OpenStage 15 T — Entry-level Digital Desk Phone
Full-featured entry-level TDM desk phone connecting to OpenScape Business / OpenScape 4000 via the UP0/E digital interface, with a 2-line display and 8 LED-equipped programmable keys. Backward compatible with OptiPoint.
From the same family
Specifications
- Line interface
- UP0/E (CorNet-TS, digital; supports software download)
- Display
- 2 lines, 205 × 41 pixels, monochrome (fixed 30°)
- Backlight
- No
- Programmable keys
- 8 (red LED, paper inlay)
- Fixed function keys
- 3 (red LED)
- Navigation
- 3 navigation keys
- Hands-free
- Full-duplex + AEC
- Headset jack
- No
- USB
- No
- Bluetooth
- No
- Expansion
- Max. 1 × OpenStage Key Module 15
- Power supply (PSU)
- Optional (country variant)
- Wall mounting
- Yes
- Dimensions (H × W × D)
- 70 × 240 × 220 mm
- Weight
- 0.777 kg
- Color
- Ice blue or lava
- Operating temperature
- +5 °C to +40 °C
- Compatible PBX
- OpenScape Business, OS 4000, HiPath 3000/4000
Key features
- 2-line monochrome graphic display (205 × 41 pixels, fixed 30° viewing angle, no backlight).
- 8 programmable keys (red LED) — usable as line keys or speed-dial/feature keys; paper inlay labeling.
- 3 fixed function keys (red LED) + 3 navigation keys + volume +/− keys.
- Full-duplex hands-free + AEC echo cancellation.
- UP0/E digital interface + extended CorNet-TS protocol (software updated over the line).
- Expansion: max. 1 × OpenStage Key Module 15 (18 extra LED keys).
- Wall-mountable.
- Ice blue or lava color; OptiPoint backward compatibility — 1:1 swap of legacy fleet.
- Compatible with OpenScape Business, OS 4000, HiPath 3000/4000.
Typical applications
OptiPoint refresh — 1:1 replacement of legacy Optiset/OptiPoint phones without IP migration.
OS 4000 plant facility — standard user phone where digital UP0/E infrastructure is preserved.
Hotel/hospital TDM room phone — sites with heavy analog/digital usage; PSU or line-powered.
Banking and public buildings — environments without IP infrastructure; red LED + 8 line keys standard.
Emergency line — TDM backup line that keeps working without IP failover (operator arm).
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DetailsFull-featured entry-level TDM desk phone connecting to OpenScape Business / OpenScape 4000 via the UP0/E digital interface, with a 2-line display and 8 LED-equipped programmable keys. Backward compatible with OptiPoint.