Ubuntu 15.10
TDM410 digium card
Port 1: FXS
Port 2: FXO
Port 3: FXO
Port 4: FXO
/etc/dahdi/system.conf
loadzone = us
defaultzone = us
fxoks=1
fxsks=2,3,4
# lspci -vvv -s 05:06.0
05:06.0 Ethernet controller: Digium, Inc. Wildcard TDM410 4-port analog card (rev 11)
Subsystem: Digium, Inc. Wildcard TDM410 4-port analog card
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (16000ns min, 32000ns max), Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 20
Region 0: I/O ports at ae00 [size=256]
Region 1: Memory at fdaff000 (32-bit, non-prefetchable) [size=1K]
[virtual] Expansion ROM at fd900000 [disabled] [size=128K]
Capabilities: [c0] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: wctdm24xxp
$ lsmod | grep -i dahdi
dahdi_voicebus 61440 1 wctdm24xxp
dahdi 225280 2 wctdm24xxp,dahdi_voicebus
crc_ccitt 16384 2 wctdm24xxp,dahdi
$ dahdi_cfg -vvv
dahdi_ioctl_chanconfig: No Channel for number 1.