PSTN to All-IP

The migration to IP-based telephony is inevitable. With a major reduction in infrastructure and operational costs, IP telephony has grown exponentially and gained popularity in the past two decades.


Although inescapable, the transformation represents an extraordinary business opportunity for telephony and service providers willing to ultimately unplug their public-switched-telephone network and replace it with an all–Internet Protocol (IP) network for delivering voice services.

PSTN to All-IP – What We Offer

M5 Technologies offers a complete and cost-effective VoIP CPE portfolio (“Mediatrix”) that enables mobile and fixed providers to deliver SIP trunks to their customers, without any of the inconveniences of migrating a telecommunication system.

Through the deployment of on-premises SBCs – Session Border Controllers, alongside with VoIP gateways and analog adaptors, M5 Technologies (also known by its reliable and well-known product brand Mediatrix) allows for a seamless transition from analog and TDM systems to IP services.

Migrating from PSTN to IP with Mediatrix

Reliable and cost-effective, our Sentinel SBC overcomes every challenge of the transition from an analog or digital PSTN network to the IP by reducing infrastructure and operational costs. Superior voice quality is guaranteed and next-generation communication services are supported.

Access the Sentinel SBC Web page to learn more about this solution

Main Benefits

1. Most interoperable brand on the market

  • With an endless list of codecs and protocols available in the market, Mediatrix is proven to be widely interoperable with the great majority of legacy and IP equipment including TDM and IP-PBXes; analog, digital, and IP phones; faxes, modems, and PoS).
  • Mediatrix is present in more than 100 countries and formally certified with the most relevant equipment manufacturers, softswitches, and Cloud Communications platforms across the globe, including Cisco, Mitel, Unify, Panasonic, Alcatel-Lucent Enterprise, Metaswitch, Ericsson, and others.

2. All-in-one pay-as-you-go SBC designed for scalability

  • Sentinel SBC is the ultimate solution for a great variety of scenarios (including SIP trunking, network demarcation, survivability, third-party application integration, and more). In addition, this modular multi-business platform performs SIP normalisation translating any vendor implementation into a single well-defined SIP interface, making sure all legacy and IP equipment (regardless of the brand) will connect smoothly and work properly.
  • The modular design of Sentinel SBC provides the ability to accommodate for communication systems of any sizes using any technology. Sentinel supports analog FXS and FXO, digital ISDN E1/T1 and BRI, and IP systems, making upscaling much simpler and cheaper. Customers can order individual modules (such as telephony cards and SBC licences) or a combination of them assembled at the factory into a Sentinel base unit, or added to previously deployed units.

3. Enable next-generation communication services

  • Non-Voice communications can be a big challenge for many providers but we are experts at that! Throughout the years, playing an essential role in the successful SIP migration of many carriers/providers, we developed an in-depth understanding and ability to excel at all non-voice communication applications, i.e. legacy faxes and modems as well as efficient support to Hosted Telephony and UCaaS applications.
  • Furthermore, we understand that a full SIP migration (especially when it is done at once) may be unrealistic for some companies. Due to the high costs of upgrading the entire infrastructure into an all-IP system, businesses can opt for a gradual Legacy-to-IP transformation or keep a hybrid system. Regardless of the scenario, our portfolio of VoIP solutions guarantees no disruption of customer service and, as consequence, minimal churn. Sentinel also allows for integrating future services in the operator’s portfolio that can generate additional revenue.

 4. Manageability and long-term support

  • Mediatrix SBCs and gateways support Zero-Touch Provisioning and offer extensive management capabilities. Its own Cloud-based Element Management System, Virtuo EMS, ensures easy remote installation, configuration, license activation, monitoring, and troubleshooting for Mediatrix unit operations. This reduces OPEX and the need for on-site technical support.
  • M5 Technologies is a VoIP expert operating since the early ’90s. Over the last 25 years, millions of devices worldwide have been using our patented SIP technology. We have a deep knowledge of E1/T1/R2/BRI and FXS/FXO analog appliances, whose technologies are being phased out of the product lines of many competitors, but not us. This gives us the ability to continue supporting legacy technologies, besides adapting our products and portfolio to quickly meet customer’s needs.

Zero-Touch Provisioning Solution

Service providers, in order to perform rapid and flexible deployments and properly serve the end-costumer, need a strategy to maximize device management. In this connected era, it can become difficult to keep track of every single device while keeping the costs at a minimum. At M5 Technologies , we believe that innovation is the best way to approach this problem.

M5 Technologies-telephony-voipOur solution: Zero-Touch Provisioning

The Virtuo Platform and its Zero-Touch Provisioning (ZTP) feature is an essential part of a service provider’s strategy to reduce operational costs, develop revenues, and increase customer satisfaction while deploying Mediatrix products.

As service providers’ costumer base grow, the number of deployed devices grows as well. As soon as this happens, good provisioning, management, and monitoring tools become essential to:

  • Standardise and automate the deployment process.
  • Minimize truck rolls and remove pressure on the configuration/installation team by remotely configuring and accessing devices.
  • Give insights on the current system health status to the operation department to detect and diagnose issues before the end-user can see them.

Keeping in mind service providers goals to create incremental revenues and increase operational efficiency, Virtuo gives them a cutting-edge management tool with a low total cost of ownership. M5 Technologies’s Virtuo EMS adds value to service providers with benefits such as:

  • Simplified inventory management: avoid having multiple software configurations in stock.
  • Zero-touch provisioning: automatically configure and update devices when the device is first turned on.
  • Redirect server feature: dynamically connects to an existing management system.
  • Cost reduction: eliminate the need for a technician to manually apply changes to a device.

