OpenVox B100E on DAHDI User Manual page 21

the driver by running commands:
# modprobe dahdi
# modprobe zaphfc
# dahdi_genconf
# dahdi_cfg -vvv
There are two issues for B100E NT mode:
 Sometimes the first call can't work normally, in such cases, it is need
to restart Asterisk.
 The system runs "modprobe zaphfc" in default, but it is for TE
mode, so it is necessary to run "modprobe zaphfc modes=1
force_11_up=0" for NT mode when the machine restarts. After
reboot, please run commands:
# modprobe -r zaphfc
# modprobe zaphfc modes=1 force_l1_up=0
Or add the following line in the file /etc/modprobe.conf:
options modprobe zaphfc modes=1 force_l1_up=0
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B100E on DAHDI User Manual
(In TE mode)
20
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