[asterisk-dev] Support for Dialogic DM3 cards

[Steve Underwood]

Wai Wu wrote:

>---- i could comment on 'whats *loose* around here' but, there is no  reason too.
>
>---- either you believe in asterisk and  what it can do for you.  (or you don't)
>
>---- if you are the latter, i'd suggest you leave before others sense your
>---- lack of commitment.
>
>---- god forbid, you are a dialogic mole <G>.
>
>
>Gee, you guys sound like a cult. LoL. 
>  
>
I think that guy sounds more like a cretin.

>Seriously, I am looking for ways to better integrate Dialogic/Aculab cards with Asterisk. The way it is done right now is very wasteful on the hardware (two speech resources per channel) when routing calls from PSTN to, say, IAX trunks. When I know more about the * source code, there might opportunity for a solution to this. 
>  
>
The problem lies with the hardware, at least for Dialogic. There are
Aculab drivers for *, but I don't know much about the Aculab cards. I do
know quite a lot about the Dialogic cards, and they are very limiting.
Most of the voice resources, and all the older one, are half-duplex. You
can only do VoIP calls with a pairs of these resources. Even then, the
performance sucks. Dialogic use huge amounts of buffering. This is great
for IVR applications, as it makes the software timing very relaxed. For
VoIP it makes the latency awful. There is a good reason why Dialogic
built a completely separate line of cards for VoIP - the IVR + H.100 bus
voice oriented cards really don't cut it.

Regards,
Steve