP edge
For controlled, auditable and supportable voice connectivity.
Access control between enterprise voice systems and external SIP networks
Routing policy enforcement for approved destinations and call patterns
Session control for call volume, concurrency and network protection
SIP normalization to reduce interoperability and protocol abuse risks
Demarcation point for troubleshooting, monitoring and service ownership
How it works
Sentinel 400 becomes the controlled security layer between your voice network and the outside world.
Internal Network
PBX, Microsoft Teams, UC, Contact Center or IP Phones
Business voice systems generate and receive SIP calls.
M5 Technologies
Mediatrix SBC Sentinel 400
SIP security, fraud control, routing policy, normalization, encryption, topology hiding and high-capacity session control.
External Network
SIP Trunk, Telecom Carrier, UCaaS or Emergency Network
External voice services receive controlled, secured and normalized SIP traffic.
Mediatrix SBC Sentinel 400 Architecture
Secure SIP Edge • 62,000+ Concurrent Calls • 24/7 Worldwide Support
Enterprise performance
Carrier-class capacity for high-volume voice deployments.
Sentinel 400 is positioned for large-scale SIP environments that require security, resilience, interoperability and predictable voice performance.
62K+
62,000+ concurrent calls
Supports high-capacity enterprise, contact center, service provider and carrier deployments.
HA
High availability design
Supports resilient voice architecture for business continuity and critical communications.
24/7
Worldwide technical support
M5 Technologies supports global enterprise, operator and critical voice deployments.
Deployment fit
Where Sentinel 400 fits in the voice infrastructure strategy.
Use Sentinel 400 when SIP traffic must be secured, normalized, controlled and scaled across business-critical communications.
| Deployment | Typical Environment | What Sentinel 400 Adds | Business Value |
|---|---|---|---|
| Call Center / Contact Center | IVR, inbound queues, outbound campaigns, agent platforms and customer service operations. | SIP trunk protection, fraud control, traffic policy, normalization and availability. | Protects revenue-impacting customer communications. |
| Telecom Carrier / SIP Provider | Operators, UCaaS providers, SIP trunk providers and managed voice networks. | Carrier-grade SIP edge control, topology hiding, interoperability and scalable session management. | Creates a secure and repeatable voice service architecture. |
| Enterprise SIP Trunking | PBX, Microsoft Teams, UC, hosted voice and hybrid enterprise environments. | Security demarcation, SIP normalization, encrypted signaling and routing control. | Reduces risk during SIP migration and modernization. |
| NG911 / Critical Communications | Government, public safety, utilities, hospitals, airports and critical infrastructure. | Controlled emergency voice routing, SIP edge security and critical call path protection. | Improves reliability for mission-critical voice services. |
FAQ
Frequently asked questions about Mediatrix SBC Sentinel 400.
What is Sentinel 400 used for?
Sentinel 400 is used to secure SIP trunks, control voice traffic, protect against fraud, normalize SIP signaling and connect enterprise or carrier networks to external SIP services.
Is Sentinel 400 suitable for call centers?
Yes. It is designed for call centers and contact centers that require high-capacity SIP trunking, fraud control, security, interoperability and business continuity.
Can Sentinel 400 support telecom carriers?
Yes. Sentinel 400 is positioned for telecom carriers, service providers, SIP trunk providers, UCaaS providers and managed service operators.
Does Sentinel 400 prevent toll fraud?
Sentinel 400 helps reduce toll fraud exposure through access control, call policy, routing restrictions, abnormal traffic visibility and SIP edge protection.
How many concurrent calls can it support?
Sentinel 400 is positioned for high-capacity deployments supporting 62,000+ concurrent calls depending on architecture, configuration and deployment model.
Does an SBC replace a firewall?
No. A firewall protects the general network. An SBC specifically protects SIP signaling, media sessions, voice routing, policy and interoperability at the voice edge.
Talk to M5 Technologies
Secure your SIP edge with Sentinel 400.
Share your SIP trunk, PBX, Microsoft Teams, call center, carrier, NG911 or critical communications requirements. M5 Technologies can help evaluate the right Sentinel 400 architecture for your environment.
24/7 Worldwide Technical Support
For urgent enterprise, operator, SIP security, fraud prevention and mission-critical voice infrastructure requirements.
+1 (819) 829-874924/7 Worldwide SupportGlobal technical support for enterprise, carrier and critical voice deployments.
Phone+1 (819) 829-8749
Security FocusSIP security, fraud control, TLS/SRTP, topology hiding and policy enforcement.
Carrier CapacityDesigned for high-capacity SBC architectures supporting 62,000+ concurrent calls.