[asterisk-users] Meetmee user introduction disabled

[Theo Band]

I updated Asterisk to 1.6.2.7 and now the user introduction in the
meetme application is no longer working:

[May 27 09:26:51] WARNING[2407]: channel.c:4034 ast_request: No channel
type registered for 'DAHDI'
    -- Created MeetMe conference 1023 for conference '800'
[May 27 09:26:51] WARNING[2407]: app_meetme.c:3640 find_conf: No DAHDI
channel available for conference, user introduction disabled (is
chan_dahdi loaded?)
[May 27 09:26:51] WARNING[2407]: app_meetme.c:3646 find_conf: No DAHDI
channel available for conference, conference recording disabled (is
chan_dahdi loaded?)


The conference itself seems to work. The box does not have any special
hardware so dadhi is only needed for timing and as I understood for
conference mixing. As part of the update I also updated the dadhi
modules and the kernel (all with "yum update"):

kmod-dahdi-linux-2.3.0.1-1_centos5.2.6.18_194.3.1.el5
kmod-dahdi-linux-2.2.1-1_centos5.2.6.18_164.11.1.el5

First I noted that dahdi_dummy is no longer present in
kmod-dahdi-linux-2.3.0.1-1. Reverting back to kmod-dahdi-linux-2.2.1-1
solved that issue, now the module is loaded again.
lsdahdi
### Span  1: DAHDI_DUMMY/1 "DAHDI_DUMMY/1 (source: Linux26) 1" (MASTER)
lsmod|grep dahdi_dummy
dahdi_dummy             8612  0
dahdi                 194504  14
dahdi_dummy,xpp,dahdi_transcode,wcb4xxp,wctdm,wcfxo,wctdm24xxp,wcte11xp,wct1xxp,wcte12xp,dahdi_voicebus,wct4xxp


Asterisk however shows the same warning message. So I guess something
has changed in the meetme application itself and it does not seem to use
dahdi_dummy anymore?
What steps can I take?

Theo