Mine

pbx01:/etc/asterisk$ cat /proc/interrupts
           CPU0       CPU1
  0:   71933227          0    IO-APIC-edge  timer
  6:          5          0    IO-APIC-edge  floppy
  7:          0          0    IO-APIC-edge  parport0
  8:  147141910          0    IO-APIC-edge  rtc
  9:          0          0   IO-APIC-level  acpi
 14:    2682146          0    IO-APIC-edge  libata
 15:    2532117          0    IO-APIC-edge  libata
 50:    1007305          0   IO-APIC-level  uhci_hcd:usb5, ehci_hcd:usb6, eth1
 58:          1          0         PCI-MSI  sky2
 66:     163165          0   IO-APIC-level  HDA Intel
 74:  287784743          0   IO-APIC-level  wctdm
169:   17829976          0   IO-APIC-level  uhci_hcd:usb1, ide2, nvidia
177:      26510          0   IO-APIC-level  uhci_hcd:usb4, libata, libata
225:         43          0   IO-APIC-level  uhci_hcd:usb2
233:          2          0   IO-APIC-level  uhci_hcd:usb3, ehci_hcd:usb7
NMI:        138         44
LOC:   70352038   70352015
ERR:          0
MIS:          0

pbx01:/etc/asterisk$ sudo /sbin/ztcfg -vvvv

Zaptel Configuration
======================


Channel map:

Channel 01: FXO Kewlstart (Default) (Slaves: 01)
Channel 02: FXS Kewlstart (Default) (Slaves: 02)
Channel 03: FXS Kewlstart (Default) (Slaves: 03)
Channel 04: FXS Kewlstart (Default) (Slaves: 04)

4 channels configured.