Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.

This FAQ describes P100 protocol which is implemented in 2N® Lift1 and 2N® Lift8. Below you can find how the signalisation works and description of the alarms.

Packet structure

Below you can find table which explains how the packet of P100 protocol looks like and what can be the values for each part of the packet.


Checksum: 2 characters.
The checksum is calculated by summing the alarm type, the data length and
all the characters in the data field. The resulting sum is converted to
hexadecimal format and inserted as a 2 character checksum (00h - FFh).


Signalling is done via DTMF. Standard tone length 100 ms +/- 5 ms, pause 100 ms +/- 5 ms. For the 2N® Lift1 this can be adjusted in a range of 60 – 140 ms. The parameter for the adjustment is displayed on the screen below.

Tones used in the data packet

These are values which can be in the data packet.


14          = DTMF *
15          = DTMF #


Control tones at P100 signalling

Below you can find which tone signalize which status.

Start = DTMF D
Acknowledge = DTMF A
Retransmit = DTMF C

Type of alarms

Alarm with a voice communication


* represents the status - battery out of order, missing battery, or battery cannot power
the defivece device for 1h long call
** applicable only for 2N®Lift8