Mediatrix 1124

Mediatrix 1124 Overview

The Mediatrix 1124 connects up to 24 analog phones and/or faxes to a broadband modem or LAN.
The Mediatrix 1124 enables cost-effective VoIP deployments in medium-size branch offices and multi-tenant applications. The Mediatrix 1124 has the additional benefit of supporting high compression codec’s simultaneously on each analog voice ports, thus saving valuable bandwidth.

As all other Mediatrix devices, the 1124 provides web interface, giving users a convenient access to the unit for initial set-up. The devices can also auto-provision by fetching their encrypted configuration from a TFTP or HTTP server making installation secure and transparent to the end-users. To further facilitate deployments, factory loaded configurations are possible. In addition, an optional intelligent PSTN bypass allows Mediatrix 1124 users to make emergency calls and maintain their phone service in the event of a power outage or network failure.

Mediatrix 1124 Key Benefits:

Voice Functionalities

• Carrier-grade voice quality
• T.38 support
• PSTN bypass option
  

Ease of configuration and management

• Automatic firmware and configuration file download
• SNMP and web management
• TFTP or HTTP auto-provisioning
  

Security

• Support for SNMPv3
• Encrypted configuration files support
• HTTP Digest authentication
  

Network functionalities

• QoS Support
• DHCP client
• Interoperable with equipment from leading industry vendors
• STUN Client

Functional Description

FXS Extensions
The Mediatrix 1124 is equipped with Central Office quality SLICs (Subscriber Line Interface Circuit) supporting all the BORSCHT (Battery feed, Overvoltage protection, Ringing, Signaling, Coding, Hybrid, Testing) functions and thus meeting most worldwide telephony standards. Station line length can reach up to 450m in the 2-wire “loop start” signaling arrangement.

The FXS extensions support On-Hook audio transmission, thus providing many advanced CLASS features such as message waiting indication, Caller- ID FSK transmission and such. The sinusoidal ringing signal frequency can be modified by software. Typical values range from 20 to 50 Hertz, 20 Hertz being the default frequency. Each extension provides its own ring generator and is capable of supplying up to 3 RENs (Ringer Equivalence Number).

Default settings for the FXS extensions are such that BellCore/North American standards are met. On request, port settings may be modified to comply with other known international standards. Software configurable port setting for international requirements is available.

Fax Interface
The Mediatrix 1124 can handle G3 fax transmissions at speeds up to 14.4 kbps. Automatic fax mode detection is also available on all extensions, as well as Real-Time Fax-Over IP with T.38 protocol stack. Data handling and synchronization formerly T.4 and T.30 protocols, are processed by the embedded DSP and CPU.

Quality of T.38 fax transmissions is dependent upon the system configuration, type of call control system used, type of Mediatrix units deployed, as well as the model of fax machines used. Should some of these conditions be unsatisfactory, performance of T.38 fax
transmissions may vary and be reduced below expectations.

Analog Modem Interface
The Mediatrix 1124 can be used with analog modems. When configured correctly, modems with high rate capabilities (for instance, V.90) will automatically fall back within the transmission range supported. Quality of modem transmissions is dependent upon the system configuration, quality of the analog lines, as well as the number of analog-to-digital and digital-to-analog conversions. Modem performance may therefore be reduced below the optimum values stated above.

Bypass Connection
In addition to the twenty-four extensions, the Mediatrix 1124 has an RJ-11 connector used to connect to a standard PSTN line. During normal operation, this line is switched out of the circuit through commuting relay. When power is removed from the Mediatrix 1124, or if
the IP network is down, the relay setting is restored to a connected state and the PSTN line can be used as an emergency Bypass line.

Consequently, a phone/fax used on the first extension will be directly connected to this PSTN Bypass line. The Bypass line can also be triggered with a software control signal. When the error conditions have been cleared or the power is restored, Extension one stays in Bypass connection until the device connected to it is On- Hook. This safety feature ensures that an emergency call does not get disconnected from the PSTN.

Housing & Power
The Mediatrix 1124 is designed to be rack-mounted on 19 in. industrial racks (EIA-310-D).
AC: Standard power cord receptacle (IEC 320 – C14) for universal AC input internal SMPS