# OpenScape Desk Phone CP205T — Entry-level Digital Desk Phone

URL: https://www.promark.tr/en/products/cp205t
Category: Endpoints
Family: [CP TDM Family — CP205T / CP405T](https://www.promark.tr/en/products/digital-phones)

Entry-level TDM desk phone connecting to OpenScape Business and OpenScape 4000 platforms via the UP0/E digital line interface. 192 × 48 pixel two-line display, 4 programmable keys, full-duplex hands-free and USB CTI port.

## Key features

- 192 × 48 pixel two-line monochrome graphical display (no backlight).
- 4 freely programmable function keys with green LED; pre-assigned: call log, contacts, forwarding, redial.
- 5 fixed function keys (3 with red/green/orange LED): hold, transfer, conference, settings, messages.
- Signaling LED (red/green/orange) for call state.
- Full-duplex hands-free + open listening + AEC echo cancellation.
- Professional headset jack (DHSG/EHS); USB Slave for 1st Party CTI applications.
- UP0/E digital interface + extended CorNet-TS protocol — software updates over the line.
- Wall-mounting supported; two-stage (20° / 45°) base.
- Compatible with OpenScape Business V3R3+ and OpenScape 4000 V10R1+.

## Specifications

- **Line interface:** UP0/E (CorNet-TS, digital)
- **Display:** 192 × 48 pixels, monochrome graphic, 2 lines
- **Backlight:** None
- **Programmable keys:** 4 (green LED)
- **Fixed function keys:** 5 (3 with LED)
- **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:** Yes
- **Key module:** None
- **Dimensions 20°:** 113 × 219 × 207 mm (H × W × D)
- **Dimensions 45°:** 173 × 219 × 165 mm
- **Weight:** 0.84 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

- Refreshing existing UP0/E infrastructure — direct one-to-one replacement of legacy digital phones without IP migration.
- Digital endpoint on OpenScape 4000 — non-IP buildings, hotel room phones with high voice usage.
- Call-center backup line — TDM desk that keeps working during IP failover.
- Entry-level users — secretarial, warehouse, factory supervision office: basic voice + CTI USB.
- Phased renewal of an old PRI/UP0/E phone fleet — bridging period before full IP migration.

## For a quote and BOM

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