Low-cost Transmitter Links, Permanent Studio Links.

• Audio over IP
• 384 Kbps X.21
• SNMP and Web Server
• Linear, aptX and G.722 Codecs

Professional Quality Audio

The Systembase C500ip range of digital audio codecs have been designed and manufactured to deliver unparalleled performance and reliability for professional real-time audio applications. Both models incorporate the fast apt-X Sub Band ADPCM compression system with a coding delay of only 2.8ms at a sampling rate of 48KHz, as well as Linear PCM and G.722. The C510ip ISDN model also supports G.711 coding algorithm to provide compatibility with other codecs. Additional design features include 24 Bit analogue and AES audio interfaces. The analogue interface is electronically balanced resulting in a high Common Mode Rejection Ratio (CMRR) for a significant improvement in performance.

Audio Over IP

The C530ip has been designed to enable two simultaneous connections. A connection can be made or broken without disrupting other connections that may already exist. When making a connection to a remote codec, the user can specify the audio to be duplex, receive only or transmit only. If the receiving codec is not able to implement the requested audio mode due to a conflict with an existing connection, Automatic Negotiation will take place to provide a suitable operating mode. Automatic Negotiation allows the remote codec to connect without any prior knowledge of the local codec's connection status.

Forward Error Control

IP connections are not always 100% error free and occasionally the IP network will loose a packet of data. In the case of a typical broadband ADSL connection packet loss can be fairly frequent. Forward Error Control (FEC) facilitates the transmission of additional information that allows the receive codec to automatically re-create the missing packet from data contained within the neighbouring packets. The Systembase FEC process does not require any additional IP communication and consequently minimises the end-to-end audio delay.

Link Security

The Group Security ID feature provides a very useful mechanism for securing a group of IP codecs. This feature is enabled by entering the same 8 digit ID code into all participating codecs. The ID code is then used by the codec to automatically reject all packets that do not have a matching code.

SNMP Management

The C500ip Codecs provide support for SNMP (Simple Network Management Protocol). SNMP allows the codec to be managed by industry standard, third party applications that are capable of monitoring and controlling equipment over LAN and WAN environments.

Headroom Adjustment

A Recent addition to the C500ip range of codecs has been the provision for selecting the effective headroom at the codecs analog interface. By default the analog headroom is set at +12dBu. However, the user may now change to headroom to +18dBu from either the front panel menu or web server interface.

Digital Audio Interface

AES3 digital audio interface is provided on all models, and is equipped with automatic sample rate conversion to simplify the problems of connecting between a studio reference clock and the ISDN network clock. The AES3 interface is supported via two transformer isolated XLR connectors located on the rear panel.

Web Server

The C500ip range of audio codecs features a built in Ethernet connection. This facility allows each codec to be allocated a unique IP address and remotely managed using the standard windows web browser. To enable a hassle free experience the WEB server pages have been developed to avoid the use of active x components that may require administrative rights to install on the local computer.

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