COMtrexx® Advanced

Ultimate performance COMtrexx Appliance 

Compact and high-performance ICT enterprise-class rack server

Flexible and scalable thanks to COMtrexx floating user licence model

Up to 250 users licensable

Up to 250 parallel calls

Your advantages in detail

COMtrexx Advanced is the most powerful appliance in the COMtrexx solutions line-up. Equipped with an Intel®Xeon® E processor of the latest generation, it offers significant performance headroom for all professional communication requirements. COMtrexx Advanced enables the fast and inexpensive implementation of projects with up to 250 users with a maximum of 250 simultaneous calls

The key facts:

  • up to a maximum of 250 users can be licensed
  • up to 250 parallel calls
  • via zero-touch provisioning of the latest generation, the set-up of devices is carried out in an extremely time-saving, fully automated way
  • optimised for operation with COMfortel D-series SIP phones
  • integrated conference solution with up to 10 parallel conference rooms and 20 internal participants each
  • roaming user function for an easy-to-use support up mobile work environments
  • convenience functions such as central caller lists as well as CTI and BLF possible with the COMfortel D series

Compatible products

Features & technical data

Everything you need to know about our products comes now. Scroll down for more information.

Comfort Features

  • Up to 250 users licensable
  • Up to 250 parallel calls possible1
  • Setting up groups
    • 128 call groups
    • up to 40 members per group
    • Fixed channels can be reserved for group calls
  • Automatic control centre, maximum 10 different configurable
  • Block- and Allowlist, 10 each for coming and going, total maximum 200
  • Call of any second destination in parallel to the registered primary device
  • Call data management with 18,000 data records
  • Call pick-up (e.g. from the integrated voicemail)
  • Broker and mediate
  • Pickup
  • Protection against attacks by setting blocking lists (blocked IP addresses) and activating blocking times
  • Text before signalling (can be switched for groups and for the automatic switchboard)
  • Music on hold with switchable announcement text
  • Autoprovisioning for standard SIP phones2
  • Roaming user function
    • Enables individual users to log on and off at different telephones
    • Personal caller lists can be transferred to different workplaces
  • Centrally stored caller lists
    • User-specific caller lists are stored centrally in the system
    • Stored lists are available when a user logs on via the telephone
    • Access only possible via the user
  • Logging in and logging out a user via a telephone by PIN dial-in
  • Registration of max. 750 terminals possible

SIP convenience features for standard SIP phones

  • SIP-BLF, Busy Lamp Field acc. to RFC 4235
  • SIP-MWI (Message Waiting Indication), monitoring of the central voicemail and fax boxes acc. to RFC 3842
  • Pickup pre-check3

Communication platforms

  • Up to 10 conference rooms with 20 internal participants each (audio)
  • Up to 100 channels can be assigned simultaneously across all conference rooms

Central address books

  • 2,000 contacts
  • Separate address books for departments and multi-company operation
  • Import of VCF and CSV files
  • Address book provisioning via LDAP

VoIP telephony

  • Call deflection
  • Call forwarding on busy (CFB), no reply (CFNR), unconditional (CFU) at carrier trunk, configuration dependent
  • Transfer of customer-specific calling number information with outgoing calls (CLIP no screening)
  • SIP compliant with RFC 3261
  • VoIP point-to-multipoint and point-to-point connection (SIP trunking)
  • MSNs in SIP-Trunk simultaneously
  • Integration of external extensions (information on the location of the telephone is taken into account in an emergency call) and mobile clients
  • VoIP-Codecs: G.711, G.722, G.729
  • High voice quality through optimised echo cancellation and wideband audio with G.722
  • Encryption of signalling/signalling (SIPS) and voice data (SRTP) for internal calls
  • Compatible to standard SIP telephones
  • Support of soft phones

Voicemail and fax

  • Message and fax forwarding via e-mail
  • Remote access of the voicemail boxes incl. voice guidance
  • Call acceptance and individual announcements depending on calling number, time and call type
  • Substitute function
  • Up to 250 fax mailboxes, each with 500 messages per box
  • Up to 250 voicemail boxes, each with 500 messages per box
  • Maximum 32 channels can be used for voicemail and fax

UCC functions

  • Call journal
  • Instant messaging for a better sharing of information
  • Platform independent (Windows, Mac, iOS, Android)
  • Presence management with automatic status detection
  • Call setup and ending via the PC, incl. Outlook plug-in
  • Softphone-functions for Windows, Android und iOS
  • Up to 250 users can be licensed

Software interfaces

  • Access address books via LDAP
  • Support of basic CTI function via action URLs5

Unlockable options

  • User licence: Activates all functions of the Soft PBX and is required for linking users to a device. One licence must be activated for each active/registered user on the system6
  • PBX Call Assist
1 Independent of the number of registered users in the system.
2 Supported for telephone models D-600/D-400/D-210/D-200/D-110/D-100 and WS-500S/M IP-DECT systems. Also partially supported are telephone models from other manufacturers such as Yealink and Snom
3 Is only supported for the telephone models D-400/D-600 and D-210/D-200 in operation with an extension.
4 Is supported for the telephone models D-600/D-400/D-210/D-200/D-110/D-100 from Auerswald
5 Applies to the telephone models D-600/D-400 as well as D-210/D-200/D-110/D-100
6 The licence can be used by several users ("floating"), provided that the total number of active users corresponds to the total number of licences in the system.

Trunk lines 1



VoIP channels (SIP acc. RFC 3261), point-to-multipoin / point-to-point connection (SIP trunking)

250 250

VoIP codecs

G.711, G.722 and G.729

User connection 1



VoIP subscribers

0 - 250 250

VoIP channels (SIP acc. RFC 3261)


0 - 250 250

internal VoIP codecs

G.711, G.722 and G.729

Voicemail and fax system



Voicemail channels

32 32

Fax channels

32 32

Voicemail boxes / fax boxes

250 250

Hardware characteristics



Form factor

1U 19" Rackmount Server


Intel® Xeon® E-2224 (3,4 GHz 4-Core 71W TDP)


8 GB DDR-4


SSD 240 GB SATA 6G Read Intensive

Power supply

internal PSU AC 230/120 V 50/60 Hz 290 W 80 PLUS PLATINUM

  • 1 Possibly depending on the configuration of the telephone system
  • 2 All VoIP channels are freely configurable between internal, external and dynamic

Delivery Scope

  • Base unit
  • Installation and setup guide


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Sales Configurator (SC)

- the easy way to the right system

Customer requirements for communication solutions are constantly increasing and with them the complexity and scalability of ITC systems. Project planning therefore takes up more and more time. Here, the free Sales Configurator offers a simple and fast solution. It gives you the opportunity to efficiently plan communication solutions and create project planning proposals.

Sales Configurator (SC)