> I know, I know, check the archives but I can't find an answer since the > new cards are well, NEW! > > I understand the whole issue of expandability and flexibility of using a > T1 card and an Adtran 750. FXO or FXS, you mix and match. > > With the new card offerings from Digium I can easily put a 4CO by 8 > Station system together. > > Barring the extra interrupts, extra CPU Cycles of extra interfaces, is > there a reason why I would not do this?? > > How much overhead would the 4 port cards put on a system?? At what point > would the breakeven point be?? > > The cost of the T1 card is not the problem, the cost of a channel bank, > New, no-ebay, or used stuff here. I want to compare new apples to new > apples, not used.
The new TDM04B card (old card with new daughter boards) technical specs seem to be somewhat of an unpublished thing. System with two x100p's and one TDM04B shows: [EMAIL PROTECTED] cat /proc/interrupts CPU0 0: 9953447 XT-PIC timer 1: 253 XT-PIC keyboard 2: 0 XT-PIC cascade 3: 0 XT-PIC usb-uhci 8: 1 XT-PIC rtc 9: 204875095 XT-PIC ehci-hcd, eth0, Intel ICH4, wcfxo, wctdm 10: 0 XT-PIC usb-uhci 11: 99034988 XT-PIC usb-uhci, wcfxo 12: 3451 XT-PIC PS/2 Mouse 14: 156855 XT-PIC ide0 15: 787553 XT-PIC ide1 NMI: 0 ERR: 0 [EMAIL PROTECTED] Don't see any interrupts associated with the wcfxs card. (Oh, I was told by digium support the software routines for the FXO daughter boards are in the wcfxs module. Looking at the file dates, that appears to be correct. But, no interrupts. Cool!) Don't have a clue what the limitations might be at this time, however it would appear: a. echo issues with the FXO card are identical (if not worse) then the x100p's. Looks/feels like the x100p prior to about Nov 2003. Thirty seconds of decreasing echo after anwser. b. the FXO card spontanously thinks the pstn line is ringing, and executes the dialplan entry assoicated with that. Rings twice and then disappears. (Note: callprogress=no/yes has absolutely no impact, as though it was not implemented on the FXO card.) c. CallerID seems to be a less reliable then the x100p. Nothing to back that up other then gut feeling. d. transmission levels are good and adjustable via rxgain/txgain, but has little impact on the stock echo problem from what I've seen thus far. Based on informal comments, I'd have to guess the software necessary to support the real FXO hardware needs are lagging by a fair amount. Still testing though... Rich _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users