01
Avoid Rip-and-Replace
Keep existing PBX systems, analog endpoints and digital trunks operational while gradually migrating to SIP trunks, IP PBX or cloud telephony.
Mediatrix G7 Series
Mediatrix G7 Series Secure PRI, BRI, FXS & FXO VoIP Gateway
The Mediatrix G7 Series is a secure all-in-one media gateway for organizations that need to modernize legacy PBX systems, PRI E1/T1 trunks, ISDN BRI, analog FXS/FXO lines, fax and modem services while moving toward SIP trunking, IP PBX, hosted UC and cloud telephony infrastructure.
Legacy PBX BridgeIntegrate incumbent PBX systems with SIP trunks and cloud telephony.
PRI / BRI / FXS / FXOSupport analog and digital telephony interfaces in one gateway family.
Secure SIPTLS, SRTP, X.509 certificates, OCSP and DoS protection.
Mass DeploymentZero-touch provisioning, TR-069 and remote management for operators.
Why organizations need this product
The G7 protects legacy voice investments while enabling secure SIP modernization.
Many organizations still depend on PRI trunks, ISDN BRI lines, analog FXS extensions, FXO PSTN lines, fax machines, modem services and legacy PBX systems. Replacing everything at once is expensive, risky and disruptive. The Mediatrix G7 Series gives enterprises, operators and critical infrastructure sites a controlled migration path from analog and digital telephony to secure IP communications.
02
Reduce Migration Risk
Bridge PRI, BRI, FXS and FXO into a managed SIP layer instead of forcing a sudden infrastructure replacement across every site.
03
Preserve Critical Services
Maintain fax, modem, emergency lines, branch telephony and PSTN fallback services that may still be required for operations or compliance.
04
Enable SIP Trunking
Connect legacy PBX infrastructure to modern SIP trunks and hosted voice platforms while maintaining routing control and numbering flexibility.
05
Improve Security
Use TLS, SRTP, certificates, DoS protection, VLANs and hardened management to modernize voice infrastructure without weakening security posture.
06
Simplify Multi-Site Operations
Support centralized provisioning, remote troubleshooting, monitoring and standardized deployments across branches, operators and critical sites.
G7 configuration guide
Accordion menu for G7 deployment variants and interface options.
Use these expandable sections to explain which G7 configuration is appropriate for each customer scenario.
PRI E1/T1 Gateway+
For organizations that need to connect legacy PBX PRI trunks to SIP trunks, IP PBX platforms or hosted voice services. Best for PSTN/TDM replacement, carrier migration and enterprise PBX modernization.
ISDN BRI Gateway+
For sites that still depend on ISDN BRI connectivity and need a controlled transition to SIP while preserving existing call routing and telephony behavior.
FXS Analog Gateway+
For analog phones, fax machines, modems, emergency phones, paging systems and legacy extensions that need to connect to a SIP-based communications core.
FXO PSTN Gateway+
For deployments requiring PSTN line access, local survivability, analog trunk integration or fallback routing when SIP or WAN services are unavailable.
Mixed Interface Gateway+
For complex migration projects where PRI, BRI, FXS and FXO must coexist during the transition from legacy telephony to secure SIP infrastructure.
Secure SIP Trunking Layer+
The G7 can serve as a controlled SIP migration point with TLS, SRTP, call routing, number manipulation, DNS SRV redundancy and centralized management.
Fax and Modem Continuity+
Supports T.38 fax and G.711 clear-channel pass-through to preserve business-critical fax and modem workflows during voice modernization.
Branch Survivability+
Helps maintain local calling, PSTN fallback and essential voice services at branch locations when cloud PBX or WAN connectivity is interrupted.
Technical positioning
Connect any analog or digital telephony interface to SIP.
The G7 Series is designed for organizations that need to preserve existing telephony investments while moving toward secure SIP trunking, IP PBX, hosted UC, cloud telephony and PSTN/TDM replacement.
01
Legacy PBX Integration
Bridge existing PBX systems to SIP trunks without forcing an immediate rip-and-replace migration.
02
PSTN & TDM Replacement
Convert ISDN, R2 and analog signaling into SIP for modernization projects driven by copper and TDM sunset.
03
Cloud Telephony Access
Provide SIP termination for cloud telephony, IP-Centrex and hosted unified communications services.
04
Branch Survivability
Support local switching and survivability when WAN connectivity to hosted UC or PBX services is unavailable.
05
Fax & Modem Continuity
Support T.38 realtime fax and G.711 clear channel fax/modem pass-through for critical legacy services.
06
Advanced Call Routing
Use local switching, number manipulation, hunt groups and criteria-based routing for complex deployments.
Integrated technical specifications
All key G7 technical details directly on the page.
No separate datasheet is required for buyer education. The specifications below cover media, SIP, digital and analog telephony, fax, QoS, security, management, networking, physical interfaces and operating conditions.
