Sharp Nec-BE116757 SL2100 1-Client Mobile Extension License

Allows an external telephone (typically a cell phone) to link to the SL2100 via a "Proxy Port" (established in system programming). The Mobile Extension telephone operation is similar to an internal single-line telephone extension
This license is required for each Mobile Extension
Each Mobile Extension Proxy Port utilizes a Station Port in the system, although no physical station port is required
(4) Mobile Extension Clients are built into the SL2100 system software
The maximum quantity of Mobile Extension Licenses that can be added to a system is (28)