[asterisk-users] Difference between DAHDI/G1/0123456789 and DAHDI/g1/0123456789

[Dave Fullerton]

Olivier wrote:
> Hello,
> 
> Groups in asterisk are summarized here (
> http://www.voip-info.org/wiki/view/Channels+and+Groups).
> Is there any difference between DAHDI/G1/0123456789 and DAHDI/g1/0123456789
> (as I've been advised in another thread, to switch from one notation to the
> other and I can't see the reason behind that) ?
> 
> 
> Regards

Assuming nothing has changed from Zaptel to DAHDI, the difference can 
found here:

http://www.voip-info.org/wiki/view/Asterisk+ZAP+channels

Basically, the lowercase g chooses the lowest number available channel 
from the group where the uppercase G chooses the highest number 
available channel. This is used to reduce glare on analog or T1 
(non-PRI) channels that are part of a hunt group.

-Dave