Specifications

Engineering Guidelines

MXe Controller 192 Gateway limitations

The MXe Controller has been shipped in two different versions since it was introduced (MXe and

MXe II). In MCD 4.2 a third version, the MXe III, is released. The original version has four AD21262

DSP devices on the main board, and the later MXe II has four AD21363 DSP devices. Both have

the same processor modules, but the MXe III has new processor modules with a faster processor

and DDR2 memory and SATA drives, along with the DSP devices from the MXe II.

The MXe II Controller can be configured as a 192 channel TDM gateway, as shown in the table

called MXe, MXe Server, and 192 Channel PSTN Gateway DSP Resources of the Technician's

Handbook. Although not shown in this table, it is possible to upgrade the original MXe Controller

to a 192 Gateway, but with some limitations since it does not have as much DSP resource

available. The original MXe Controller can only be used as a 192 Gateway when a second VEC

module is installed. The two options shown for the MXe II that do not have the second VEC

cannot be used, because they will not have enough DSP resources to function properly. The

MXe III Controller maintains the same configurations as the MXe II Controller, but the increased

processing power allows higher traffic rates and more features to be supported, although the

same DSP/EC limitations remain.

Note: The MXe III has an improved processor card in both positions (533 MHz CPU

with DDR2 memory). This does not increase any of the allowed maximum values on the

controller, but does permit more features to be combined at higher performance levels.

Refer to the System Engineering Tool for detailed performance evaluations on this (or

any other) controller.