Digium TC400B, User Manual

Page: 29 / 44

Chapter 3
Configuration
No changes to system.conf or chan_dahdi.conf are necessary to utilize this
card. The ‘mode’ module parameter may be used to specify whether the
card can be used to transcode G.729a, G.723.1, or both.

mode = mixed - This default option will enable 92 calls of G.729a or
G.723.1 (5.3 Kbit and 6.3 Kbit)

mode = g729 - This option will enable 120 calls of G.729a

mode = g723 - This option will enable 92 calls of G.723.1 (5.3 Kbit
and 6.3 Kbit)
The 'mode' module parameter may be set in either /etc/modprobe.conf or
/etc/modprobe.d/dahdi.conf, depending on the Linux distribution, by
adding a line similar to the following:
options wctc4xxp mode=g729
Then execute “/etc/init.d/dahdi reload” for this change to take effect.
Note: Asterisk must not be running in order for this to be successful.
Digium, Inc. Page 29