You've got a decent server. Generally the limiting factor for the number of simultaneous calls is more about server memory. That server could likely handle 124 simultaneous calls, but you would be prudent to double that memory size. Make sure you are running at 100 full especially if you are using G.711. 10 Full uplinks won't cut it if you are running that kind of bandwidth. As for the DSP, you are right to be concerned about the Digium cards, but not because of the DSP. The DSP is not where you will run into problems. Digium cards feature 2 year old circuitry and do not play well with other devices. You have to take care not to share interrupts with any components that may be active on that system. Sharing an IRQ between a Digum card and an Ethernet card would certainly spell disaster in my experience. >From personal experience, I no longer use Digium hardware since I could rarely push a quad port card to more than 13 channels per T1 circuit without the card failing miserably. HDLC aborts abound. For now, I only use Sangoma cards. These don't have the IRQ issues and I have had no problems pushing their cards to their maximum. I recommend echo canceller enabled cards for any T1/E1's you may use that are not long distance carrier lines. Good luck, hope this helps with your capacity planning. - SG ############################################## 2007/3/24, A. Levy <[EMAIL PROTECTED]>: Hello. I have a TE405P Digium Card (4 E1's) with ISDN protocol and I need to find out if there is any limitation about DSP capabilities, I mean, I am not sure how many phone calls my Digium card supports, simultaneously. The calling flow goes from IAX <-> ISDN. I am running this card into CPU like this: - Micro PIV 3.0 - 1Gbyte Memory Thanks. Levy.-
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