Panasonic KX-TDA0484 - Manual (Page 34)

2.2 Programming
34 Programming Guide
* Group No.
Specifies the number of the gateway group to which the
gateway entry belongs.
Grouping is useful when there is more than one card installed
in a PBX, because it allows you to use the automatic route
redirection feature. For details, refer to "Detailed
Explanations" in the next section, "2.2.7 Address Translation
Table—DN2IP Entry".
0 0 (belong to no group),
1 to 256
Parameter & Description Default Value Range