I hate to ask the obvious.... But what's your power quality like? Is the system on a UPS?
UPS supplied power makes a huge difference in system stability. I wouldn't run a server for anything (including testing) without it. Second, what class of hardware? You do get what you pay for and "flakiness" can often be traced to power issues. >From what I can tell the Digium hardware does some signal processing magic by relying heavily on system power and cpu power. The first clue here is the 12v plug to provide dial tone/ring to your ATAs. BTW, Ring on a analog phone is typically 90vAC. Dial tone is @48V. So if you put a bunch of analog devices in you are begging for headaches. I learned those numbers after being shocked. I don't strip phone wire with my teeth anymore. Shame on me for being lazy. I'm a firm believer in not running production systems on bargain hardware. I had nothing but grief out of my desktop class and generic trash systems. And yes, Shuttle is generic trash, as is ASUS, and A Open and a host of other Taiwan Special stuff. The way you save money in those systems is by making thinner PCB's which will drive you insane trying to troubleshoot. One tweak of your case and you can "lose" some contacts. At any rate, judge a circuit by it's thickness. Trash is like paper and flexes. Quality is thick and will cut you before it bends. I'm running older, but solid hardware and not seeing any issues. I'm using a Compaq Proliant 1850R Gen1 dual PII 400 with 512MB ram, GB ethernet, and SATA Hardware RAID. Cheap, efficient, redundant. And for a Debian box, good enough. Initial testing with TOP shows that one ATA to VOIP connection costs 4% of CPU to start up and then 2% to carry. Considering we have 10 handsets and 10 employees with 4 lines and normally no more then 2 people on the POTS lines.... I think we're in good shape. If you're planning to run a E*trade call center, you may want more substantial hardware. If you are planning the Mom&Pop Voicematrix @Home you may be just fine with a old Proliant. They have redundant power supplies and they are cheap and indestructible. Although it's a bit loud to keep in the bedroom. :) Don't get me wrong, I'm not trashing your hardware. If you can run cheap bargain hardware and get it to work great. But my experience has been that I lost my A** on generic knockoff stuff when I sold PC's for a living. I spent a lot of time chasing errors that I never could find the cause of. Granted my webservers run Windows... And this is a linux app... But I see uptime in the range of months with Proliant hardware. That *is* remarkable for MSFT products. Anyhow that's my two cents..... I wonder if there is a correlation between hardware class and issues with TDM boards? Brian Greul Texas Shirt Company www.txshirts.com 713-802-0369 / 713-861-6261 (fax) -----Original Message----- From: Michael Welter [mailto:[EMAIL PROTECTED] Sent: Saturday, January 01, 2005 5:15 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Qs about FXO/FXS cards [EMAIL PROTECTED] wrote: > What exactly are people seeing when they have "issues" with their TDM > card? > > > Brian Greul > Texas Shirt Company > www.txshirts.com > 713-802-0369 / 713-861-6261 (fax) Since you asked, and since I'm well into this bottle of Merlot on New Year's day: 1. Power alarms. WTF does that mean? Wish I had some support docs. 2. On bootup, "Excessive leakage module x, ProSLIC failed Auto Configuration". Again, WTF? Reboot and it's ok. But, just a reboot after driving 100+ miles to the client site is not a good option. 3. On bootup, a LED won't light. When zapata gets to it, it can't find the channel. Usually means a complete power cycle to get it to work. 4. A TDM card that isn't recognized at all. DOA. 5. Impedience matching to eliminate hummmmmmmmmm? I'm calling Matt on Monday, and hopefully he'll RMA these cards. I hope that everyone that has a life is out enjoying the New Year. Cheers, Mike -- Michael Welter Introspect Telephony Corp. Denver, Colorado US +1.303.674.2575 [EMAIL PROTECTED] www.introspect.com _______________________________________________ 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 _______________________________________________ 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
