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There are also other versions of this article available: Reference8 | Reference9 | Reference10 | Reference13r1 (this version)

The PBX object is used to define another PBX which can register. With each PBX object a Node for this PBX is configured as well. The following configuration parameter have special meaning in the context of a PBX object

See Reference13r1:PBX/Objects#General_Object_Properties for generic object properties.


The Name of the PBX object defines the name of the PBX. A Name must be configured for a PBX object otherwise it cannot be used.


The Number of the PBX object defines the prefix of the Node generated for this PBX. A PBX object without Number (prefix) is invalid. This prefix must be unique within the node of the object as it is with the Number configured for other objects.

Parent Node

A hierachy of Nodes can be configured. The Top-Level nodes are configured with a Parent Node of 'root'. By configuring another node here, the new node is defined as subnode of this Parent Node.

The node tree root is called root always: that is, you cannot have another node be the root. In particular, all parent node links must ultimately end up in the node called root.

Parent PBX

The PBX to which this PBX can register. For the PBX of the Master PBX this PBX itself must be configured. For example if the Master is configured on Node 'headquarters', which means the PBX Name of the master is 'headquarters', the PBX object uses the Name 'headquarters' as well and the Parent PBX of this object is configured to 'headquarters' also.


This password is used for the authentication of the slave PBX registration

Busy on ... Calls

This parameter can be used to limit the calls to/from a slave PBX. A CFNR configured at the Node Object can be used to redirect a call if the number of active calls to/from the slave PBX is equal to or exceeding this value.


The escape digits can be dialed to call the next higher level of the numbering node. These escape digits are used the same way as prefixes for the national/international network in the public telephone network. If escape digits are defined no higher nodes can be called from this node without the escape digits. If there is a conflict between the escape digits and the numbers of other objects within this node, the escape digits have precedence.


A checkmark indicates that a dialtone should be played if the escape is dialed without any further digits. To play the dialtone a call is initiated to the object configured on the PBX/General page.

Reroute Destinations

For calls which have this node as destination, call rerouting can be configured for some conditions. The rerouting confgured here takes precedence over rerouting, which may be configured at a Trunk Object thru which the call is coming in. Any call forwarding configured at a user takes precedence over this rerouting. The rerouting is only executed for calls originating from a different node.

A configured No is always interpreted in the context of this node.

Incomplete Number

If the dialed number is incomplete the call is rerouted to the configured Name/Number. There is a fixed timeout of 4s to determine that no more digits are dialed.

No Response

The CFNR timeout configured for the PBX or for the dialed user is used to determine that the user does not answer. In this case the call is rerouted to the configured Name/No.

Not to be called

This checkmark can be used for e.164 scenarios to configure nodes, which shadow public network nodes which are not to be called directly. For example in Switzerland there are area codes, with escape 0, but the subscriber nodes within these area codes can not be called. So to make a call within an area code to another subscriber, always the escape and area code have to be dialled. To reflect this, the flag "Not to be called" can be set at the subscriber nodes.

The PBX still allows to call other subscribers directly, but the calling party number is adjusted to include the area code.

Number Mapping (International, National, Subscriber Prefix)

For dialed International, National or subscriber numbers prefixes can be configured which are added to the called party number. The type of number is changed to 'Unknown'. This useful for example if an directory is used where all numbers are stored in the international format (e.g. +49 7031 ...). In this case a prefix can be configured which includes the Trunk, so that the call is sent to the public network.

Area Code, Country Code

This information is provided thru the EpSignal and PbxSignal Api to Apps. The Phone and the Softphone App use this information for number normalization.


In this tab it shows how many licenses this corresponding slave PBX has in use (if Central licensing concept is in use).


CFB, CFNR can be used for alternate routing to this PBX in case the maximum number of calls defined by busy on ... calls is reached (CFB) or if the registration of the slave PBX is down (CFNR).

The destination of the call forward should address the Trunk Objekt to which this call should be forwarded, as if dialed from this object, if this object was a normal User/Gateway object (this is the rule which applies for all call-forwards configured at an object).

When the PBX executes the call forward it appends to the configured number the number which can be used to dial the called object from the node defined by this PBX object. If for example the called object is located in the node of this PBX object it is just the number of this object.