Configuring regexp and callto parameters in cluster route module

This is an example on how to use cluster module to route the calls by setting parameters like regexp and callto.

Parameter regexp which is a regular expression that describes the node name match rule.

Parameter callto is used to forward the call to the target node.

Configuration parameters in cluster module

In clustering.conf file:

[general]
regexp=^[[:alnum:].-]\+$
callto=sip/sip:cluster/${called}@\0.dom.ain

In the above configuration suppose that:

• We are node node1
• A call comes in for number 87654321
• Routing returns cluster/node2/sip/sip:321@192.168.0.2;user=phone
• The prefix equals cluster/ but the node is not local. The node name node2 is found matching against the regexp so the callto is evaluated by replacing parameters and matched strings.
• The call is delivered to sip:cluster/321@node2.dom.ain
• On node2 the call can be routed using a regular expression as you can see below.

Configuration for routing the call

In regexroute.conf file:

[default]
^cluster/=${sip_x-callto};billid=${sip_x-billid}

See also

• Clustering Module
• Routing