COMtrexx® Next

The smallest COMtrexx appliance with the full range of Soft PBX features. Future-proof COMtrexx for expansion stages up to 40 users.

Attractively priced soft PBX from the smallest expansion levels upwards

Compact, silent and extremely power-saving

Up to 40 users with a maximum of 200 devices and 40 simultaneous calls

Secure All-IP solution with dashboard platform

Mobile Work with COMfortel SoftPhone 2

Your advantages in detail

Maximum productivity and minimum costs with extensions up to 40 users. The compact COMtrexx Next makes it possible! The All-IP solution offers the full range of features of a COMtrexx Soft PBX in pocket format. The mini appliance is noiseless due to passive cooling and extremely energy-saving with a consumption of significantly less than 10 watts. A professional, future-proof and modern communication system that is guaranteed to fit in any environment.

The most important facts:

Up to a maximum of 40 users can be licensed and 200 devices (with up to 5 devices per user)
Cost-effective options of the maximum number of users as a package (max. 5/10/20/30/40 users)
Modern and user-friendly COMtrexx user interface
Comfort functions such as CTI, MWI, BLF with the COMfortel D-Series
integrated conference option with up to 10 conference rooms that can be used simultaneously
roaming user function for setting up mobile workplaces (alternating workplaces)
central caller lists
Support of the COMtrexx Control Center for remote monitoring / configuration

Mobile working is easily and securely supported by optional soft clients for computers, tablets and smartphones. COMfortel SoftPhone is available for the basic voice and chat functions. Those who require more extensive UC functions and seamless integration into business processes will find the optimal UCC solution with PBX Call Assist.

Compatible products

Features & technical data

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

Comfort Features

Up to 40 parallel calls possible
Up to 40 users licensable
Automatic control centre (maximum 10 configurable)
Presence status with the COMfortel D-Series
Update of the COMfortel D-Series via proxy routing even without https access

Barred/approved numbers, 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 or from mobile app COMfortel SoftPhone 2)
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 phones¹
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
Setting up groups
- 64 call groups
- up to 40 members per group
- Fixed channels can be reserved for group calls
Logging in and logging out a user via a telephone by PIN dial-in

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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-check²

Communication platforms

Up to 30 internal channels can be assigned simultaneously across all conference rooms
Up to 10 conference rooms with 10 internal participants each (audio)

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

VoIP point-to-multipoint and point-to-point connection (SIP trunking)
Call forwarding on busy (CFB), no reply (CFNR), unconditional (CFU) at carrier trunk, configuration dependent
Call deflection
Transfer of customer-specific calling number information with outgoing calls (CLIP no screening)
High voice quality through optimised echo cancellation and wideband audio with G.722

Compatible to standard SIP telephones
SIP compliant with RFC 3261
Reservation of speech channels
Support of soft clients and COMfortel Softphone 2
VoIP-Codecs: G.711, G.722
Dynamic internal/external VoIP channels
Encryption of signalling/signalling (SIPS) and voice data (SRTP) for internal calls
Integration of external extensions (information on the location of the telephone is taken into account in an emergency call) and mobile clients

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Voicemail and fax

Substitute function
Call acceptance and individual announcements depending on calling number, time and call type
Remote access of the voicemail boxes incl. voice guidance
Message and fax forwarding via e-mail
Up to 40 fax mailboxes, each with 500 messages per box

Up to 40 voicemail boxes, each with 500 messages per box
Maximum 3/3 channels can be used for voicemail/fax

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UCC functions

Call journal
Instant messaging for a better sharing of information
Contact data for local users and out of external data bases
Platform independent (Windows, macOS, iOS, Android)
Presence management with automatic status detection

Alignment with MS Teams
Call setup and ending via the PC, incl. Outlook plug-in
Screen sharing for convinient cooperation
Softphone-functions for Windows, Android und iOS
Up to 40 users can be licensed

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COMfortel SoftPhone 2

Softclient for the base functionality SIP telefony and messaging
Secure and simple PBX connection from anywhere via Auerswald cloud service
Softphone for Windows, macOS, iOS and Android

Software interfaces

LAN-TAPI³
Access COMtrexx address books via LDAP
Access to external LDAP servers via LDAP proxy
Support of basic CTI function via action URLs³

Installation and maintenance

Support of the COMtrexx Control Centre for secure remote control & backup management

Unlockable options

User licence: Activates all functions of the Soft PBX and is required for linking users to a device. One license must be assigned per active user with at least one terminal device.⁴
PBX Call Assist
System activation (necessary for operation of the system)

Note

COMtrexx Next licence containers up to a maximum of 40 users are offered, each of which activates a fixed number of simultaneous floating users. If more users are required for a COMtrexx Next system, the already installed licence container must be replaced by a larger one. An extension is not possible. COMtrexx Next licence containers are not compatible with the COMtrexx VM, Advanced and Business.

¹ 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
² Is only supported for the telephone models D-400/D-600 and D-210/D-200 in operation with an extension.
³ Is supported for the telephone models D-600/D-400/D-210/D-200/D-110/D-100 from Auerswald
⁴ 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	Base	Max
VoIP channels (SIP acc. RFC 3261), point-to-multipoint/point-to-point connection (SIP trunking)	40	40
VoIP codecs	G.711 and G.722

Trunk lines

Base

Max

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

VoIP codecs

G.711 and G.722

User connection	Base	Max
VoIP subscribers	40	40
VoIP channels (SIP acc. RFC 3261) ¹	40	40
VoIP codecs internal	G.711 and G.722

User connection

Base

Max

VoIP subscribers

VoIP channels (SIP acc. RFC 3261)

VoIP codecs internal

G.711 and G.722

Voicemail and fax system	Base	Max
Voicemail channels	3	3
Fax channels	3	3
Voicemail boxes / fax boxes ¹	2/1	40/40
Fax standard	T.30/T.38 acc. to ITU-T

Additional connections	Base	Max
Ethernet port 10/100 Base-T (10/100 MBit/s, twisted pair)	1

Additional connections

Base

Max

Ethernet port 10/100 Base-T (10/100 MBit/s, twisted pair)

Technical data	Base	Max
Operating voltage	Wall-mounted power supply 100–240 V AC, 50/60 Hz, 0.2 A
Output values of the wall-mounted power supply	5 V=2 A
Power consumption	2.3 to 4.3 W
Housing	plastic
Dimensions (w x h x d)	103 mm x 23 mm x 103 mm
Weight (without power supply)	approx. 165 g
Temperature	Operation: 0 to 40 °C, storage: -10 to +70 °C, non-condensing
Compliance	CE
Supported operating systems	Windows 10/11, macOS, Linux