DT99 2 Mbps audio codec

Overview

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.