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Interconnect Any Device to SIP
Link analog phones, fax machines, modems, PBX trunks and BRI interfaces to IP networks while preserving operational continuity.
Mediatrix C7 Series Technical Page
Secure FXS, FXO & BRI Gateway for Analog-to-SIP Modernization
The Mediatrix C7 Series combines a VoIP analog adaptor and media gateway in a secure platform for branch offices, SMBs, operators and system integrators. It connects analog terminals, PSTN trunks, ISDN BRI and legacy PBX environments to modern SIP networks with reliable voice, fax and modem transport over IP.
Mediatrix C7 Series
FXS • FXO • ISDN BRI • SIP MEDIA GATEWAY
FXS
FXO
BRI
ETH
FXS/FXOAnalog terminal and trunk connectivity
BRIISDN integration depending on model
12 ch.Up to 12 voice channels by configuration
Legacy-to-IPConnect analog and ISDN assets to modern SIP networks without replacing the full installed base.
FXS / FXO / BRISupport mixed interface requirements across phones, fax, modems, PSTN trunks and PBX environments.
Fax & ModemSupport T.38 and clear-channel pass-through for demanding voice and data applications.
Mass DeploymentAdvanced provisioning and management capabilities reduce operational cost at scale.
Technical positioning
A flexible VoIP gateway for mixed analog, PSTN and ISDN BRI environments.
The C7 Series is designed for organizations that need a practical, field-ready bridge between existing telephony assets and SIP infrastructure. It is a strong fit for POTS replacement, TDM replacement, legacy PBX continuity, PSTN access, branch survivability and analog endpoint modernization.
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Legacy PBX Gateway
Use FXS, FXO and BRI interfaces with local call switching and user-defined call properties to integrate legacy PBXs with SIP services.
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Reliable Fax & Modem Over IP
Support T.38 fax and clear-channel fax/modem pass-through for data services that still depend on analog endpoints.
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PSTN Replacement
Support operators and enterprises migrating from copper, PSTN or TDM access toward managed SIP infrastructure.
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Branch Office VoIP
Deliver cost-effective connectivity for SMBs and branch offices where existing analog terminals remain useful.
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Advanced Mass Management
Provision and manage deployments more efficiently through scalable configuration and operational workflows.
Full technical specifications
Mediatrix C7 Series technical details directly in the page.
This page includes the technical buyer information directly in HTML to support SEO, reduce installation friction and help engineers evaluate the C7 Series without relying on a separate datasheet.
| Product Type | Secure VoIP media gateway and analog telephone adaptor platform for analog, PSTN and ISDN BRI integration with SIP/IP networks. |
|---|---|
| Primary Interfaces | FXS, FXO and ISDN BRI interfaces depending on model and configuration. Various combinations are possible, so exact port presence and location depend on the unit model. |
| FXS Connectivity | FXS cards may provide 4 x RJ-11 connectors to attach conventional analog telephones or G3 fax machines. Used for analog endpoint continuity and IP migration. |
| FXO Connectivity | FXO cards may provide 4 x RJ-11 connectors for switched circuit network access and integration with IP phones, FXS devices, softphones, IP-based PBX and key systems. |
| BRI Connectivity | BRI cards may provide 4 x RJ-48C connectors for ISDN BRI connectivity. BRI LED behavior indicates link and configuration status. |
| Voice Channels | Supports up to 12 voice channels depending on model, interface mix and deployment configuration. |
| Ethernet | ETH1 and ETH2 10/100 Base-T Ethernet RJ-45 connectors. ETH1 is commonly used as uplink/WAN by default; ETH2 is used for LAN access depending on configuration. |
| USB | USB connector available on the hardware platform for supported operational and service use cases. |
| Fax & Modem | T.38 fax support and clear-channel fax/modem pass-through capabilities for transport of voice and data services over IP networks. |
| Call Routing | Supports SIP, telephony interface routing, user-defined call properties and local call switching for legacy PBX and PSTN integration scenarios. |
| Interoperability | Designed for interoperability with major IP phone manufacturers, softswitches and cloud communications services. |
| Provisioning | Advanced provisioning capabilities support integration into mass management systems and help reduce operational costs for service providers and large deployments. |
| Security & Network Control | Secure gateway architecture designed for controlled SIP migration, NAT/firewall-aware deployment, QoS-controlled voice traffic and managed IP connectivity. |
| Power | External 12 Vdc 1.5 A power supply. |
| Reset / Default | Reset/default switch allows the unit to be returned to known values for operational recovery and controlled deployment workflows. |
| Target Deployments | Branch offices, SMBs, operators, system integrators, multi-site deployments, POTS/PSTN/TDM replacement projects, legacy PBX gateway projects and critical analog endpoint modernization. |
Applications
Where the C7 Series creates infrastructure value.
