Siemens business phone systems, from entry-level group phones to IP PBX solutions for SMEs, are configurable based on extension count, trunk type, and network requirements.
HiPath 4500 IP Aggregation Platform
IP-integrated communication platform for mid-to-large enterprises
Product series covers various scales by model: HiPath 3800 handles local switching, while the three OpenScape Business models integrate voice, voicemail, and call center functions into a single device.
Scroll horizontally to view the full comparison of all three models.
| Parameters | Group Phone Series1100–4000 Full Line | HiPath 3800Local Voice Exchange | X8Mid-to-large Headquarters | X5RMid-sized Headquarters | X3RSmall Office |
|---|---|---|---|---|---|
| Digital Users / Work Points | Dozens to tens of thousands, depending on the model | 500 Work Point (supports up to 1000 users in a network) | 384 doors | 56 doors | 24 doors |
| IP User | Varies by model and interface board configuration | Unlimited based on interface board configuration; not publicly disclosed. | 500 | 500 | 500 |
| Computer Receptionist / Voicemail | Supported, configured by model | Voicemail Card (8 / 24 port) | 10 Channel / 100 Email | 10 channel(s) / 100 email(s) | 10 channel(s) / 100 email(s) |
| UC Smart | — | — | Smart 50; Voicemail 320; Mobile App 50 (30 concurrent) | Smart 50; Voicemail 320; Mobile App (30 concurrent) | Smart 50; Voicemail 320; Mobile App 50 (30 concurrent sessions) |
| UC Suite | — | — | Outlook 500; Email 500; Mobile 200 (30 concurrent); Agent 64 | Outlook 500; Email 500; Mobile 200 (30 concurrent); Agent 64 | Outlook 500; Email 500; Mobile 200 (30 concurrent); Agent 64 |
| Call Center | — | — | 64 Agent, Chinese Interface | 64 Agent, Chinese Interface | 64 Agent, Chinese Interface |
| Meeting capabilities | Five-Party Conference (Model Dependent) | Five-party meeting | 5 Group 16 Party + Network Collaboration | 5 Group 16 Party + Network Collaboration | 5 group 16 party + network collaboration |
| Recommended Scale | For small offices to mid-sized enterprises, supporting tens to hundreds of extensions per site. | 300～500 local exchange at work sites; supports up to 1000 users in a network. | 300–500 Workstation | 50～200 Workstations | 20～50 Workstation |
Specifications are sourced from the manufacturer's public product pages. For the Group Telephone series, model ranges within each series are listed in a single row; refer to individual detail pages for specific model specifications. The three OpenScape Business unified communications and call center software solutions share identical capabilities; differences lie primarily in digital user interfaces. "—" indicates that the feature is not built-in for that model and requires separate application or terminal configuration. Actual configurations and licensing depend on the selected option list.View product details
Siemens IP-based PBX and Integration Platform, combined with Mitel Unified Communications, Teams integration, and desk/cordless/conferencing terminals. Select based on platform and workstation type.
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PBX
IP PBX Multimedia Switch for SMBs
Modular architecture combining a basic chassis and expansion units. Supports 500 workstations on a standalone system and up to 1000 users in a networked configuration. Provides wireless mobile voice via DECT and VoWLAN, and functions as a self-healing remote module for HiPath 4000.
PBX
HiPath 1100 / 1800 / 3550 / 3750 / 3800 / 4000 - Full Product Line
Siemens key telephone systems and PBX solutions for small offices to mid-sized enterprises. Select models based on the number of extensions, trunk types, and networking requirements, paired with optiPoint digital handsets and dedicated phones.
PBX
Unified Communication Server for Mid- to Large-Sized Enterprises
One device handles voice switching, unified communications, voicemail, and call center services: 384 digital lines plus 500 IP users, with built-in 10-channel automated attendant and 64 agent call center—ideal for centralized deployment at headquarters and campuses.
PBX
Unified communications server for mid-sized businesses
Unified communication server for mid-sized enterprises: supports 56 digital lines and 500 IP users. Expand to IP endpoints while retaining existing digital phones, with integrated voicemail, conferencing, and call center capabilities.
PBX
Unified Communications Server for Small Offices and Branch Locations
Compact series models: 24-port digital and 500-IP user stations, designed for small offices and branch locations to handle on-site voice switching while supporting voicemail, conferencing, and call center software.
Differences in PBX systems lie in slots, interface cards, and networking capabilities. By narrowing requirements to these three dimensions, selection is typically finalized in one round.
01
Count seat numbers, concurrent call channels, and peak-hour traffic to determine the number of chassis slots and whether an expansion chassis is needed.
02
Confirm whether the carrier provides analog lines, E1 digital trunks, or SIP trunks. The interface card must match the service provider's provisioning method.
03
Multi-site deployments require unified short numbers and centralized operations. Verify whether separate licenses are needed for call recording, hotel integration, CTI, and other services.
Page parameters are compiled from vendor public data. Interface board configurations, licenses, and pricing are subject to the selection list confirmation.
Specify the number of workstations, concurrent channels, existing trunks (analog/E1/SIP), and whether networking is required. We will provide a configuration list including the system model, interface cards, and handsets.
Submit your requirements and contact details. A sales consultant will confirm pricing, stock availability, and delivery options with you. Product prices are subject to quotation.
