APT WorldNet Oslo IP Audio Codec

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The ultimate audio channel controller that, with 14 channels, allows you to transfer your audio files to the other side of the room, across the street or to the office in New York

Modular, Multiple Channel Audio Multiplexer
Designed for STLs and Inter-Studio Networking
Audio over E1, T1 or IP
Enhanced apt-X, J.57 or Linear audio
Up to 4 audio channels per card
Up to 7 audio cards
Analog and AES/EBU audio interfaces
5.1 Phase-Locking for seamless surround sound
All cards hot-swappable
Redundant Power Supplies
In-band Management over E1/T1 link
Powerful Codec Management System software for full control and supervision

The jewel in the crown of APT’s broadcast audio codecs, 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 28 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.

WorldNet Oslo Crate and PSU (AC)	3U, 19” Rackmount enclosure with 120 - 240V AC Power Supply Unit	51.100.110.01
WorldNet Oslo Crate and PSU (DC)	3U, 19” Rackmount enclosure with –48V DC Power Supply Unit	51.100.120.01
MCU and GUI	Micro Controller Unit for set up and configuration of parameters of all individual cards. Intuitive graphical user interface to control and monitor MCU module (including indicative Level Meters) and log events via PC.	51.200.100.01
E1 Transport card (RJ45), X.21 data interface	2Mbit/s synchronous RJ45 (120 Ohm) for primary and secondary link or back up. X.21 interface to carry synchronous data embedded in the link.	51.300.100.01
E1 Transport card (BNC) - No X.21 interface	2Mbit/s synchronous BNC interface (75 Ohm) for primary and secondary link or back up - no X.21 interface.	51.300.200.01
T1 Transport Card (RJ45), X.21 data interface	1.5Mbit/s synchronous RJ45 (120 Ohm) for primary and secondary link or back up. X.21 interface to carry synchronous data embedded in link.	51.310.100.01
IP-Audio Transport card	100BaseT, supports 128 x 64kBit/s timeslots, 24 IP routes, QOS, RTP over UDP.	51.400.100.01
2 Ch. Duplex Analog Audio Card, Z = Hi/Lo, apt-X	2 channel Input and Output supporting Analog XLRs, Hi/Lo impedance. Audio band from 3.5kHz to 22.5kHz. Channels are discrete: stereo/dual-mono, Enhanced apt-X 16/24Bit	51.700.200.01
Thin 2 Ch. Duplex Analog Audio Card, Z = Hi/Lo, apt-X - for slot 7	2 channel Input and Output supporting Analog D-type 15way female I/Os, Hi/Lo impedance. Audio band from 3,5kHz to 22,5kHz. Channels are discrete: stereo/dual.mono, Enhanced apt-X 16/24 Bit	51.700.201.01
2 Ch. Duplex Analog Audio Card, Z = 600/600 Ohms, apt-X	2 channel Input and Output supporting Analog XLRs, 600/600 Ohms impedance. Audio band from 3.5kHz to 22.5kHz. Channels are discrete: stereo/dual-mono, Enhanced apt-X 16/24 Bit	51.700.210.01
Thin 2 Ch. Duplex Analog Audio Card, Z = 600/600 Ohms, apt-X - for slot 7	2 channel Input and Output supporting Analog D-type 15way female I/Os, 600/600 Ohms impedance. Audio band from 3,5kHz to 22,5kHz. Channels are descrete: stereo/dual-mono, Enhanced apt-X 16/24 Bit	51.700.211.01
2 Ch. Duplex Digital Audio Card, AES/EBU, Z =110, apt-X	2 channel AES/EBU Input and Output supporting XLRs. Ext. Reference Clock input (AES-11). Supports output Sample Rates of 32, 44.1 and 48kHz, Enhanced apt-X 16/24 Bit	51.800.200.01
Thin 2 Ch. Duplex Digital Audio Card, AES/EBU, Z =110 Ohms, apt-X - for slot 7	2 channel AES/EBU Input and Output supporting D-type 15way female I/Os. Ext. Reference Clock input (AES-11). Supports output sample rates of 32, 44.1 and 48kHz, Enhanced apt-X 16/24 Bit	51.800.201.01
4 Channel Simplex Analog Audio Input Card, Z = Hi, apt-X	4 channel Input supporting Analog XLRs, Hi (>10k Ohms) impedance. Audio band from 3.5kHz to 22.5kHz. Channels are discrete: dual-stereo, quad-mono, Enhanced apt-X 16/24 Bit	51.710.400.01
