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The PBX Node object is used to define the node hierachy of the PBX objects. The following configuration parameter have special meaning in the context of a PBX Node object



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


The Number of the Node object defines the prefix of the Node. A Node 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

For Nodes for which a PBX is assigned, the PBX to which this PBX registers is configured here. For the PBX of the Master PBX this PBX itself must be configured (root links to itself). For example if the Master is configured on Node 'headquarters', which means the PBX Name of the master is 'headquarters', the Node object for this node uses the Name 'headquarters' as well and the Parent PBX of this object is configured to 'headquarters' also.

For nodes without PBX 'root' should be configured as Parent PBX.

This way a registration tree is configured. This registration tree is independent of the numbering node tree.


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 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.

Number Mapping

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 a 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.


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).

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