Media Processing
- Codecs: G.711, G.722, G.723, G.726, G.729a/b
- Echo: G.168 echo cancellation
- DTMF: Detection and generation
- Voice quality: Silence detection/suppression, comfort noise, de-jitter buffer, packet length configuration and packet loss concealment
IP Telephony
- SIP: SIP 2.0 RFC 3261 and 3GPP support
- Transport: UDP, TCP and TLS
- Media: RTP/RTCP RFC 3550 and SDP RFC 4566
- DTMF: In-band, out-of-band RFC 2833 and SIP INFO
- Resilience: DNS SRV redundancy, multiple trunks and IP-phone survivability
- IP: IPv4 and IPv6 dual stack
Digital Telephony
- Euro ISDN EDSS-1 / ETSI PRI / NET5
- BRI / NET3
- ISDN NI-2, DMS100 and 5ESS for US T1 PRI
- ISDN speech, audio and data including Fax Gr 4, UDI 64 and RDI 64
- ECMA-143 QSIG-BC
- E1 R2 line signaling ITU-T Q.421 and R2 MFC ITU-T Q.441
- T1/E1 E&M, MF-R1 and DTMF signaling
- Advice of Charge AOC-D and AOC-E
Analog Telephony
- Call forward, call transfer, call waiting and call hold
- 3-way conference calling
- On-hook and off-hook Caller ID
- Country tone presets, customizable tones and ring patterns
- Distinctive ringing, Message Waiting Indication and Music on Hold
- Echo cancellation and answer/disconnect signaling
- Battery reversal support for pay phones
Fax, Modem & QoS
- Fax: Realtime T.38 fax
- Pass-through: Clear channel G.711 fax and modem pass-through
- QoS: Bandwidth limitation and traffic shaping
- Tagging: ToS/DiffServ and IEEE 802.1p/Q
- Compression: High compression codec support for bandwidth-sensitive deployments
Security
- Denial-of-Service protection
- SIP over TLS
- SRTP with AES 128-bit cipher
- MIKEY and SDES key management
- TLS-encrypted configuration and management
- X.509 certificate management and OCSP revocation verification
- TLS 1.3 and secure TLS ciphers including ECDHE with AES-256 and SHA-384
Management & Troubleshooting
- Zero-touch provisioning
- TR-069, TR-104 and TR-111
- Auto provisioning through FTP, TFTP, HTTP and HTTPS
- Web GUI, SSH and TELNET
- SNMP v1, v2c and v3
- Syslog, SIP, log file and SNMP trap notifications
- Dual firmware banks and remote activation of service licenses
- Alarms, CDR, RTCP-XR/eMOS, media quality statistics, PCM capture, IP network capture and diagnostic traces
Networking
- IPv4 and IPv6
- Multiple IP addresses per link or VLAN
- Multiple VLANs per link
- DHCP client and DHCP server
- PPPoE RFC 2516
- IEEE 802.1q and DSCP QoS tagging for media, signaling and management
- IEEE 802.1x wired authentication and LLDP-MED
- Stateful firewall with rate limitation and automatic blacklisting
- Static routing and NAPT
Physical Interfaces
- 5 × 10/100/1000 Base-T Ethernet RJ-45 connectors
- 2 × TDM sync RJ-45 connectors
- 1, 2 or 4 × RJ-48 E1/T1 connectors depending on configuration
- 8 × RJ-48 BRI S/T connectors depending on configuration
- 8 × RJ-11 FXS connectors depending on configuration
- 4 or 24 × RJ-11 FXO connectors depending on configuration
Power & Environment
- Power: Internal 100–240 VAC power supply
- Operating temperature: 0°C to 45°C
- Storage temperature: -20°C to 70°C
- Humidity: Up to 85%, non-condensing
- Dimensions: 4.4 cm H × 48.5 cm W with mounting brackets × 19.5 cm D
- Weight: 3 kg
How it works
Preserve legacy systems. Add secure SIP intelligence.
The G7 functions as a controlled migration layer between incumbent analog/digital telephony and the modern IP communications core.
1. Legacy SidePBX, PRI, BRI, analog phones, FXO lines, fax, modem and PSTN interfaces.
2. Mediatrix G7Terminates and converts analog or digital telephony into managed SIP sessions.
3. Routing LayerApplies call filtering, number manipulation, local switching and hunt groups.
4. Secure SIPProtects signaling and media through TLS, SRTP, certificates and hardened networking.
5. Modern CoreConnects to SIP trunks, IP PBX, cloud telephony, hosted UC or monitoring systems.
FAQ
Mediatrix G7 questions buyers search for.
SEO-ready answers for SIP trunking, legacy PBX integration, PRI/BRI migration, PSTN replacement and secure media gateway projects.
What is the Mediatrix G7 Series used for?
The G7 Series connects analog and digital telephony infrastructure to SIP networks, cloud telephony services, IP PBX systems and PSTN/TDM replacement projects.
Does the G7 support PRI, BRI, FXS and FXO?
Yes. Depending on configuration, the G7 supports E1/T1 PRI, ISDN BRI, FXS and FXO interfaces.
Is the G7 suitable for SIP trunking?
Yes. It supports SIP trunking, multiple trunks, DNS SRV redundancy, local switching, call filtering and number manipulation.
Does the G7 support fax over IP?
Yes. It supports realtime T.38 fax and clear channel G.711 fax/modem pass-through.
Secure assessment request
Plan a controlled migration from legacy telephony to secure SIP.
Use the Mediatrix G7 Series when your project requires PRI, BRI, FXS, FXO, fax/modem continuity, call routing control, secure SIP transport and enterprise-grade management.
- Good fit for SIP trunking and PSTN/TDM replacement
- Supports analog and digital telephony migration
- Includes security, provisioning and monitoring capabilities
- Structured project fields for better lead qualification