# OpenScape Business X3R — 2U Rack UC Platform

URL: https://www.promark.tr/en/products/osbiz-x3r
Category: PBX & UC
Family: [OpenScape Business](https://www.promark.tr/en/products/openscape-business)

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.

## Key features

- All-in-one UC: voice, instant messaging, presence, voicemail, conferencing and contact center.
- Single-system scaling to 500 subscribers — IP (max 500), digital (24), analog (20), DECT (64) in parallel.
- 120 SIP trunk channels (up to 8 SIP providers) + 16 ISDN S0 + 30 ISDN S2M — 250 total trunk channels.
- Hybrid by design: SIP/IP, digital UP0/E, legacy analog and DECT cordless on one PBX — phased migration possible.
- 60 simultaneous conference channels + 8 fax channels (500 fax subscribers via UC Suite).
- myPortal clients: 500 desktop, 250 @work web, 500 Outlook integration, 20 myAttendant.
- Microsoft Teams Interworking — 500 users keep their corporate number while working in Teams.
- myAgent contact center: 64 parallel agents — with built-in ACD/IVR.
- On-premises: data stays in your network, no cloud dependency; optional UPS for power resilience.
- 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:** 2U rack
- **Dimensions (H × W × D):** 89 × 440 × 380 mm
- **Weight:** ≈ 6 kg
- **Color:** Gray / Green
- **Mainboard:** V3 Advanced
- **Max subscribers:** 500
- **IP subscribers:** max 500
- **Digital subscribers (UP0/E):** max 24
- **Analog subscribers:** max 20
- **DECT (CMI):** max 64
- **SIP trunk channels:** 120 (max 8 SIP providers)
- **ISDN S0 / BRI:** max 16
- **ISDN S2M / PRI:** max 30
- **Total trunk channels:** 250
- **Conference channels:** 60
- **Fax channels:** 8
- **myPortal Desktop:** max 500
- **myPortal @work:** max 250
- **myPortal Outlook:** max 500
- **myAttendant:** max 20
- **myAgent (parallel agents):** max 64
- **Microsoft Teams Interworking:** max 500
- **Power:** 100–240 V AC, 50–60 Hz (optional 48 V DC battery/UPS)
- **Operating temperature:** +5 °C to +40 °C
- **Humidity:** 5–85%

## Use cases

- SMB headquarters — 30–100 user company, IP desk + DECT + Bluetooth headset on one PBX.
- Branch connectivity — single dial plan between HQ and branch via SIP trunk; local survivability per site.
- Call center — 20–50 agent operation with built-in ACD/IVR, weekly SLA reports via myReports.
- Hotel — analog FXS room phones + reception CP series + housekeeping DECT, one platform.
- Manufacturing — alarm capture and escalation from fire/security panels (together with OScAR).

## For a quote and BOM

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