# OpenScape Business X5R — 3.5U Rack UC Platform (Mid-Size Enterprise)

URL: https://www.promark.tr/en/products/osbiz-x5r
Category: PBX & UC
Family: [OpenScape Business](https://www.promark.tr/en/products/openscape-business)

3.5U rack UC platform for mid-market organizations requiring higher analog/ISDN port density — same 500-subscriber ceiling as X3R, but with much wider analog (68), ISDN BRI (48) and digital (56) port counts.

## Key features

- 3.5U rack form factor — 155 × 440 × 380 mm, 8 kg; fits easily in any 19" cabinet.
- 3× more analog ports than X3R (68) + 3× more BRI (48) — ideal for sites with significant existing PRI/BRI plant.
- Up to 500 subscribers in one system — IP (500), digital UP0/E (56), analog (68), DECT (64) in parallel.
- 120 SIP trunks + 48 ISDN S0 + 30 ISDN S2M — 250 total trunk channels; supports mixed TDM+IP migration.
- myPortal: 500 Desktop, 250 @work, 500 Outlook + 20 myAttendant + 64 myAgent parallel.
- Microsoft Teams Interworking 500 + myPortal for Teams 500 users.
- 60 conference channels + 8 fax channels (500 fax subscribers via UC Suite).
- Redundant PSU + UPS support — resiliency for critical mid-market organizations.
- On-premises deployment: data on your network, cloud-independent, optional secured remote service.
- 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:** 3.5U rack
- **Dimensions (H × W × D):** 155 × 440 × 380 mm
- **Weight:** ≈ 8 kg
- **Color:** Gray / Green
- **Mainboard:** V3 Advanced
- **Max subscribers:** 500
- **IP subscribers:** max 500
- **Digital subscribers (UP0/E):** max 56
- **Analog subscribers:** max 68
- **DECT (CMI):** max 64
- **SIP trunk channels:** 120 (max 8 SIP providers)
- **ISDN S0 / BRI:** max 48
- **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

- Mid-size holding HQ — 100–200 users, large digital UP0/E phone fleet + ISDN PRI uplink.
- Hospital / health facility — 100–200 scale polyclinic with analog patient room phones + IP doctor desks + DECT nurse call.
- Manufacturing HQ building — office + production line + security gatehouse on one PBX; SIP-trunk with ISDN backup.
- Government regional directorate — analog fax/intercom + digital senior phones + IP next-gen desks.
- University campus — faculty building, 150–200 users; classroom phones + faculty IP sets.

## For a quote and BOM

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