How many simultaneous "sound" channels could the * system operate in a dual T400P. Is this dependant on the sound card and its' drivers? Would one require a higher CPU spec? (From my understanding, onboard sound cards can also increase CPU load whereas dedicated sound cards like Live/Audilogy take most of the load.)
----- Original Message ----- From: "Mark Spencer" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, May 28, 2003 2:38 PM Subject: Re: [Asterisk-Users] 2 4-port T1 cards > > 3. Dual MB won't help much in pure telephony. > > In pure telephony, you are basically dealing with serial line > > IO. A T1 is little more than I long distance serial line. 8 T1s > > is just 11.7megs per second each way, or 23.4 megs in and out. > > Not too much for a good machine to do. Granted, if you are doing VoIP > > then you add another set of ins and outs with compression in the middle > > of it too. This is where the second CPU comes in handy. > > Actually, with Zaptel, and the T400P especially, dual CPU makes a *big* > difference. The T400P and E400P are slave-only designs, so the CPU spends > a lot of time just cramming I/O down the PCI bus. Having a second CPU > free to do work will definitely help. > > > 4. AGP Video. > > Make sure not to use the frame buffer, it has been reported that the > > frame buffer generates large amounts of interupts and will > > degrade the performance. > > Don't underestimate this effect or think that a fast CPU will get around > it. frame buffer is a definite no-no because it disables interrupts > during screen redraws which take an enormous amount of time. If your call > quality drops while you're playing quake on your PBX, don't come crying to > us ;-) > > Mark > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