4 Channel Simplex Analog Audio Input Card, Z = 600 Ohms, apt-X	4 channel Input supporting Analog XLRs, 600 Ohms impedance. Audio band from 3.5kHz to 22.5kHz. Channels are discrete: dual-stereo, quad-mono, Enhanced apt-X 16/24 Bit	51.710.410.01
4 Channel Simplex Analog Audio Output Card, Z = Lo, apt-X	4 channel Output support Analog XLRs, Lo (<50 Ohms) impedance. Audio band from 3.5kHz to 22.5kHz. Channels are discrete: dual-stereo, quad-mono, Enhanced apt-X 16/24Bit	51.720.400.01
4 Channel Simplex Analog Audio Output Card, Z = 600 Ohms, apt-X	4 channel Output support Analog XLRs, 600 Ohms impedance. Audio band from 3.5kHz to 22.5kHz. Channels are discrete: dual-stereo, quad-mono, Enhanced apt-X 16/24Bit	51.720.410.01
4 Channel Simplex Digital Audio Input Card, Z = 110 Ohms, apt-X	4 channel AES/EBU Input supporting XLRs. Ext. Reference Clock input (AES-11). Input sample rate conversion, Enhanced apt-X 16/24 Bit	51.810.400.01
4 Channel Simplex Digital Audio Output Card, Z = 110 Ohms, apt-X	4 channel AES/EBU Output supporting XLRs. Ext. Reference Clock input (AES-11). Supports output Sample Rates of 32, 44.1 and 48kHz, Enhanced apt-X 16/24 Bit	51.820.400.01
2 Channel duplex, dual Analog and Digital Inputs. Hi/110 Ohms	2 channel AES/EBU digital I/O duplex card with 2 channel Analog encoder Inputs (Hi impedance) for digital source back up supporting XLRs. Ext. Reference Clock input (AES-11). Input/output sample rate conversion, Enhanced apt-X 16/24 Bit	51.800.710.01
2 Channel duplex, dual Analog and Digital Inputs Z = 600/110 Ohms, apt-X	2 channel AES/EBU digital I/O duplex card with 2 channel Analog encoder Inputs (600 Ohms impedance) for digital source back up supporting XLRs. Ext. Reference Clock input (AES-11). Input/output sample rate convertion, Enhanced apt-X 16/24 Bit	51.800.711.01
Package: 5.1 / 6.1 / 7.1 Phase Coherent - Simplex Input, Z = 110 Ohms, apt-X	2 x 4 Channel Simplex Digital Audio cards, AES/EBU Input with phase synchronisation over 8 channels. (Requires specific GUI to activate phase synchronisation)	51.900.200.10
Package: 5.1 / 6.1 / 7.1 Phase Coherent - Simplex Output, Z = 110 Ohms, apt-X	2 x 4 Channel Simplex Digital Audio cards, AES/EBU Output with phase synchronization over 8 channels.	51.900.200.20
Package: 5.1 Phase Coherent - Duplex, Z = 110 Ohms, apt-X	3 x 2 Channel Duplex Digital Audio cards, AES/EBU Input with phase synchronization over 6 channels.	51.900.100.10
Auxiliary Data Card Build 1, 5x RS232 and 2x 4 relays	5 x Aux Data Ports with RS232 at speed from 1200 baud up to 9600 baud and 8 x Contact Closures.	51.600.100.01
Auxiliary Data Card Build 2, 10x RS232	10 x Auxiliary Data Ports with RS232 at speed from 1200 baud up to 9600 baud	51.600.200.01
Auxiliary Data Card Build 2, 10x RS422	10 x Auxiliary Data Ports with RS422 at speed from 1200 baud up to 9600 baud	51.600.210.01
Redundant PSU (AC)	Back up 120 - 240 V AC power supply with automatic fall over in the event of primary PSU failure	51.110.100.01
Redundant PSU (DC)	Back up -48V DC power supply with automatic fall over in the event of primary PSU failure	51.120.100.01
IP Ethernet Bridge Module, extern: X.21 to IP	X.21 to IP converter, interfaces to E1/T1 card enabling WAN connectivity. Auto negotiation with X.21 data rate, no external PSU required.	51.999.100.11
Aux Data Cable, 5 x RS232	Aux Data cable, 1x 15 way D-Type male terminating in 5 x 9 way D female connectors, 1 meter in length	51.999.600.10
Air cooling Fan Tray 19" 1U	19", 1U fan ventilation	51.999.100.10
Blank Panel (Small)	Blanking panel for Front and Back panel	51.100.901.01
Blank Panel (Large)	Blanking panel for Front and Back panel	51.100.902.01

APT Guide to IP audio
A handy guide to Audio over IP, designed for system planners and specifiers.
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