|The E-10, E -1 5 and E-20A speaker phones are designed to provide two-way handsfree communication.
The E-10, E-15 and E-20A can be connected directly to a C.O. line or analog PABX/KSU station when used in conjunction with a Hot-Line Dialer or programmed ring down circuit. The E-10, E-15 and E-20A can also be used with Viking’s DLE-20A0B ring down circuit.
When the "Call" button is pressed, the E-10/E-20A will come off-hook and will remain off-hook until the pre-selected timeout has elapsed (adjustable from approximately 25 seconds - 6 minutes). During this time the user may converse handsfree. Alternatively, the E-15 "Call" button must be pressed and held for the duration of the call.
Note: For a programmable phone with a built-in dialer see the E-30