5.3 Call Confirmation Types
These settings apply to the alarm, checking and error reporting calls.
Confirmation by pressing 1
Up to 4 phone numbers and a repetition count can be stored for calls to the control center.
2N® LiftIP 2.0 then tries to call the set numbers one by one. 2N® LiftIP 2.0 uses tone dialing (DTMF) as the most reliable confirmation method. The control center has to press the 
button on its phone (in the tone dialing mode) during manual call answering. If the called number is busy or unanswered within a timeout or unconfirmed, 2N® LiftIP 2.0 dials the next number in the sequence until it exhausts the preset count of attempts for all the numbers stored. Checking calls or failure reports are made equally, yet a separate set of 2 numbers can be used.
Evaluation of Dialing with Confirmation Situations
Situation | 2N® LiftIP 2.0 |
|---|---|
Call termination by the counterparty (Busy, Number not found, etc.) | Dials the next number immediately. |
Call | Waits for a timeout. |
Ringing | Waits for a timeout. |
DTMF character | Confirms the connection (“Connection confirmed"), mutes the announcement played and the call takes the maximum preset time (Maximum call time). |
| These digits are interpreted as control characters. |
Confirmation by Off-Hook
VOIP
- The call is confirmed after the voice message is played.
The called user does not have to press any button. Both the modes share a set of numbers and cycle counts and respond identically to situations during dialing.
Warning
- Make sure before using this mode that no VoiceMail box, fax machine or any other device that could answer the call before the preset ring count is installed on any of the numbers to be called. This would lead to automatic dialing termination.
CPC (Antenna and KONE)
Used wherever the counterparty is equipped with the required SW. When the line is answered, a DTMF string is sent. The lift identifies itself. The call is either switched to voice communication (alarm call) or confirmed automatically and terminated (checking call).
P100
Used wherever the counterparty is equipped with the required SW. When the line is answered, a DTMF character is sent. The lift identifies itself. The call is either switched to voice communication (alarm call) or confirmed automatically and terminated (checking call).
DTMF Protocol Auto Detection (CPC/P100)
When the DTMF string is sent, the lift identifies the protocol and responds accordingly.
Warning
- If, for example, a call is routed via GSM, 2N® LiftIP 2.0 may not detect the DTMF characters and identify the protocol.
- If this happens, we recommend that you change the CPC or P100 settings (3 or 5).
CPC (Antenna), P100 2N ext (for alarm calls only)
The protocols work as described in items 3 and 4 for CPC and item 5 for P100. The only difference is that the audio unit type is transmitted too. Used for alarm calls to the communicator only.