[Asterisk-Users] PowerEdge 17500 with TDM400P - 4 FXO -- NMI, loud noise when dialing out

[Andrei (MPI)]

Hello All,

Please let me know if you have any comments or suggestions how to 
resolve the following situation. My configuration is:
- Dell PowerEdge 1750 (standard), one CPU Xeon 3.0GHz
- TDM400P with 4 FXO, connected to 4 regular phone lines (PSTN)
- Asterisk 1.0.0 from cvs
- Zaptel and Zapata latest from cvs
- Debian 3.0 Woodoo / compiled kernel 2.4.27

Initially Asterisk works fine for a few hours, hard and soft phones are 
able to dial out and receive calls from outside. In about 6-8 hours, 
when I would try to dial out  from any extension through Zap/1 ... Zap/4 
(I have group #1 defined) I would hear continuous loud noise for 20 
seconds - then silence. Call stays connected but apparently TDM400P is 
not even picks up the line to dial. No sounds could be heard after that. 
Repeat dials for any number of times - same thing.

What would fix this: either restart of the whole server or shutdown 
asterisk, then rmmod wctdm; rmmod zaptel; modprobe wctdm. Though, in a 
few hours after modules are restarted I have the same situation - loud 
noise on dial out and no rings detected on inbound calls.

BTW, when on wctdm module load NMI would always occur, though the server 
and card works fine after that:

Module 0: Installed -- AUTO FXO (FCC mode)                     
Uhhuh. NMI received. Dazed and confused, but trying to continue
You probably have a hardware problem with your RAM chips       
Module 1: Installed -- AUTO FXO (FCC mode)                     
Module 2: Installed -- AUTO FXO (FCC mode)                     
Module 3: Installed -- AUTO FXO (FCC mode)                     
Found a Wildcard TDM: Wildcard TDM400P REV E/F (4 modules)     
Registered tone zone 0 (United States / North America)         
Registered tone zone 0 (United States / North America)         

Here is some more information about the server:

# cat /proc/interrupts         
           CPU0       CPU1                           
  0:     781301          0    IO-APIC-edge  timer    
  1:          6          0    IO-APIC-edge  keyboard 
  2:          0          0          XT-PIC  cascade  
 15:          5          0    IO-APIC-edge  ide1     
 16:     311577          0   IO-APIC-level  eth0     
 17:      86308          0   IO-APIC-level  eth1     
 18:      11391          0   IO-APIC-level  megaraid 
 20:    7797642          0   IO-APIC-level  wctdm    
NMI:          1          0                           
LOC:     781160     781115                           
ERR:          0                                      
MIS:          0                                      

So it is not interrupts problem. Tried to move Digium card in a 
different PCI slot (#2 now) and changing IRQ in Bios, loaded the kernel 
with pci=noacpi, and nothing would help.

# lspci                                                                  
00:00.0 Host bridge: ServerWorks: Unknown device 0014 (rev 
33)                 
00:00.1 Host bridge: ServerWorks: Unknown device 
0014                          
00:00.2 Host bridge: ServerWorks: Unknown device 
0014                          
00:0e.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 
27)       
00:0f.0 Host bridge: ServerWorks CSB5 South Bridge (rev 
93)                    
00:0f.1 IDE interface: ServerWorks CSB5 IDE Controller (rev 
93)                
00:0f.2 USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 
05)     
00:0f.3 ISA bridge: ServerWorks: Unknown device 
0225                           
00:10.0 Host bridge: ServerWorks: Unknown device 0110 (rev 
12)                 
00:10.2 Host bridge: ServerWorks: Unknown device 0110 (rev 
12)                 
00:11.0 Host bridge: ServerWorks: Unknown device 0101 (rev 
05)                 
00:11.2 Host bridge: ServerWorks: Unknown device 0101 (rev 
05)                 
01:04.0 Network controller: Tiger Jet Network Inc. Model 300 
128k              
02:00.0 Ethernet controller: BROADCOM Corporation: Unknown device 1648 
(rev 02)
02:00.1 Ethernet controller: BROADCOM Corporation: Unknown device 1648 
(rev 02)
04:03.0 RAID bus controller: Dell Computer Corporation: Unknown device 
000f (rev 
02)                                                                            


Please help! I would appreciate any comments or suggestions. zaptel.conf 
and zapata.conf are standard taken from samples on voip-info.org for 
card with 4 FXOs.

Sincerely,
Andrei