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elmeg CS290

ISDN system telephone for standard working environments

  • Alphanumeric, 2-line display
  • 5 free programmable keys with 2-colour LEDs
  • 3 softkeys and 10 function keys
  • System features e.g. systemspec. phone book, busy lamp panel
  • Separate headset jack with easy controlling via F-key

elmeg CS290

The CS290 is an ISDN system telephone (centralized telephone book, busy light feature, team/line keys, etc.) for use with elmeg telephone systems. Separate versions are available for ISDN and Up0 lines.

Product description

Teldat has set new cost/benefit ratio standards for ISDN system telephones with the elmeg CS290. For a price that is only slightly above that for a standard ISDN telephone, these system performance features offer you professional and convenient additional functions.

The elmeg CS290 will win you over too, thanks to its elegance and ergonomic benefits: Menu navigation using three softkeys and alphanumeric display makes using this system child's play.

Five freely programmable keys with LEDs, some of them in two colors, indicate the status of important functions at a glance. These keys can also be used as line keys, as is the case with the "bigger" systems, for call forwarding, for headset and team functions, for using an external VoiceMail system, or for assigning MSNs.

The adjustable device console ensures optimal viewing from any angle. An especially strong ringing LED signals incoming calls clearly and visibly.

The direct alphanumerical access to the central telephone directory of the PABX supports you in your central contact data management tasks for workgroups and teams - if phone numbers change, all employees immediately have access to the new direct dialing numbers.

A caller list for ten callers, redialing of the last five numbers dialed and an individual VIP memory for ten more entries gives you a touch of convenience in your day-to-day business routine.


Text messaging (SMS) across fixed-line networks* is pure joy with the elmeg CS290: Functions to save, select the recipient, answering, etc. combined with the ergonomic keys provide previously unknown levels of convenience and ease.

An integrated headset jack allows for flexible and easy headphone use. The headset can be controlled with two programmable keys – "Headset on/off" and – something that is perfect for call centers, for example – with the "Automatic call pick-up" function.

The elmeg CS290 also offers direct control of headsets with the signal LED integrated into the microphone earpiece (e.g. Plantronics F142 N "Firefly" or Silicomp "Orbit NC“) – it is thus immediately visible whether a call is in progress or not.

*) only with PABX systems elmeg T444, elmeg, elmeg D@VOS-44.dsl, elmeg Firmware version 5.4 or later, and elmeg ICT


The price/performance reference for ISDN system telephony

The perfect system telephone for standard workstations: Greatest ease of use with 3 softkeys, alphanumeric display and 5 freely programmable function keys. Optimal readability of the display thanks to the adjustable base. Ideal for frequent phone users; a dedicated jack for using headsets is already installed.

Useful in loud environments: Each call is indicated acoustically by a particularly powerful speaker and also optically by a bright ringing LED

System Highlights


  • Systemspecific alphanumeric telephone directory
  • Transmission of text messages (UUS1, SMS)
  • Programmable function keys
  • Busy lamp panel with extension / line buttons
  • Receiving messages
  • Announcement
  • Voice mail button for external Voice Mail Systems
  • Login key for team member-ship
  • Headset button
  • Autom. call pick-up function key (for use with headsets)
  • Day/ night mode
  • Team logon/off

User Interface

The tried-and-tested menu prompting provided by elmeg system telephones of the 300 series forms the basis for this. A new feature is large, easy-to-press function keys with luminous glass fibers integrated into the key bodies for even more transparency. Bicolor LEDs are also provided for some keys. This is to indicate the status at both function levels..

The elmeg CS290 supports system features with the following pbx-systems:


  • CS290: elmeg (Firmware version 5.5 or higher)
  • CS290: elmeg D@VOS-44.dsl (Firmware version 1.0 or higher)
  • CS290: elmeg (firmware version 5.5 or higher)
  • CS290: elmeg C46xe *
  • CS290: elmeg C46xe-rack *
  • CS290: elmeg C88m Up0 * (firmware version 5.4 or higher)
  • CS290: elmeg ICT-family

*) no transmission of text messages (SMS) possible.

We recommend using headsets from Plantronics with a U10P-S connecting cable and from GN-Netcom.
Special feature:
elmeg CS290 supports the On indica-tor in the Firefly F142N headset. This is plugged directly into the headset jack of the elmeg CS290 (U10P-S connecting cable notrequired)..

A detailed table listing all of the performance features is available on the Internet for downloading at
elmeg CS290 is available in the colors black-blue.

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