# OpenScape Business X1R — 1U Rack UC Platform (Small Office)

URL: https://www.promark.tr/en/products/osbiz-x1r
Category: PBX & UC
Family: [OpenScape Business](https://www.promark.tr/en/products/openscape-business)

Compact 1U rack UC platform for small offices and branches — entry-level OpenScape Business model hosting IP, DECT and Bluetooth phones for up to 50 UC users on a single platform, connecting directly to cloud providers via SIP trunks.

## Key features

- 1U rack form factor — 43 mm height, fits in small IT cabinets.
- Up to 50 UC users licensed on Basic V3 Mainboard.
- Max 500 IP subscribers (with licenses and add-on modules), 4 analog and 8 digital UP0/E ports onboard.
- Up to 16 DECT (CMI) handsets integrated cordless.
- 60 SIP trunk channels (max 8 ITSPs) — no ISDN, direct IP/SIP infrastructure.
- myPortal: 50 Desktop, 50 @work, 50 Outlook + 4 parallel myAttendant.
- Microsoft Teams Interworking 150 users; myPortal for Teams 50 users.
- 320 Smart Voicemail boxes + 50 UC Voicemail users.
- On-premises deployment: data stays in your network, no cloud dependency.
- Current software release is OpenScape Business V4 (30.07.2026): X systems with a V3 mainboard and Business S move to V4 via a standard software upgrade; existing licences remain valid.

## Specifications

- **Form factor:** 1U rack
- **Dimensions (H × W × D):** 43 × 436 × 250 mm
- **Weight:** ≈ 3.9 kg
- **Color:** Black
- **Mainboard:** V3 Basic
- **Max UC users:** 50
- **Max subscribers (total):** 500
- **IP subscribers:** max 500
- **Analog subscribers:** max 4
- **Digital subscribers (UP0/E):** max 8
- **DECT (CMI):** max 16
- **SIP trunk / ITSP:** 60 (max 8 SIP providers)
- **ISDN S0 / BRI:** —
- **ISDN S2M / PRI:** —
- **Smart Voicemail:** 320
- **UC Voicemail:** 50
- **Microsoft Teams Interworking:** max 150
- **Power:** 100–240 V AC, 50–60 Hz
- **Operating temperature:** +5 °C to +40 °C
- **Humidity:** 5–85%

## Use cases

- Small branch office — single dial plan for 5–20 user team, IP + DECT mix.
- Single-site SMB — 30–50 employees, IP desk phone + Bluetooth headset, calls via SIP trunk.
- Field site — warehouse, dealership or small construction site: silent 1U cabinet operation + DECT roaming.
- Clinic / dental — 10–30 users: reception CP series + DECT (assistants) + voicemail.
- Boutique hotel / B&B — compact PBX for 20–40 rooms, IVR + emergency call.

## For a quote and BOM

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