No such device or address (6)

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Asterisk Users 4 Comments

Hi all,

I have problems starting dahdi.
dahdi_cfg -vvv allwasy comes back with:

DAHDI Tools Version –

DAHDI Version:
Echo Canceller(s):

SPAN 1: CCS/ AMI Build-out: 0 db (CSU)/0-133 feet (DSX-1)

Channel map:

Channel 01: Clear channel (Default) (Echo Canceler: kb1) (Slaves: 01)
Channel 02: Clear channel (Default) (Echo Canceler: kb1) (Slaves: 02)
Channel 03: Hardware assisted D-channel (Default) (Echo Canceler: none) (Slaves: 03)

3 channels to configure.

DAHDI_SPANCONFIG failed on span 1: No such device or address (6)

I searched the internet but could not yet find a solution.
I already tried to exchange the zaphfc drivers as suggested, but they did not compile.

I actually did not find a new(er) tutorial how to build an Asterisk with a HFC-S card.

Any suggestions / hints / tutorials / links welcome.

Do I need some special drivers in the kernel ?
Modprobe ?
Anything else special I need ?



I run Debian 6.0.4 with a fresh 2.6.35 Kernel, most drivers compiled as modules.

I installed the newest Asterisk 10.2.0-rc2 and dahdi_sources and compiled them, but same happened with aptitude install dahdi on older kernel.
download Asterisk -> ./configure -> make -> make install -> make samples
download dahdi.tar.bz2 -> make -> make install

driver should be ‘zaphfc’ but is actually ‘hfcpci’
pci:0000:00:0d.0 zaphfc+ 1397:2bd0 HFC-S ISDN BRI card

4 thoughts on - No such device or address (6)

  • kb1? Why not mg2 (or OSLEC or whatever)?

    What’s the output of lsdahdi ?

    Well, mainly useful for producing patches and such). has some Squeeze backports. Though
    they’re not kept up-to-date all the time. They include zaphfc.

    You should probably blacklist hfcpci.

    echo ‘blacklist hfcpci’ >>/etc/modprobe.d/WHATEVER.conf

    (Replace WHATEVER with whatever name). Then run ‘rmmod hfcpci’ once to
    remove that module at this time.

  • ‘-‘ means that no module is actually loaded. Do you have zaphfc ?

    If so: try: modprobe zaphfc

    The -source is already patched. There is actually one big patch there
    (with the external drivers) and as it mentions – it is taken from the
    git repo I mentioned.

    Those three are for a different card, so they are irrelevant (harmless,