The C7 Series is strongest where organizations need to preserve analog or ISDN assets while modernizing the network layer, improving manageability and migrating toward SIP-based service delivery.
Branch Offices & SMB
Cost-effective migration for sites that still depend on analog phones, fax or existing PSTN access.
- Analog terminal continuity
- Local PSTN access
- Reduced copper dependency
- Controlled SIP migration
Legacy PBX Modernization
Bridge legacy PBX systems, trunks and endpoints into SIP and IP network architectures.
- FXS endpoint support
- FXO trunk integration
- BRI migration scenarios
- Local call switching
Fax, Modem & Data Services
Support analog data endpoints with T.38 and clear-channel transport across IP networks.
- G3 fax machines
- Modem pass-through
- Alarm panels
- Data-over-voice continuity
Operators & Service Providers
Support PSTN replacement and TDM replacement projects with manageable CPE gateway infrastructure.
- Mass provisioning
- Customer premise gateway
- Analog service continuity
- SIP service migration
Elevators, Alarms & Safety Lines
Modernize critical analog endpoints that cannot be easily replaced but must connect to IP networks.
- Elevator lines
- Alarm connections
- Emergency phones
- Monitoring centers
Enterprise & Industrial Sites
Deploy mixed analog, PSTN and SIP connectivity across facilities that require continuity and reliability.
- Plant communications
- Facility intercoms
- Analog device protection
- Operational continuity
How it works
Preserve existing telephony assets. Add SIP network intelligence.
The C7 Series sits between legacy analog/ISDN infrastructure and modern IP networks, giving organizations a practical migration layer instead of a costly rip-and-replace strategy.
1. Legacy EndpointAnalog phone, fax, modem, alarm, elevator line, PBX trunk or ISDN BRI interface.
2. C7 GatewayTerminates FXS, FXO or BRI interfaces and maps traffic into managed VoIP workflows.
3. Routing LayerLocal switching, call properties and telephony interface routing support controlled migration.
4. Secure IP NetworkConnects through Ethernet to SIP services, PBX, SBC, operator core or cloud communications platforms.
5. OperationsSupports provisioning, monitoring, voice continuity and lower-cost modernization at scale.
Business value
Why organizations choose the C7 Series.
A
Lower Migration Cost
Reduce infrastructure and operational costs by keeping analog assets active while moving toward SIP service delivery.
B
Flexible Interface Mix
Support FXS, FXO and BRI use cases depending on the model, making one platform relevant to many migration scenarios.
C
Deployment Efficiency
Advanced provisioning and mass management help service providers and integrators deploy, support and scale more efficiently.
FAQ
Mediatrix C7 Series questions buyers search for.
SEO-ready technical answers for analog gateway, FXO gateway, FXS gateway, BRI gateway and PSTN replacement searches.
What is the Mediatrix C7 Series?
The Mediatrix C7 Series is a secure VoIP gateway and ATA platform that connects analog terminals, PSTN trunks and ISDN BRI interfaces to SIP/IP networks.
Does the C7 Series support FXS, FXO and BRI?
Yes. Depending on the model and configuration, the C7 Series supports FXS, FXO and ISDN BRI interfaces.
Is the C7 Series suitable for fax over IP?
Yes. It supports T.38 fax and clear-channel fax/modem pass-through capabilities for transport over IP networks.
Who should use the Mediatrix C7 Series?
It is suited for operators, SMBs, branch offices, enterprises and system integrators working on POTS replacement, PSTN replacement, legacy PBX integration and analog endpoint modernization.
Secure assessment request
Plan your C7 migration with the right interface mix.
Tell M5 Technologies about your analog, PSTN, ISDN BRI, fax, modem or legacy PBX environment. Our team can help evaluate the right C7 model, migration path and SIP integration architecture.
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