2 main lines/8 extensions, 3 voice channels, analog mini-switchboard, which includes an intercom extension with door opening function as a basic function.
After entering the service code from extension 1, the control panel can be programmed with DTMF codes:
- Night/day mode.
- Ring an incoming call.
- Call restriction.
- Flash time programming.
- Assignment of doorphone push buttons to extensions.
- Gate opening time.
- Extensions included in a circular call.
- Hot wire.

Functions available from extensions: Extension-to-extension call, extension-to-main line call, call transfer, call pickup, circular call, reception of intercom notification, dedicated intercom call, door opening.

The caller ID (IP) card can be purchased as an option, and if used, a phone number display device can be placed on the extensions, which shows the phone numbers and times of incoming calls.

Specifications:
Number of main lines: 2.
Number of extensions: 8 + 2 intercoms.
Connections: Extensions and the main line: RJ11, the intercom and door opener: terminal block.
Doorphone outdoor: PRODUTEL SESÁM 1-8 Push-button.
Dialing mode: TONE.
Programming: on extension 1, with DTMF codes.
Program storage: EEPROM.
Power supply: 220/240V, 50/60Hz.
Consumption: 4 - 6W.
Main line impedance: 600 Ohm.
Auxiliary line impedance: 600 Ohm.
Telephone cable resistance: max 1450 Ohm.
Telephone resistance on the side: max 400 Ohm.
Internal dial tone frequency: 400 Hz +-10%.
Dial tone period: continuous.
Busy tone: 320 msec signal - 320 msec pause.
Indication of entry into service mode: 5 short beeps and slow flashing of the yellow LED.
Program code acceptance sound: 5 short beeps, then a dial tone to continue.
Faulty program code indication: 6 long beeps, followed by a dial tone to continue.
Ringing voltage: 60 V+-10%/ 50 Hz.
Ringing period for extension-extension calls: 800 msec signal / 200 msec pause / 400 msec signal / 2600 msec pause, continuously repeated.
Ringing period in the case of a main line incoming call: first ring 300 msec signal / 3 sec pause, then 1 sec signal / 3 sec pause continuously repeated.
Ringing period for doorphone 1 signal: 800 msec signal / 800 msec pause repeated 10 times.
Ringing period for doorphone 2 signal: 800 msec signal / 200 msec pause, 400 msec signal / 2.6 sec pause repeated 10 times.