Thanks to the extremely careful design and high-quality components, it is a new generation telephone exchange with reliable operation and extended services.

- 4 main line inputs.
- 16 extension outputs.
- Fixed construction, cannot be expanded.
- RJ11 trunk and extension connections.
- LED status display (main lines and supply voltage).
- Operating principle with spatial distribution.
- Built-in intercom adapter.
- Two doorphone outdoor units can be connected.
- The intercom takes the place of an extension station.
- Compatible doorphone outdoor units: EXCELLTEL CDX-101, CDX-102 and CDX-103.
- Normally open (NO), control relay contact.
- Uninterrupted power supply can be provided from an external battery (optional).
- Programming from extensions 1-4, tone mode telephones.
- In the event of a power cut, switch the main line directly to extensions 1 and 2.
- Main line and extension call number display.
- Automatic operator, selection function.
- 3-segment OGM with 20 seconds of recordable message per segment.
- Fax tone detection.
- Operator extension can be set.
- Manual day/night switching.
- Programmable (1-4) digit extension numbers.
- Trunk and extension groups.
- Enable or disable main line accesses.
- Intelligent route selection function (LCR).
- Three-passenger conference call (between main line and two extensions).
- Control of outgoing calls per extension.
- Call duration limitation.
- Automatic callback when busy.
- On call.
- Music on hold (from internal or external audio source).
- 11 different internal call-on-hold music can be set.
- Call forwarding.
- Call pickup.
- Call forwarding.
- Do not disturb feature.
- Adjustable Flash time.
- Distortion: less than 10%.
- Cross-talk attenuation: greater than 70dB.
- Transmission loss: 0.37dB.
- Ring voltage: 70VAC +/-10%, 50Hz.
- Plastic housing.
- It can be placed both horizontally and vertically.
- Supply voltage: 230VAC/50Hz.
- Power requirement: 20VA.
- Operating temperature: 0°C - 45°C.
- Operating humidity: 20% - 80%.
- Dimensions: 327mm x 217mm x 60mm.
- CE certification.