asterisk users - Dec 2008 - Difference between DAHDI/G1/0123456789 and DAHDI/g1/0123456789

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
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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

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
> 
Using 'g' means that channels will be used starting with the lowest
available
number and then counting up. Starting with 'G' means to start at the
highest
channel number and count down. I believe that incoming calls will use the lowest
numbered channels first, so if your outgoing calls start with the higher numbers
it decreases the chance for "glare" on calls.

Mark Michelson