Image Alt

AudiotrixC4 C8

The Audiotrix C2 is a VoIP Analog Adaptor that interconnects analog telephones, faxes, and modems into SIP based systems. This ATA allows operators to shorten deployment time and ensure a highly secure environment to enable cloud telephony services into branch offices and SMBs.

Technical Specifications

Session Border Controller

G.711 (A-law and μ-law), G.729a/b

G.168 echo cancellation

DTMF detection and generation

Silence detection/suppression and comfort noise

Configurable de-jitter buffer and packet length

Analog Telephony

Support for: call forward

Support for: call transfer

Support for: conference call

Support for: call waiting

Multiple country presets

Multiple country presets

Customizable tones and ring patterns

Echo cancellation

Message Waiting Indication (MWI), via FSK

On-hook/off-hook caller ID generation

Fax and Modem Support

RealtimeT.38 fax

Clear channel (G.711) fax and modem pass-through

Power Supply

External 100-240 VAC power supply

Physical Interfaces

3 x 10/100 Base-T Ethernet RJ-45 connectors

2 x RJ-11 FXS connectors

IP Telephony Protocol

SIP (RFC 3261) over: UDP



RTP (RFC 3550)

SDP (RFC 4566)

Redundancy support via DNS SRV

IPv4 and IPv6 dual stack


Zero-touch provisioning




Scripts/firmware files

Syslog, log file


IPv4 – IPv6

DHCP client

PPPoE (RFC 2516)

QoS traffic shaping


Static routing


DHCP Server

Operating Environment

Operating temperature: 0ºC to 50ºC

Storage temperature: -25ºC to 85ºC

Humidity: up to 85%, non-condensing


Height: 3.2 cm approx.

Width: 8.0 cm approx.

Depth: 12.0 cm approx.

Weight: 120 g

Key Features

Data Network

WAN: 1 x 10/100/1000Mbps Ethernet port
LAN: 1 x 10/100/1000Mbps Ethernet ports

Robust Security

Encrypted media, signaling, and management
Deep packet inspection firewall with DoS protection

Easy Configuration and Management

Zero-Touch configuration
Intuitive Web GUI
Customisable factory settings


Multiple IP addresses and VLANs
NAT, firewall, and router capabilities


Interconnects any Device to SIP

The Audiotrix C Series links any analog connection to an IP network and delivers a rich feature set for a comprehensive VoIP solution.

Legacy PBX System Gateway

With FXS ports, local call switching, and userdefined call properties (including caller/calling ID), the Audiotrix C Series ATA smoothly integrates into legacy PBXs.

Highly Reliable Fax & Modem Transmissions over IP

With T.38 and clear channel fax and modem passthrough capabilities, the Audiotrix C Series ensures seamless transport of voice and data services over IP networks.

VPN Client/Server

The Audiotrix C Series features new firmware, offering advanced networking features, set and use the VPN client/server according to your corporate requirements

Access our Documentation Portal and get in touch with our integration experts for more information.