Virtuo’s process


Step 1: Warehousing

Service providers warehousing

Mediatrix units are automatically imported into Virtuo when shipped from M5 Technologies.


Step 2: Order Processing

Order processing


Virtuo builds the configuration templates, enabling units for installation and initial set-up.


Step 3: Zero-Touch Provisioning

zero touch provisioning

After initial power-up, units connect with Virtuo through Internet to complete installation. At this point, units are fully operational.


Step 4: Remote Management

Remote management

Units will connect with Virtuo periodically or when the unit is restarted, to recover or update configurations.

Virtuo is the perfect addition for any service providers already equiped with Mediatrix products.    The system helps cut costs while adding value with easier, faster, zero-touch management.

Fax and Modem over IP

Mediatrix_fax_over-ipFor many enterprises in different industries, fax and modem transmissions remain one of the most important communication methods. In areas such as finance, government, law, health, real estate, offshore, etc., fax and modem over IP are one of the essential ways to transfer a large number of documents and data, on a daily basis.

Keeping the reliability and quality of those communications without risk while migrating from TDM-based PBXs to IP telephony networks can be a challenge. During the transition from traditional telephony lines to VoIP in the operator network, or the existing legacy telephony systems to the IP-PBX and IP-phones inside enterprises, some interoperability issues may occur between different fax protocols and standards used by the VoIP systems and the enterprise.

M5 Technologies Expertise – What We Offer

M5 Technologies VoIP Adaptors (ATAs), Media Gateways and Session Border Controllers (SBCs) overcome IP fax and modem interoperability challenge by normalising the transmission across the networks, ensuring great flexibility, cost savings and high quality of service.

When it comes to faxes and modems, reliability and security are pre-requirements for many businesses that cannot suffer from failure or loosing data. M5 Technologies solutions offer trustful connectivity and communications to the new IP telephony infrastructure in many scenarios and are adaptable to specific enterprise needs.

Key Benefits

  • Highly interoperable with hundreds of faxes and modem models.
  • Zero touch configuration and easy installation.
  • Portfolio with several ATAs, Media Gateways and SBC models to address operators’ needs of deployment.
  • Compatibility with all SIP protocols and all codecs for fax and modem, such as G.711 and T.38.
  • Survivability: No risk of failure and poor communication during the PSTN replacement.
  • Flexibility to deploy the equipment at the service provider or enterprise, on the edge or in the network, according to the requirements.
  • QoS control for data transmission quality.
  • Cost savings made possible when keeping the existing legacy investments.



A Partner for Reliable Deployments

Due to the high interoperability and quality of M5 Technologies products, the major telecom operators doing PSTN replacement in the world choose M5 Technologies for their deployments:

  • SIP Trunking: M5 Technologies gateways connect to legacy PBX (PRI/BRI);
  • IP Centrex: M5 Technologies ATAs connect multiple analog ports to phones, faxes, and modems;
  • PSTN Replacement.

Regardless of the use case or scenario, M5 Technologies has the best solutions with VoIP adaptors, media gateways, and SBCs to keep the communication through faxes and modems reliable and cost effective for operators and enterprises.

Fax and Modem over IP – Quality Assurance

For each new firmware release, M5 Technologies technologies go through a complete Quality Assurance Test Plan ensuring improved quality to the launch:

  • Software Stability tests
  • Behavior – We make sure that the user experience does not change
  • Features set – We make sure that all fax and modem features perform at their best
  • Audio quality
  • Image quality
  • Modem Connection Reliability
  • Regression tests – We make sure that new releases behave the same way, and better, than older ones

In-House Lab

M5 Technologies has a complete in-house lab where all the tests are made reproducing real life scenarios based on the most complex deployments and, more than this, going further and beyond customers real use cases.

This way we guarantee the durability and resilience of our products to offer the highest quality of service regardless of how M5 Technologies units are used.

Our stringent test procedures for Faxes and Modems include:

  • SIP over TLS, TCP and UDP
  • Secure audio: SRTP
  • Non-secure audio: RTP
  • FAX over PCMA, PCMU, and T.38
  • Modem over PCMA and PCMU
  • Speed tests range from 7200 BPS up to 57.600 BPS

Access to learn more about our complete product set for connecting fax and modem over IP.

Relevant Facts

  • Fax and modem tests take more than 600 hours per each release and minimum of 10 pages per each fax sent/received.
  • Interoperability tests are performed with any fax devices against detailed profiles of 147 V.17 and 27 V.34 fax machines and modems.
  • Release criteria are 99% of success: no image errors are allowed in fax transmissions.
  • More than 3000 fax/modem calls for each release.
  • Less than 10 failures in 3000 calls: less than 0.3%.

Decades of Experience

M5 Technologies has a long history of technical innovation. Our expertise in analog and digital audio processing started in 1992 as a sound card manufacturer. This in-depth experience with voice digitalization, tone analyzing and firmware development was the definite basis for M5 Technologies to get into the VoIP market in the mid-90s.

M5 Technologies has cumulated 20 years of experience since it entered the IP Telephony industry. The company became one of the pioneers in SIP protocol development standards and has consequently been improving fax and modem transmissions throughout decades.

  • Formally certified in 50 countries with deployments in more than 75 countries
  • Carrier-grade quality software and hardware with very low RMA level – below 1%
  • In-house software development, M5 Technologies owns full IPR on its core software
  • Expertise with legacy equipment