The WorldNet Oslo Multiplexer is the industry's most robust professional, platform for high quality FM, HD Radio/DAB and Surround Sound audio contribution and distribution. Winner of Radio Magazine's Advancement in Radio Technology Award for Audio & Data Transmission, the WorldNet Oslo offers broadcasters and service providers a flexible, highly reliable and multi-featured audio multiplexing solution.

Designed to transport both compressed or uncompressed audio and data over various digital networks, the WorldNet Oslo is based around a 19 inch, 3U high standard rackmount chassis which is card-based expandable. Redundant power supplies, “hot-swappable” cards and automatic back-up functionality ensure 24/7/365 reliability for mission-critical applications such as studio to transmitter links.

Various network interface modules eliminate the need for external multiplexers or media converters. Audio can be transported via synchronous or packet-switched networks with support for T1 (1.5Mbit/s), E1 (2Mbit/s) and Ethernet (IP) interfaces. Both the T1 and E1 transport cards feature cross-connect functionality with extensive timeslot management enabling advanced network features such as drop and insert, drop and copy, and backup schemes, in addition to simple unprotected point-to-point links.

A maximum of 24 audio channels in simplex mode and a minimum of 2 audio channels in duplex mode are possible in each frame. Plug-in audio modules in over 12 different configurations offer analog, AES/EBU, simplex, duplex and 5.1 phase-locked options.

As well as uncompressed linear audio and J.57 companding, the WorldNet Oslo also supports 16 or 24-bit Enhanced apt-X® offering cascade-resilient, near-lossless audio quality with under 2ms delay.

All unit settings can be managed remotely using APT's highly acclaimed Codec Management System (CMS); a powerful graphical user interface that provides extensive configuration, control and fault monitoring capability of multiple WorldNet Oslos and other APT IP audio codecs. In-band Management enables control and monitoring of a network of units over E1/T1 without the need for additional dedicated comms link.

Note: Photo shown with optional modules installed (sold separately).

APT WorldNet Oslo Features:
• Available audio bandwidths from 10Hz right through to 22.5Hz for FM and HD Radio/DAB applications
• Analog and AES/EBU I/O (AES3) Audio
• Low-delay, cascade-resilient Enhanced apt-X coding as standard
• Optional coding & companding options including MPEG Layer 2, J.57 and J.41
• DSP-based architecture for 24/7/365 operation
• Redundant power supplies with power condition detector and back-up switch
• Automatic switching to secondary transport link and/or spare audio card with automatic restore on user-defined conditions, rules and presets
• Independent Master Controller Card safeguards configuration
• Over 15 different plug-in audio modules including analog, digital, duplex, encoder, decoder, and 5.1 phase-locked options
• Up to 4 channels per audio module and up to 6 audio modules per frame
• From 2 duplex channels to 24 simplex channels in a single frame
• Wide selection of transport modules including T1, E1 and Ethernet/IP
• Codec Management System Software enables extensive monitoring ability and intuitive control over network, equipment and variables