Trixbox 2.8.0.3 + A800P

A800P + Trixbox 2.8.0.4

I've got Trixbox 2.8.0.3 with a A800P (8 x FXS) connected to 8 POTS provided by the cable company (Analog Lines provisioned from the Cable Service). There are 21 phones (5 GXP2000 & 16 IP301 Phones) and the server is a Dell PowerEdge 850. My polycom phones (IP301) drop outgoing audio when 2 or more calls are active. The call does not drop just the outgoing audio. There are no firewalls / routers between the Trixbox and the phones. All internal conversations work fine (ext to ext) even with all 8 lines busy. So the problem is would not seem to be a network traffic issue.

dahdi_tool does not see the A800P
dahdi_monitor works
dahdi_tests works (100 Best Worst 99.994 Avg 99.9989)
cat /proc/dahdi/1 shows all 8 ports and their current status
Status of trunks in FOP does not work

Any help would be greatly appreciated.

Thanks

Error in DMESG:
Uhhuh. NMI received for unknown reason b1 on CPU 0.
You probably have a hardware problem with your RAM chips
Dazed and confused, but trying to continue

eth1: Tigon3 [partno(BCM95721) rev 4101 PHY(5750)] (PCI Express) 10/100/1000Base-T Ethernet 00:1c:23:e2:05:28
eth1: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[1] WireSpeed[1] TSOcap[1]
eth1: dma_rwctrl[76180000] dma_mask[64-bit]
EDAC MC0: Giving out device to i3000_edac i3000: DEV 0000:00:00.0
dahdi: Telephony Interface Registered on major 196
dahdi: Version: 2.2.0
ACPI: PCI Interrupt 0000:03:02.0[A] -> GSI 35 (level, low) -> IRQ 66
OpenVox A800P version: 1.4
OpenVox A800P passed register test
Module 0: Installed -- AUTO FXO (FCC mode)
Module 1: Installed -- AUTO FXO (FCC mode)
Module 2: Installed -- AUTO FXO (FCC mode)
Module 3: Installed -- AUTO FXO (FCC mode)
Module 4: Installed -- AUTO FXO (FCC mode)
Module 5: Installed -- AUTO FXO (FCC mode)
Module 6: Installed -- AUTO FXO (FCC mode)
Module 7: Installed -- AUTO FXO (FCC mode)
Found aa OpenVox A800P: Version 1.4 (8 modules)
ACPI: Unable to derive IRQ for device 0000:00:1f.3
ACPI: PCI Interrupt 0000:00:1f.3: no GSI
buffer sync misseed!
buffer re-sync occur from -1 to 3
sd 0:0:0:0: Attached scsi generic sg0 type 0
Uhhuh. NMI received for unknown reason b1 on CPU 0.
You probably have a hardware problem with your RAM chips
Dazed and confused, but trying to continue
floppy0: no floppy controllers found
Floppy drive(s): fd0 is 1.44M
floppy0: no floppy controllers found
lp: driver loaded but no devices found
ACPI: Power Button (FF) [PWRF]
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
device-mapper: multipath: version 1.0.5 loaded
EXT3 FS on sda2, internal journal
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
Adding 779144k swap on /dev/sda3. Priority:-1 extents:1 across:779144k
IA-32 Microcode Update Driver: v1.14a
microcode: CPU1 updated from revision 0x56 to 0x5a, date = 09262007
microcode: CPU0 updated from revision 0x56 to 0x5a, date = 09262007
tg3: eth0: Link is up at 100 Mbps, half duplex.
tg3: eth0: Flow control is off for TX and off for RX.
dahdi_transcode: Loaded.
INFO-xpp: revision trunk-r6963 MAX_XPDS=64 (8*
INFO-xpp: FEATURE: without BRISTUFF support
INFO-xpp: FEATURE: with PROTOCOL_DEBUG
INFO-xpp: FEATURE: with sync_tick() from DAHDI
INFO-xpp_usb: revision trunk-r6963
usbcore: registered new driver xpp_usb
dahdi: Registered tone zone 0 (United States / North America)
dahdi_echocan_mg2: Registered echo canceler 'MG2'
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IPv6 over IPv4 tunneling driver
eth0: no IPv6 routers present
Bluetooth: Core ver 2.10
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized

Performed a Yum update trixbox (now on 2.8.0.4) issues still present.

Any help would be greatly appreciated.

Thanks

hello:
please check with this:
Uhhuh. NMI received for unknown reason b1 on CPU 0.
. it should be a problem.
please change the hardware platform.