[asterisk-users] Recommendation for extension mapping on inbound T1 line

[Christopher Harrington]

On Fri, Oct 12, 2012 at 9:10 AM, Mitch Claborn <mitch_ml at claborn.net> wrote:
> Converting this customer from a MiTel system to asterisk. Discovered that
> the inbound calls from the T1 are going to extension 366.  (This was mapped
> in the MiTel for some arcane purpose.)  The dial plan I am currently using
> is shown below.  When loading the dial plan, I get this warning:
>
>  WARNING[5004]: pbx_config.c:1561 pbx_load_config: The use of '_.' for an
> extension is strongly discouraged and can have unexpected behavior.  Please
> use '_X.' instead at line 331 of extensions.conf
>
> Question: Do I need to worry about this warning?