APT WorldNet Oslo
Space efficient, modular, Telco grade solution for applications where several channels of broadcast quality audio are carried over an IP or E1 connection. One 3U frame will house up to 6 payload codec cards - each having Analogue or Digital audio interfaces. Each frame can have its own dual redundant power supplies for reliability. For E1 time slots can be configured for IP traffic for LAN/WAN extension for In-Band remote control and monitoring or as an X.21 circuit extension over the E1 link. IP connectivity has the flexibility of up to 24 different routes as a mixture of multicast and/or unicast per IP transport card, each crate can have 2 Dual port IP transport cards.
With simplex (uni-directional) cards, up to 24 channels of audio can be transported. WorldNet Oslo provides Phase Coherent Discrete Multi Channel Audio, for example 5.1 or 7.1 surround sound, for cards in slots 1-3 as well as multiple stereo channel audio using the remaining 3 payload slots. Other cards include a 4 channel duplex Voice Comms card (4 wire), Auxillary data (RS232) as well as contact closures.
User configuration is via IP using a supplied PC remote configuration GUI application, the APT Codec Management System alowing control of up to 7 different codecs in the APT WorldCast range, further flexibility and ability to control a greater numbers of client codecs is possible with APT WorldCast's Network Management System.
Fixed broadcast contribution (multi-channel audio in the same frame)
Live event audio transmission over IP/ Sat/cable networks or terrestrial
Fixed audio link from sport arenas to broadcast center
Surround Sound audio distribution and monitoring
Multi purpose distribution via a single IP data stream
Multicast distribution/multiple unicast, using RTP/UDP and IGMP
Redundancy on the WorldNet Oslo
Designed for mission-critical broadcast applications, the WorldNet Oslo offers a suite of back-up and redundancy options to protect against system failures and keep your station on air 24/7/365.
1) Hot Swappable Cards
Based on a modular architecture, all WorldNet Oslo modules are "hot swappable" and can be changed without causing a glitch on any of the audio channels or affecting them in any way. Once the system is configured, it is able to continue to operate in the event of an MCU card failure as other cards in the frame will each hold their local settings. The MCU can then be "hot swapped" and will recover the current system settings from the other cards, with no disruption to payload traffic. This prevents system down time and ensures that there is no single point of failure on the WorldNet Oslo. Additional flexibility and system management is achieved by re-booting an Oslo crate with a different MCU card..in this instance the new configurations on the MCU card are read into the individual cards.
2) Line Back Up
Both the E1/T1 and IP transport modules have dual ports enabling automatic failover to a secondary line in the case of failure on the main link. WorldNet Oslo can then either automatically recover to the main line when stability has been achieved for a user-specified amount of time, or be manually recovered.
3) Transport Card Redundancy
With two transport slots on the WorldNet Oslo, a second transport card can be fitted for additional redundancy and main circuit protection, so with 2 transport cards and each card with 2 Line or circuit interfaces there is plenty of scope for card and line redundancy. In a cross-media configuration, this can also be used to bridge data from an IP network to a TDM line and vice versa.
4) PSU Redundancy
Provision is made for using dual redundant power supplies in each frame. The WorldNet Oslo provides a power condition detector and backup switch, the AC power supplies will share the load all the times while any redundant DC power supply is in hot standby. Any combination of AC/AC, DC/DC or AC/DC PSU types is possible.
5) MCU Preset System
A preset system within the MCU module will store and recall up to thirty different system configurations. The Preset System reads the configuration of all cards and all parameters as a snap shot of the entire WorldNet Oslo frame and stores it on the MCU memory. The MCU also allows a user to remote store (backup) the entire preset system on a PC hard drive. A Preset can be restored locally or can be applied to a remote WorldNet Oslo via an inband link.
6) Backup Monitor
An optional feature of the NMS, Network Management System, Backup Monitor is a highly sophisticated and customisable feature enabling a broadcaster to continually monitor the status of both transport and audio circuits across multiple WorldNet Oslos throughout a network. For each defined alarm condition, the user can specify a combination of rules and priorities that will trigger the reconfiguration of units and switching to an appropriate back-up scenario using the inbuilt preset system.
Product Features List:
- Up to six fully duplex Stereo CODECs in one crate
- Each supports as standard 16/24 bit Enhanced apt-X™ and 16,20 and 24 bit PCM
- Optional J.41, J57 and Mpeg I/II Layer 2
- Over 15 different plug-in audio module types
- SIP/SDP/RTP protocols supported for IP compatibility defined by N/ACIP workgroup within the EBU
- Dedicated Auxillary Data module if required
- Convenient front panel audio monitoring
- Up to 2 x Dual port IP Transport cards per crate
- Mixed IP and E1 transportation possible
- System Control Module - Hot swappable
- Dual redundant power supplies AC and/or DC
- Multi-Channel phase coherent 5.1 surround sound
- Comprehensive Alarm features
- Telco interface: E1-G703 on RJ45 or BNC. IP Ethernet on RJ45
- Management - Serial RS232, IP, PC GUI and SNMP
- Hot swapable audio cards and PSUs
Oslo Rear Example