Cpl Reference; Cpl Address-Switch Node - Cisco TelePresence Administrator's Manual

CPL reference

Call Processing Language (CPL) is an XML-based language for defining call handling. This section gives
details of the VCS's implementation of the CPL language and should be read in conjunction with the CPL
standard RFC 3880.
The VCS has many powerful inbuilt transform features so CPL should be required only if advanced call
handling rules are required.
The VCS supports most of the CPL standard along with some TANDBERG-defined extensions. It does not
support the top level actions <incoming> and <outgoing> as described in RFC 3880. Instead it supports
a single section of CPL within a <taa:routed> section.
When Call Policy is implemented by uploading a CPL script to the VCS, the script is checked against an
XML schema to verify the syntax. There are two schemas - one for the basic CPL specification and one for
the TANDBERG extensions. Both of these schemas can be
validate your script before uploading to the VCS.
The following example shows the correct use of namespaces to make the syntax acceptable:
<?xml version="1.0" encoding="UTF-8" ?>
<cpl xmlns="urn:ietf:params:xml:ns:cpl"
xmlns:taa="http://www.tandberg.net/cpl-extensions"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:ietf:params:xml:ns:cpl cpl.xsd">
<taa:routed>
<address-switch field="destination">
<address is="reception@example.com">
<proxy/>
</address>
</address-switch>
</taa:routed>
</cpl>

CPL address-switch node

The address-switch node allows the script to run different actions based on the source or destination
aliases of the call. It specifies which fields to match, and then a list of address nodes contains the possible
matches and their associated actions.
The address-switch has two node parameters: field and subfield.
address
The address construct is used within an address-switch to specify addresses to match. It supports the
use of regular expressions.
Valid values are:
is=string Selected field and subfield exactly match the given string.
contains=string Selected field and subfield contain the given string. Note that the CPL standard only allows
for this matching on the display subfield; however the VCS allows it on any type of field.
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