Skip to content
Microsoft Teams certified secure voice infrastructure · SBC · Gateways · Embedded voice
Audiotrix C4 | 4-FXS VoIP Gateway for POTS Replacement | M5 Technologies
Audiotrix C4 4-FXS VoIP Gateway

POTS Replacement for Elevators, Alarms & Analog Devices

The Audiotrix C4 is a reliable 4-FXS analog VoIP gateway designed to replace traditional POTS lines while preserving existing analog devices. It is ideal for elevator phones, alarm panels, hosted telephony, IP-Centrex, legacy copper replacement and secure analog-to-IP modernization.

4-FXS ANALOG VOIP GATEWAY
FXS 1
FXS 2
FXS 3
FXS 4
LAN
WAN
4 FXSAnalog endpoint continuity
POTSLegacy copper replacement
SIPCloud telephony migration
4 FXS PortsConnect up to four analog endpoints to modern VoIP infrastructure.
POTS ReplacementReplace traditional copper lines while preserving existing analog equipment.
Critical DevicesDesigned for elevator phones, alarm panels and technical environments.
Lower CostReduce infrastructure and operational costs with a smoother VoIP transition.

Keep analog devices. Remove legacy copper dependency.

The Audiotrix C4 provides a practical migration path for organizations that need to modernize phone lines, alarm circuits, elevator communication systems and analog endpoints without replacing every device in the field.

01

Elevator Phone Replacement

Move elevator emergency phones away from legacy POTS lines while maintaining analog endpoint continuity.

02

Alarm Panel Migration

Support alarm panel connectivity where analog devices must remain in service during IP modernization.

03

Hosted Telephony Access

Connect analog phones and devices to hosted telephony, SIP services and IP-Centrex environments.

04

Technical Site Continuity

Designed for uptime-sensitive technical environments where reliability and low maintenance matter.

05

Cost-Saving Migration

Reduce the cost of legacy copper lines and simplify operational infrastructure.

06

Analog Device Support

Preserve existing analog equipment while transitioning communications to modern IP infrastructure.

Integrated technical details for the Audiotrix C4.

These specifications are written directly into the page for SEO, buyer clarity and technical evaluation. No external datasheet is required for visitors to understand the product.

Analog Interfaces

  • 4 FXS analog ports
  • Analog telephone adapter functionality
  • Support for existing analog phones and endpoints
  • Designed for elevator phones and alarm panels
  • Analog continuity during VoIP migration

VoIP & SIP Services

  • SIP-based VoIP connectivity
  • Hosted telephony migration
  • IP-Centrex service compatibility
  • Analog-to-IP call routing
  • Reliable IP connectivity without compromising voice quality

Fax, Modem & Legacy Use

  • Fax over IP application support
  • T.38-oriented deployment use cases
  • Clear-channel fax and modem migration scenarios
  • Support for existing technical analog devices
  • Designed for environments where legacy endpoint replacement is not practical

Deployment Benefits

  • Easy deployment
  • Low maintenance operation
  • Professional-grade reliability
  • Smooth transition from traditional POTS lines to VoIP
  • Significant reduction in infrastructure and operational costs

Applications

  • Single elevator line replacement
  • Multiple alarm connections
  • Technical site analog connectivity
  • Legacy copper line replacement
  • Long-lasting alternative to traditional telephone service

Operational Fit

  • Commercial buildings
  • Multi-site facilities
  • Property management groups
  • Alarm and security integrators
  • Telecom operators and service providers

Where the Audiotrix C4 creates immediate value.

The C4 is especially valuable where existing analog devices are still required, but traditional POTS lines are becoming expensive, unavailable or difficult to maintain.

Elevators

Replace legacy elevator phone lines while preserving analog emergency phone equipment.

Alarm Panels

Modernize analog alarm connectivity and reduce dependency on traditional copper lines.

Commercial Buildings

Support analog endpoints across buildings, campuses and multi-site property portfolios.

Service Providers

Deploy a cost-effective analog-to-IP bridge for customers migrating to hosted voice services.

Technical Environments

Maintain uptime-sensitive analog devices while simplifying network-based service delivery.

Legacy Voice Migration

Transition gradually from POTS and copper infrastructure to SIP and IP-based telephony.

Analog endpoint to modern VoIP service.

The Audiotrix C4 acts as the bridge between analog endpoints and modern hosted telephony, SIP and IP-based communications environments.

1. Analog DeviceElevator phone, alarm panel, analog phone or legacy endpoint.
2. Audiotrix C4Provides 4 FXS interfaces for analog-to-IP migration.
3. IP NetworkConnects the site to modern voice infrastructure.
4. SIP ServiceRoutes calls through hosted telephony, VoIP or IP-Centrex services.
5. OperationsReduce legacy line cost while maintaining device continuity.

Why organizations choose the Audiotrix C4.

A

Lower Line Costs

Reduce dependence on expensive POTS lines and migrate services to modern IP-based infrastructure.

B

Preserve Existing Devices

Keep analog phones, alarms and elevator endpoints in service while modernizing the network layer.

C

Simple Deployment

Deploy a compact, reliable ATA gateway for technical environments where uptime and simplicity matter.

Audiotrix C4 questions buyers search for.

These answers improve search relevance for POTS replacement, elevator phone migration and alarm panel VoIP projects.

What is the Audiotrix C4?

The Audiotrix C4 is a 4-FXS analog VoIP gateway used to connect analog devices to modern IP-based voice services.

Is the Audiotrix C4 suitable for POTS replacement?

Yes. It is designed for replacing traditional POTS lines, especially for elevator phones, alarm panels and existing analog endpoints.

How many analog ports does the Audiotrix C4 provide?

The Audiotrix C4 provides 4 FXS ports for analog endpoint connectivity.

Who should use the Audiotrix C4?

It is a strong fit for property managers, alarm integrators, elevator service providers, telecom operators and organizations replacing copper phone lines.

Replace POTS lines without replacing your analog devices.

Whether you operate elevator phones, alarm panels, analog phones or multi-site technical systems, the Audiotrix C4 can help bridge your legacy endpoints into modern IP-based voice infrastructure.

  • 4-FXS analog endpoint modernization
  • POTS and legacy copper replacement
  • Elevator phone and alarm panel migration
  • Hosted telephony and IP-Centrex transition
  • Structured inquiry fields for better technical routing

Request a C4 Assessment

Tell us about your POTS replacement or analog endpoint modernization project.