dmesg with only one card in the box
--
Failed to initailize DAA, giving up...
wcfxo: probe of 0000:02:0c.0 failed with error -5

dmesg with both cards in the box (wich is how I had it when I compiled and installed zaptel drivers)
--
wcfxo: DAA mode is 'FCC'
Found a Wildcard FXO: Wildcard X100P
Registered tone zone 0 (United States / North America)


/etc/zaptel.conf
--
fxsks=1
defaultzone=us
loadzone=us


/sbin/ztcfg -vvvv with one card
--
Zaptel Version: SVN-trunk-r1659
Echo Canceller: MG2
Configuration
======================


Channel map:

Channel 01: FXS Kewlstart (Default) (Slaves: 01)

1 channels configured.

ZT_CHANCONFIG failed on channel 1: No such device or address (6)



/sbin/ztcfg -vvvv with both cards
--
Zaptel Version: SVN-trunk-r1659
Echo Canceller: MG2
Configuration
======================


Channel map:

Channel 01: FXS Kewlstart (Default) (Slaves: 01)
Channel 02: FXS Kewlstart (Default) (Slaves: 02)

2 channels configured.

ZT_CHANCONFIG failed on channel 2: No such device or address (6)


cat /proc/interrupts after modprobe ztdummy, zaptel, and wcfxo with one card
--           
           CPU0       
  0:     747462    IO-APIC-edge  timer
  1:        423    IO-APIC-edge  i8042
  7:          0    IO-APIC-edge  parport0
  8:    3049043    IO-APIC-edge  rtc
  9:          1   IO-APIC-level  acpi
 12:      20349    IO-APIC-edge  i8042
 14:       7863    IO-APIC-edge  ide0
 15:      26661    IO-APIC-edge  ide1
169:       3469   IO-APIC-level  eth0
177:          0   IO-APIC-level  uhci_hcd:usb3
185:     174628   IO-APIC-level  uhci_hcd:usb1, r128@pci:0000:01:00.0
193:          0   IO-APIC-level  uhci_hcd:usb2
201:          0   IO-APIC-level  ehci_hcd:usb4
209:          0   IO-APIC-level  Intel 82801DB-ICH4
NMI:          0 
LOC:     747438 
ERR:          0
MIS:          0