Digital and analog interworking
Configuration options include E1/T1 PRI, ISDN BRI, FXS and FXO for phased TDM, PBX and PSTN migration.
Products
Mediatrix G7 Series
A secure multi-interface media gateway for connecting legacy PBXs and analog devices to SIP through configurable E1/T1 PRI, BRI, FXS and FXO interfaces.
PRI, BRI, FXS and FXO
Up to 120 voice channels
5 × Gigabit Ethernet
ANALOG + DIGITAL MEDIA GATEWAY
What you can do with it
The Mediatrix G7 Series is a secure multi-interface media gateway for connecting legacy PBXs and analog devices to SIP, cloud telephony and PSTN services through configurable PRI, BRI, FXS and FXO interfaces.
120voice channels
PRI / BRIdigital interfaces
FXS / FXOanalog interfaces
CAPABILITIES
Capabilities that matter for your project
Carrier-grade voice
Codec processing, echo cancellation, QoS, T.38 and G.711 fax/modem pass-through support production call flows.
Secure operation
TLS 1.3, SRTP, certificates, firewalling, mass provisioning, monitoring and packet diagnostics are built into DGW.
DEPLOYMENT FIT
Best suited for
- PRI and BRI-to-SIP
- Legacy PBX interconnection
- PSTN replacement
- Cloud telephony migration
- Branch survivability
KEY SPECIFICATIONS
Important selection data
Digital options1, 2 or 4 E1/T1 PRI; up to 8 BRI
Analog optionsUp to 8 FXS; 4 or 24 FXO, configuration dependent
Ethernet5 × 10/100/1000 Base-T RJ-45
Form factor1U; 48.5 × 19.5 × 4.4 cm
DOWNLOADS
Brochures and technical documents
Download the PDF files directly. Use the documentation portal for configuration guides, installation procedures and release-specific information.
REFERENCE ARCHITECTURE
See Mediatrix G7 Series in the complete voice path.
A product decision is only correct when both sides of the interface, the security boundary and the operating model are considered together.
NO PUBLIC INTERNET REQUIRED
Private LAN / isolated IP network
Local phones, a local IP PBX, Mediatrix gateways and Sentinel can exchange SIP calls entirely inside the organization. The voice path can remain on a private LAN, VLAN, campus network or isolated operational network.
OPTIONAL FOR EXTERNAL SERVICES
SIP carrier, PSTN, Teams or cloud
An external connection is used only when calls must reach public numbers, remote sites or hosted services. If the required call path is entirely local, the system can stay on the private network.
ANALOG / LEGACY EQUIPMENT
Legacy PBX
PRI, BRI or analog trunks carry existing extensions and call behavior.
Analog extensions
FXS interfaces supply the line presented to station equipment.
Carrier handoff
TDM or analog service is translated only when the exact interface is supported.
FXS / FXO / PRI / BRI
DIGITAL + ANALOG
Mediatrix G7
Connects PBX trunks and analog services through model-specific PRI, BRI, FXS or FXO interfaces.
PRIVATE CUSTOMER NETWORK
PRIVATE IP NETWORK / LANLocal SIP signaling + RTP media
INTERNALLocal IP PBX / call server
Controls extensions and internal routing on the private network. It may remain fully on-premises.
Local calls stay localPhones and the on-site PBX can communicate without a public Internet connection.
OPTIONAL EXTERNAL PATH
SIP service
Provides telephone numbers and PSTN connectivity.
Cloud PBX / Teams
Hosted call control is reached through the correct SIP and SBC architecture.
PRI / BRI / FXS / FXODGW conversionSIP signalingRTP media
READING THE DIAGRAM
What the gateway changes—and what it does not
- Phone or endpoint
- Creates or receives a call. An analog endpoint needs an FXS interface; an IP phone connects directly to the data network.
- Fax or modem
- Sends data as audio. It must be tested through the complete gateway, network and carrier path—not only for dial tone.
- Mediatrix gateway
- Converts analog or digital voice interfaces into SIP/IP while preserving validated legacy equipment.
- Cloud voice platform
- Hosts communications services such as Microsoft Teams Phone or CCaaS outside the customer site.
Conceptual architecture — final topology, capacity and interface configuration require validation.
GATEWAY SELECTION
Match the interface to the field requirement.
Port count alone is not enough. Endpoint behavior, line length, signaling, fax or modem transport, power and carrier acceptance all affect the final choice.
Always validate the exact SKU, interface modules and supported endpoint behavior before ordering or replacing an active line.| Selection factor | 4102 / 4102S | C7 Series | G7 Series | S7 / S7 LP |
|---|---|---|---|---|
| Primary role | Two-port analog adapter | Compact multi-interface gateway | Digital and analog media gateway | High-density FXS gateway |
| Interfaces | 2 FXS | FXS / FXO / BRI by model | PRI / BRI / FXS / FXO by model | 16 or 24 FXS |
| Deployment fit | Small site or single service | Branch and mixed legacy edge | PBX and TDM modernization | Campus and high-density analog |
| Special consideration | Fax / modem validation | Exact model configuration | Trunk and channel design | S7 LP for validated long-loop needs |
FREQUENTLY ASKED
What to know before the next step.
Confirm deployment model, concurrent sessions, registered users, interfaces, codecs, carriers, resilience and operational ownership before choosing the final model or SKU.
Validate the exact hardware or virtual configuration, DGW release, license, power, interface modules, interoperability and support coverage.
Use the linked M5 data sheet for selection and the Media5 documentation portal for configuration, installation and release-specific guidance.
READY FOR THE NEXT STEP?Request a free review
Build the right voice architecture.
Share the product, deployment and target outcome. M5 will identify the right technical and commercial path.