Section 2: Components10 Product DescriptionOther Station EquipmentSLT Adapter — P/N 0891026The SLT Adapter converts a digital port from an ESIU PCB intoan analog port which can be used for connecting on-premise2500 type single line devices (i.e., telephones, fax machines,modems, etc.) and to telco OL13B/C OPX circuits. The SLTAdapter provides the ring generator circuit used by the analogdevice. The unit provides constant current which is fixed at 47mA. Each SLT Adapter requires its own digital port.Refer to Single Line Telephones in the Software Manual for more details.Door Box — P/N 92245The Door Box is a self-contained Intercom unit typically used to monitor anentrance door. A visitor at the door can press the Door Box call button (like adoor bell). The Door Box then sends chime tones to all extensions programmedto receive chimes. A 2PGDAD Module is required for this feature.Each 2PGDAD module audio output can optionally support two analog DoorBoxes. In addition, you can connect each circuit’s control relay to an electric door strike. Thisallows an extension user to remotely activate the door strike while talking to a visitor at the DoorBox. The control relays are normally open. The NTCPU also provides 1 relay. This relay is definedas relay ‘0’ in programming. The relays on the 2PGDAD modules are numbered 1-8. The systemcan have up to eight Door Boxes.110-Button DSS Console — P/Ns 0890051 & 089005224-Button DLS Console — P/Ns 0890053 & 0890054The DSS (Direct Station Selection) Console gives a keyset user aBusy Lamp Field (BLF) and one-button access to extensions,trunks and system features. The 110-Button DSS Console pro-vides an additional 100 programmable keys, while the 24-ButtonDLS Console provides 24 programmable keys. The 110-ButtonDSS also has 10 fixed feature keys for Paging, calling Door Boxes,activating Night Service and enabling DSS Console AlternateAnswer. There are also two keys that allow “shifting” between thefirst and second set of 100 extensions.Keep the following in mind when installing DSS Consoles: A 110-Button DSS Console requires a separate digital station port.