DT99 - 2 Mbps audio codec
The DT99 - COMBIMUX is a universal system for the transmission of audio and data signals via 2 Mbps. It is ideally suited for contribution and distribution networks. Its 19” cabinet holds several I/O modules that can be configured by jumpers and by software to operate in several ITU-T and ISO/MPEG audio coding modes. COMBIMUX does also perform the Drop & Insert functions. The equipment is configured by a PC using the COMBISOFT program that selects the coding procedure, allocates the time slots to the various audio signals and monitors the operational state. The COMBIMAP software monitors and controls complete networks.
COMBIMUX offers the shortest processing time: In J.41 mode only 3.6 milliseconds for a complete point to point transmission from the analogue audio input through the 2 Mbps interfaces to the analogue audio output.
Depending on the type and quantity of the signals to be transmitted, Mandozzi Elettronica SA offers two versions of COMBIMUX: COMBIMUX DT 88 is built into a 19” cabinet of two height units (h x w x d = 87.5 x 485 x 260 mm) that can be equipped with two input/output modules. The power supply module (non redundant), the central processor and the 2 Mbps module are integrated into the cabinet.
COMBIMUX DT99 is built into a 19” cabinet of four height units (h x w x d = 177 x 485 x 300 mm) that can be equipped with the following modules:
1 CPU or SNMPU
1 E1 or E1Q (2 Mbps interface module)
1 or 2 power supply units: At least one is always needed, two for redundant supply
The BGT cabinet offers the space for up to six I/O modules The BGTE cabinet offers the space for up to ten I/O modules. The space for the additional I/O slots was gained by installing the two power supply units in an additional 19” cabinet of 4 HU, called BGTP. This cabinet has space for six power supply units that are feeding three COMBIMUX cabinets redundantly, resp. six cabinets non redundantly.
Mono-directional or bi-directional transmission of audio signals and data (serial and parallel data) on 2 Mbps channels
Analogue and/or digital (AES/EBU) audio interfaces
The digital interfaces are equipped with sampling rate converters
Transmission of IP signals over the 2 Mbps channel
Automatic IP back up connection in case of 2 Mbps failures
Several equipment can be cascaded (e.g. in order to increase the number of audio interfaces)
Drop & Insert functions
E1Q modules with four E1 interfaces and integrated 240 x 240 time slot switch allow complex network structures to be realised
Comfortable configuration and monitoring functions by means of laptops with user friendly control surfaces
Remote configuration of any number of COMBIMUX equipment via IP
Remote monitoring of any number of COMBIMUX equipment via SNMP
Remote monitoring and configuration of complete networks by means of the COMBIMAP software
The equipment is especially designed to operate in severe electromagnetic environments
Due to the interchangeability of the I/O modules, the possibility to configure them by software
or jumpers and to equip them with customer specified connectors, COMBIMUX satisfies the most
Redundant or non redundant 230 VAC or 48 … 60 VDC power supply, or mixed AC/DC
All modules can be replaced under power