Elevator alarm to external phone with voice identifcation

Forwarding of Call Request to external telephone

This article describes how elevator alarms can be routed to external telephones. When the telephone operator answers the call, the location of the alarm will be played as a voice message. The operator must acknowledge the alarm by pressing a digit, and two-way voice communication is established between the operator and the elevator.

If there are multiple alarms at the same time, the system will put the calls in queue, and set up calls one by one to the telephone as soon as the line becomes free. When an elevator call is put in queue, a message "Your call is registered, please wait" will be played to the elevator. The actual phrasing of the message can be modified.

In the configuration below there is a possibility of defining up to 6 different telephone numbers. If the first number is not acknowleding the call within a preset time, the second number will be called, and so on, until the call is acknowledged.

The call to the telephone will be activated only if there is a free telephone line. If all available lines are busy, the system will retry every 5 seconds until a line is free. If there are several Call Requests at the same time, they will be queued in the AlphaCom and handled one by one. The macro %tin (Trunk In Use) is used to check if there are any free lines.

The SIP Gateway must be AudioCodes MP114/118, as the functionality depends on certain properties of this gateway. The SIP gateway should be configured as described in the relevant AlphaWiki articles.

Software requirement: AMC 11.2.3.3 or newer.

Manual Call Forwarding

The elevator station must be configured to dial an event trigger, which in turn sends a Call Request to a dummy station. The dummy number can be any station directory number in the exchange that is not in use. In this article 5152 on physical 552 is used as an example.

Bilde Elevator DAK.

In AlphaPro, Exchange & System -> Events, press Insert to add a new event.

Event 1: This event will start a 1 second timer when the dummy station receives a call request.

Event Owner:	The Dummy Station
Event type:	10 - Received Mail
Subevent:	0
When change to:	ON
When related to:	All
Action:	$ST L%1.dir W10 %2.ref

Event 2: When the timer expires, and if there is a free phone line, the calling station will be connected to the SIP gateway (i.e. dial "0") and the phone number 12345678 will be dialled.

If there are no free lines the timer is restarted, and a new attempt will be made 5 seconds later.

Event Owner:	The Dummy Station
Event type:	21 - Event Timeout
Subevent:	0
When change to:	ON
When related to:	All
Action:	IF %op(%tin(100),>=,1) (If the line is already in use on SIP Trunk node 100...)
	$ST L%1.dir W50 %2.ref (...then try again in 5 seconds by restarting the timer)
	STOP
	ENDIF (If the line is free...)
	$PD %2.ref "0W12345678" (...dial 0, then 1 sec pause, then dial 12345678)
	$CANM %2.ref L%1.dir (Delete the call request from the dummy station)

About the expression "IF %op(%tin(100),>=,1)":

• 100 = the node number of the SIP Trunk. Change if required.
• 1 = There is one phone line connected to the SIP Gateway. If multiple lines are connected to the MP114/118 gateway, you need to change this number accordingly.

In the expression "$PD %2.ref "0W12345678"" substitute 12345678 with the wanted phone number.