High Density Ultra Low Power HD Audo Gateway/IVR using Diva System Release 9.6

Diva system release 9.6 offers new feature: diva streaming.
While this feature is hidden inside of the product core and use of this feature is nothing what requires and user/application actions the major effects from introduction of this feature are:

High reduction of host load
Low delay and delay variance of voice stream

Diva streaming is new media transport protocol. It is responsible for transfer of data between user application and Diva media processing resource. Diva streaming allows transport of data without host intervention and without overhead of system calls.
BUS Master DMA of Diva hardware performs direct transport of data between chan_capi and Diva media processing resources.

Provided reduction of host load allows to use smaller CPU and to reduce required power, space and price of the system. Moreover this is possible to create one passive cooled and free of maintenance system:

Dual core 1.2 or 1.6GHz Atom with 2 ... 4 GByte memory and 32Bit Ubuntu 10.04 LTS, updated to backport kernel with SSD support.
SSD or SD card with 4 ... 32 Gbyte as solid state disk.
Diva 4PRI PCIe HS (Half Size) or Diva 8PRI PCIe FS (Full Size) hardware.
Asterisk 1.8 compiled from sources.

In the test we used:
Dual core 1.6GHz Atom, 4GByte SD card, passive cooled, Diva 4PRI PCIe HS.

This results in one VoIP (SIP) Gateway with power usage of 40 WT and complete free of maintenance.

The space can be saved by use of PCIe connector cable. PCIe BUS allows to use cable as extension. This allows better place,ent of Diva hardware and as result smaller unit size.

The test shows that this is no problem to double channel density up to 240 channels.
This can be done by use of Diva 8PRI PCIe FS (Full Size) hardware.