Use this option to enable or disable the extension’s outgoing access to each Line Group (90-98). Use
this option to enable or disable Line Group Access for incoming (remote) Tie Line callers. If enabled for a
Line Group, remote Tie Line callers will be able to use that group in the local system for outgoing calls.
You separately enable this option for each of the 9 Line Groups (90-98). The access matrix you set up in
3142-[01-64]: Tie Line Caller's Outbound Line Access [Lines: Config: TIE Lines: Line Access (3142): Line Access]
may limit which lines Line Group Access can use.