# OpenScape Desk Phone CP405T — Graphical-display TDM Desk Phone

URL: https://www.promark.tr/en/products/cp405t
Category: Endpoints
Family: [CP TDM Family — CP205T / CP405T](https://www.promark.tr/en/products/digital-phones)

Mid-tier TDM desk phone for OpenScape Business and OpenScape 4000 via UP0/E digital interface, with a 3.7" 240 × 120 pixel graphical display (white LED backlight) and 16 programmable keys. Expandable with up to 2 KM400 modules.

## Key features

- 3.7" pivotable graphical display — 240 × 120 pixels, monochrome, white LED backlight.
- 4 context-sensitive softkeys (green LED) + 2 fixed function keys (service menu / forwarding).
- 16 freely programmable function keys with green LED, personalized via paper-inlay labels.
- Full-duplex hands-free + open listening + AEC echo cancellation.
- Professional headset jack (DHSG/EHS); USB Slave for 1st Party CTI applications.
- Signaling LED (red/green/orange) for call state.
- Expansion: up to 2 OpenScape Key Modules 400 (extra 36 paper-labeled keys).
- UP0/E digital interface + extended CorNet-TS protocol.
- Compatible with OpenScape Business V3R3+ and OpenScape 4000 V10R1+.

## Specifications

- **Line interface:** UP0/E (CorNet-TS, digital)
- **Display:** 3.7" 240 × 120 pixels, monochrome graphic, pivotable
- **Backlight:** White LED
- **Programmable keys:** 16 (green LED, paper-inlay label)
- **Context-sensitive softkey:** 4 (green LED)
- **Fixed function keys:** 2 (service menu / forwarding)
- **Signaling LED:** Red / green / orange
- **Navigation:** 4-way + OK
- **Audio keys:** Mute, speaker, headset (with LED); volume +/−
- **Hands-free:** Full-duplex + open listening (AEC)
- **Headset jack:** DHSG/EHS
- **USB:** USB Slave (1st Party CTI)
- **Wall-mount:** No
- **Key module:** Up to 2 × OpenScape KM400
- **Dimensions 20°:** 143 × 283 × 207 mm (H × W × D)
- **Dimensions 45°:** 189 × 283 × 165 mm
- **Weight:** 1.13 kg
- **Color:** Black
- **Storage:** −40 °C to +70 °C
- **Operating:** +5 °C to +40 °C
- **Compatible PBX:** OpenScape Business V3R3+, OpenScape 4000 V10R1+

## Use cases

- Executive and manager desks — on OpenScape 4000 without an IP fabric; team monitoring via 16 BLF keys.
- Hotel TDM reception — 2 × KM400 expansion delivers 36 extra BLF keys for room and service routing.
- Hospital department secretariat — green LED + paper-inlay personalization for analog/digital-heavy environments.
- OpenScape 4000 V10+ refresh projects — one-to-one replacement of legacy OptiPoint/Optiset desk phones.
- Administrative block mid-tier users — graphical display + CTI USB + 16 programmable keys, no IP migration required.

## For a quote and BOM

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