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UNIFY OpenScape Business

From powerful telephony to a feature-rich set Unified Communication (UC) solution, OpenScape Business always provides enterprises with up to 500 subscribers, or 1000 subscribers in one network, with the right solution.

UNIFY OpenScape Business

OpenScape Business is the all-in-one solution for small and medium-sized enterprises and offers:

  • Integrated voice services, presence management (presence state), Drag&Drop conference, visual voicemail (voiceboxes), AutoAttendant, Multimedia Contact Center, IM (Instant Messaging), mobility, directory access with database connection, fax, integration in business processes and much more.
  • UC clients individually matched to the work station and work processes
  • Interface integration of OpenScape Web Collaboration
  • Solutions for customers with one site or network-wide solutions with multiple sites

ATHL  Solutions

OpenScape Business provides a uniform solution architecture:

  • Various OpenScape Business models are available for different existing infra-structure sizes (X3/X5/X8). Alternatively, it is possible to operate the OpenScape Business software on a standard server (softswitch), of course also in fully virtu-alized environments. 
  • Regardless of the model, 500 subscrib-ers are always supported (sum of IP, ana-log, and digital subscribers). 
  • Optimized hardware concept: VoIP and data components are already integrated on the mainboard.
  • UC also has provision on the mainboard for up to 50 users (UC Smart). For multi-ple UC users and further UC functional-ity (UC Suite) there are extensions by a UC Booster Card (for up to 150 users) or a UC Booster Server (for up to 500 users). 
  • UC software and hardware incl. Drag&Drop Conference and Multimedia Contact Center for all models 
  • All communication interfaces needed for the diverse and heterogeneous requirements exist: IP, digital, analog and DECT, as well as all current trunk interfaces for voice communication. 

 OpenScape Business X3 OpenScape Business X5  OpenScape Business X8  OpenScape Business S 
X3 gắn Rack
X5 gắn Rack
X8 gắn Rack hoặc tủ đứng
Phần mềm

X3 treo tường
X5 treo tường

Detailed product specifications


OpenScape Business X3 OpenScape Business X5 OpenScape Business X8 OpenScape Business S
BRI Trunks 20 52 128 N/A
PRI Trunks 0 30 128 N/A
ITSP Trunks 60 60 60 128
Analog Stations 20 Rack system
36 Wall system
56 Rack system
68 Wall system
384 N/A
Digital Phones 24 56 384 N/A
IP Phones 500 500 500 500
Cordless/DECT Phones 32 32 Rack system
64 Wall system
250 N/A
Max.# of Phones 500 500 500 500

Supported Standards


  • RFC 894 Ethernet II Encapsulation
  • IEEE 802.1Q Virtual LANs
  • IEEE 802.2 Logical Link Control
  • IEEE 802.3u 100BASE-T
  • IEEE 802.3ab Gigabit Ethernet
  • IEEE 802.3X Full Duplex Operation


Control Protocol (IPCP)

  • RFC 1334 PPP Authentication Protocols
  • RFC 1618 PPP over ISDN
  • RFC 1661 The Point-to-Point Protocol (PPP)
  • RFC 1877 PPP Internet Protocol Control Protocol
  • RFC 1990 The PPP Multilink Protocol (MP)
  • RFC 1994 PPP Challenge Handshake Authentication Protocol (CHAP)
  • RFC 2516 A Method for Transmitting PPP Over Ethernet (PPPoE)
  • RFC 3544 IP Header Compression over PPP





  • IEEE 802.1p Priority Tagging
  • RFC 1349 Type of Service in the IP Suite
  • RFC 2475 An Architecture for Differentiated Services
  • RFC 2597 Assured Forwarding PHB Group
  • RFC 3246 An Expedited Forwarding PHB (Per-Hop Behavior) Services
  • RFC 2597 Assured Forwarding PHB Group
  • RFC 3246 An Expedited Forwarding PHB (Per-Hop Behavior)


  • G.711
  • G.729


  • CSTA Phase III
  • TAPI Service Provider for TAPI 2.1

VoIP over SIP

  • RFC 2198 RTP Payload for Redundant Audio Data
  • RFC 2327 SDP Session Description Protocol
  • RFC 2617 HTTP Authentication: Basic and Digest Access Authentication
  • RFC 2782 DNS RR for Specifying the Location of Services (DNS SRV)
  • RFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
  • RFC 3261 SIP Session Initiation Protocol
  • RFC 3262 Provisional Response Acknowledgement (PRACK) Early Media
  • RFC 3263 SIP Locating Servers
  • RFC 3264 An Offer/Answer Model with the Session Description Protocol
  • RFC 3310 HTTP Digest Authentication
  • RFC 3311 Session Initiation Protocol (SIP)UPDATE Method
  • RFC 3323 A Privacy Mechanism for the Session Initiation Protocol (SIP)
  • RFC 3325 Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks
  • RFC 3326 The Reason Header Field for the Session Initiation Protocol SIP)
  • RFC 3489 STUN - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
  • RFC 3515 The Session Initiation Protocol (SIP) Refer Method
  • RFC 3550 RTP: Transport Protocol for Real-Time Applications
  • RFC 3551 RTP Profile for Audio and Video Conferences with Minimal Control
  • RFC 3581 An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
  • RFC 3725 Best Current Practices for Third Party Call Control (3pcc) in the Session Initiation Protocol (SIP)
  • RFC 3842 A Message Summary and Message Waiting Indication Event Package for the Session Initiation Protocol (SIP)
  • RFC 3891 The Session Initiation Protocol (SIP) Replaces Header
  • RFC 4040 RTP Payload Format for a 64 kbit/s Transparent Call

VoIP Security


  • RFC 3920 Extensible Messaging and Presence Protocol (XMPP): Core
  • RFC 3921 Extensible Messaging and Presence Protocol (XMPP): Instant Messaging and Presence


Product Documentation

OpenScape Business V1_ Data Sheet_ Issue

This item is available in the following models

Model Code Retail Weight Information
OpenScape Business X3 OSBizX3 $0.00 0.00
OpenScape Business X5 OSBizX5 $0.00 0.00
OpenScape Business X8 OSBizX8 $0.00 0.00
OpenScape Business S OSBizS $0.00 0.00