A hybrid telephone switchboard with 28 universal card slots, which can be connected to modules with different connection options, can be flexibly designed according to needs.
- 4 digital extensions on the motherboard.
- Support of 5 IP extensions (MATRIX ETERNITY ME VoIP16 or VoIP32 card required).
- 28 universal card slots.
- A maximum of 516 connection options on optional cards.
- Main lines that can be connected: analog, GSM, VoIP, ISDN, E/M.
- Number of analog main lines: maximum 128.
- Number of BRI ISDN channels: maximum 64 (32 ports).
- Number of T1/E1/PRI ISDN channels: maximum 720 (24 ports).
- Number of E/M main lines: maximum 80.
- Supported GSM networks: GSM850, EGSM900, DCS1800, PCS1900.
- Number of GSM main lines: maximum 128.
- Number of supported VoIP trunks: maximum 32.
- Supported VoIP protocols: SIP v2, SDP, RT, (RFC2833).
- Support for analog and digital extensions.
- Number of digital extensions: maximum 124.
- Number of analogue extensions: maximum 1344.
- Support of hotel applications at substations.
- MATRIX EON series system telephones can be connected to digital extensions.
- PC-based system telephone (EONSOFT) and DSS console support on digital extensions.
- DTMF and Pulse dialing.
- Can be programmed with a computer, via a computer network (external RJ-45 connection).
- Built-in web server with graphical user interface.
- 2 RS-232, serial port for data query, SMDR service.
- External sound source input.
- Line audio output for voice calling systems.
- Built-in sound module.
- Number of conference calls with 21 participants: maximum 45.

Main line expansion cards:
- CO8 (8 analog main lines).
- CO16 (16 analog main lines).
- BRI4 (4 ISDN BRI trunks).
- E/M4 (4 main E/M lines).
- E/M8 (8 main E/M lines).
- T1E1PRI SINGLE (T1/E1/PRI trunk).
- T1E1PRI DUAL (2 T1/E1/PRI main lines).
- GSM4 (4 GSM main lines).
- GSM8 (8 GSM main lines).
- VoIP8 (8 VoIP channels).
- VoIP16 (16 VoIP channels).
- VoIP32 (32 VoIP channels).
Hybrid cards:
- CO8+SLT24 (8 analog main lines + 24 analog extensions).
- CO8+SLT16 (8 analog main lines + 16 analog extensions).
Extension cards:
- SLT8 (8 analog extensions).
- SLT16 (16 analog extensions).
- SLT32 (32 analog extensions).
- SLT48 (48 analog extensions).
- DKP8 (8 digital extensions).
- DKP16 (16 digital extensions).
- DKP32 (32 digital extensions).
Other, additional cards:
- VMS16 (voicemail card with 512 message boxes).
- CPU (processor board with communication ports and I/O)
- It can also be mounted on a wall, table or in a 19-inch rack cabinet.
- It does not include a power supply.
- Optional power supply card: MATRIX ETERNITY LE Card PS48VDC.
- Supply voltage: 48 VDC, +/-20%.
- Power requirement: 45W.
- Dimensions: 448.5 mm x 750 mm x 475 mm.
- Weight: 25 kg.
- CE, FCC certification.
- RoHS compliance.