Digium il 24 Gennaio socorso aveva annunciato assieme ai nuovi prodotti,
l’introduzione di una nuova tecnologia chiamata VoiceBus nei propri chip, cosi descritta da Bill Miller:

“Digium’s VoiceBus technology enables the development of high performance PCI compatible telephony interface cards for a variety of applications,”

“Moving forward, this architecture will be used across all Digium analog and digital telephony solutions.“

Questo nuova tecnologia dovrebbe migliorare cosi come descrittola qualita’ audio, ma non e’ finita qui perche Shaun Ruffell in dev il 29 Febbraio scorso ha postato questo messaggio:
This is a request for testing for users of Asterisk 1.4 or 1.6 with any
of the following Digium VoiceBus based cards: TDM2400P, AEX2400, AEX800,
TDM800P, TDM410, TE120P, TE121, and/or TE122.

“From a practical standpoint, this branch should allow these boards to
work in more systems / configurations where IRQ misses caused problems
in the past.

The updated wctdm24xxp and wcte12xp drivers are based on Zaptel 1.4 and
work by dynamically increasing the latency they add to the data stream
in 1ms increments until it does not detect any additional IRQ misses.
For example, if your TDM800P card was sharing an interrupt with your
disk controller and you were experiencing problems, this new driver
could, at the cost of a few extra milliseconds of latency, allow the two
boards to peacefully coexist on the same IRQ.

Please feel free to checkout the code on any test servers you may have
and let me know any results. Both the good and the bad are welcome.

To get the code:
svn co http://svn.digium.com/svn/zaptel/team/sruffell/voicebus

Cosi tra le nuove schede e questo nuovo driver in grado non solo di sfruttarle a pieno il miglioramento dovrebbe essere sostanziale

Si noti che l’efficacia di questo driver dovrebbe offrire poco alle schede PCI Express che non soffrono del problema descritto.