[asterisk-users] DAHDI - better to have card?

[Kevin P. Fleming]

Benny Amorsen wrote:
> "Kevin P. Fleming" <kpfleming at digium.com> writes:
> 
>> DAHDI 2.2.0 provides timing without using the dummy driver and without
>> needing any cards. You can use a card for timing, but you'd need to hook
>> up a crossover cable between two of the ports to get them out of red
>> alarm status... but it's really not necessary any longer.
> 
> Does that mean you don't have to load any kernel modules to get MeetMe
> running these days?

No, it's still DAHDI, it's still a kernel module. What's not required
are any additional modules beyond dahdi_dummy, and DAHDI automatically
uses timing provided by hardware (if present) or internal timing.

However, MeetMe requires more than just timing, it also requires
conference mixing, which is provided by DAHDI in any case, regardless of
timing source. ConfBridge does not use DAHDI for mixing, and can use
non-DAHDI sources of timing, but it's still very new.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kpfleming at digium.com
Check us out at www.digium.com & www.asterisk.org