# OpenStage 40 T — Office Digital Desk Phone

URL: https://www.promark.tr/en/products/openstage-40t
Category: Endpoints
Family: [OpenStage TDM Family — 15T / 40T / 60T (Legacy)](https://www.promark.tr/en/products/openstage-tdm)

UP0/E digital phone with tiltable 6-line backlit graphic display, 6 sensor-key programmable keys and a 5-way navigator. Expands with KM40/60 for up to 24 extra keys + BLF40 for 90 extra keys.

## Key features

- Tiltable graphic display — 6 lines, 240 × 128 pixels, monochrome, LED backlit.
- Additional optical call alert LED (red).
- 6 sensor-key programmable keys — soft-labeled, red LED.
- 8 fixed function keys (partly red LED), 5-way navigator, volume +/− keys.
- Full-duplex hands-free + AEC echo cancellation.
- Headset jack (corded/cordless) + USB device port.
- UP0/E digital interface + extended CorNet-TS protocol (software updated over the line).
- Expansion: max. 2 × KM40/60 (12 keys + graphic label, 24 effective) + 1 × BLF40 (90 keys) — external PSU required when KM/BLF is used.
- Wall-mountable; ice blue or lava.

## Specifications

- **Line interface:** UP0/E (CorNet-TS, digital; supports software download)
- **Display:** Tiltable, 6 lines, 240 × 128 pixels, monochrome
- **Backlight:** LED
- **Optical call alert:** Red
- **Programmable keys:** 6 soft-labeled sensor keys (red LED)
- **Fixed function keys:** 8 (partly with LED)
- **Navigation:** 5-way navigator
- **Hands-free:** Full-duplex + AEC
- **Headset jack:** Yes
- **USB:** USB device (1st Party CTI)
- **Bluetooth:** No
- **Expansion:** Max. 2 × KM40/60 + 1 × BLF40 (PSU required)
- **Power supply (PSU):** Optional; mandatory with KM/BLF
- **Wall mounting:** Yes
- **Dimensions (H × W × D):** 70 × 270 × 220 mm
- **Weight:** 1.120 kg
- **Color:** Ice blue or lava
- **Operating temperature:** +5 °C to +40 °C
- **Compatible PBX:** OpenScape Business, OS 4000, HiPath 3000/4000

## Use cases

- Office worker desk — 6 soft-labeled keys + tiltable display for daily heavy call handling.
- Call-center agent — CRM integration via USB CTI + headset jack.
- Secretariat — 2 × KM40/60 adds 24 BLF keys for team monitoring; external PSU included.
- OS 4000 digital refresh — replacement of legacy OptiPoint 410/500 (UP0/E preserved).
- Hotel reception (TDM) — BLF40 expansion for room-status monitoring + graphical display.

## For a quote and BOM

https://www.promark.tr/en/contact · +90 312 544 0915 · destek@promark.tr