OpenStage Key Module 15 — DSS Key Expansion Module
DSS expansion module for OpenStage 15 (IP) and OpenStage 15T / 30T / 40T (TDM) phones, adding 18 LED-equipped freely programmable keys. Usable as line, speed-dial or feature keys; paper-insert labeling.

Specifications
- Tuş sayısı / Keys
- 18
- Tuş tipi / Key type
- Mekanik, LED'li
- Etiketleme / Labeling
- Kağıt inlay (yazılabilir veya baskılı)
- Bağlantı / Connection
- Telefon yan portu (kablosuz, direkt takılır)
- Maks. modül / Max modules
- Telefon başına 1
- Uyumlu telefonlar (IP)
- OpenStage 15, OpenStage 40
- Uyumlu telefonlar (TDM)
- OpenStage 15T, OpenStage 30T, OpenStage 40T
- Renk / Color
- Ice blue veya lava
- Harici güç / External PSU
- Gerekmez
- Çalışma / Operating
- +5 °C ila +40 °C
Key features
- 18 freely programmable keys — line, speed-dial or feature; LED on every key.
- Paper-insert labeling — printed or hand-written personalization.
- Plugs directly into the phone's side port — no extra cable or PSU required.
- Up to 1 module per phone (18 extra keys total).
- Ice blue or lava color — matched to the connected phone.
- Compatible IP phones: OpenStage 15 / 40 (HFA/SIP).
- Compatible TDM phones: OpenStage 15T / 30T / 40T.
Typical applications
Secretariat — 18 BLF keys to monitor an executive's line state.
Reception (entry tier) — speed-dial keys for frequently called internal numbers.
Small transfer-heavy operations — one-touch transfer to 18 internal users.
Hotel floor supervisor — limited number of keys for room status (BLF).
Legacy OptiPoint Beistellgerät replacement — compatible module on the TDM side.
Related Solutions
Related Products

Switchboard/operator module connecting to OpenStage 40 and OpenStage 60 phones, with 90 freely programmable LED keys. Paper-insert labeling; supported on HFA (IP) and TDM (OpenStage 30T/40T/60T).
Details
Expansion module for OpenStage 40 (IP/T) and OpenStage 60 (IP/T) phones with 12 programmable keys in 2 layers (effective 24) and a large graphical labeling display. Up to 2 modules per phone — 48 effective keys total.
Details
Full-featured entry-level IP desk phone — 2-line monochrome display, 8 LED programmable keys and AudioPresence HD voice quality in an ergonomic speakerphone for office users. Available in HFA (Unify) and open SIP variants, with optional Gigabit Ethernet (15G).
Details
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.
Details
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.
Details
Compact 2U rack UC platform for mid-size offices — a hybrid telephony system scaling up to 500 users, with IP, digital, analog and DECT endpoints on a single platform.
DetailsDSS expansion module for OpenStage 15 (IP) and OpenStage 15T / 30T / 40T (TDM) phones, adding 18 LED-equipped freely programmable keys. Usable as line, speed-dial or feature keys; paper-insert labeling.