Validate every endpoint
Confirm signaling, REN, dialing, fax/modem behavior, alarm workflows and carrier compatibility before selection.
Solutions
POTS Replacement
Migrate compatible analog endpoints from copper services to validated SIP/IP infrastructure without replacing every field device.
Keep compatible analog equipment in service
Identify each phone, fax or other analog device, the number of lines and sites, and the service it depends on. Validate the complete call path, power continuity and operational requirements before migration.
Request a Gateway QuotationEndpoint validation
Power and failover planning
Phased cutover
POTS REPLACEMENT
What you can do with it
Migrate compatible analog devices from copper services to managed SIP/IP infrastructure using the correct gateway, carrier, power, monitoring and acceptance plan.
2–24FXS port platform choices
T.38fax option
Phasedmigration approach
CAPABILITIES
Capabilities that matter for your project
Choose the right gateway
Use 4102S, C7, S7 or S7 LP according to port density, wiring length and environmental exposure.
Engineer continuity
Address power, network, failover, monitoring, emergency calling and operational ownership before cutover.
DEPLOYMENT FIT
Best suited for
- Elevator and emergency phones
- Fax and modem lines
- Hospitality and healthcare
- Campus and facility phones
- Branch analog services
KEY SPECIFICATIONS
Important selection data
Low densityMediatrix 4102S or compact ATA
High densityMediatrix C7, S7 or S7 LP
SecurityTLS/SRTP and managed DGW configuration
DOWNLOADS
Brochures and technical documents
Download the PDF files directly. Use the documentation portal for configuration guides, installation procedures and release-specific information.
Products to compare
A starting point for your project. Review the model data sheet before ordering.
Audiotrix C2, C4 & C8
Choose 2, 4 or 8 FXS ports for analog phones and small sites.
- Selection criterion
- Exact firmware and a real-world T.38 test when fax is required.
Mediatrix 4102 / 4102S
Connect two analog endpoints to an IP voice service.
- Selection criterion
- Endpoint behavior, carrier compatibility and fax requirements.
Mediatrix C7 Series
A compact gateway for a small analog or mixed-interface installation.
- Selection criterion
- FXS versus FXO ports and the exact C7 configuration.
Mediatrix S7 / S7 LP
Bring multiple analog extensions onto an IP network.
- Selection criterion
- Line count, cabling and S7 versus S7 LP requirements.
SOLUTION BLUEPRINT
How POTS Replacement changes the voice path.
The M5 layer sits between what must be preserved and the destination architecture, making security, translation and failure behavior explicit.
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 telephone
Continues to present an analog user experience.
Fax / modem
Needs data-over-audio validation across the selected carrier.
Elevator / alarm
Requires power, supervision, location and service-owner approval.
FXS / FXO / PRI / BRI
CONVERSION POINT
Mediatrix gateway
Presents the correct analog or digital interface, then converts validated traffic to SIP.
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 carrier
Terminates external calls and determines supported fax or modem behavior.
PBX / cloud voice
Receives calls, applies the dial plan and connects users or workflows.
Copper / TDMFXS · FXO · PRI · BRISIPRTP / T.38
READING THE DIAGRAM
A gateway replaces the line interface—not the complete service obligation
- 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.
- SIP carrier
- Connects the organization to the public telephone network and supplies telephone numbers and external call routes.
Reference flow — carrier, platform, jurisdiction and field requirements determine the production design.
BEFORE / AFTER
Turn an uncontrolled migration into an engineered transition.
Use these checkpoints to evaluate a pots replacement project before product selection or cutover.
The recommended design depends on the deployed carrier, PBX or UC platform, interfaces, call volume, failure modes and regulatory context.| Decision area | Uncontrolled approach | M5 architecture | Acceptance evidence |
|---|---|---|---|
| Interoperability | Assume systems will connect | Normalize signaling and media at a defined boundary | Documented end-to-end call tests |
| Security | Expose internal voice domains | Apply identity, topology and transport controls | Approved routes, certificates and logs |
| Continuity | Cut over every site together | Preserve required services and phase migration | Failover, rollback and exception tests |
| Operations | Treat go-live as the finish line | Assign monitoring, updates and escalation ownership | Runbook, backups and support entitlement |
FREQUENTLY ASKED
What to know before the next step.
Document every carrier, PBX or UC platform, endpoint class, site, interface, call flow, security boundary and failure requirement.
Yes. A phased architecture can preserve approved services while routes, sites and users move in controlled stages with rollback criteria.
Normal and exceptional calls, encryption, routing, media, failover, monitoring and operational ownership should all pass documented tests.
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.