Data Call Button
A flexible button on a digital telephone can be assigned as a 'DWD&DOO button, which can be used to dial internal data calls. The telephone must be equipped with an RPCI-DI for 'DWD&DOO button applications.
Direct Station Selection (DSS) Buttons
Digital telephone users can ring selected stations by pressing a flexible feature button assigned for a DSS function. The LED associated with the button provides the busy status of the station and the station’s [PDN]. Each flexible button can be assigned as a DSS button to a different station [PDN]. DSS buttons can also be assigned on DADMs.
Direct Station Selection (DSS) Console Features
On DK40i and DK424, digital and electronic telephones can operate with DSS consoles, which offer the following features:
o Automatic CO line Hold
Data Call Button
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