Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
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
details of the VCS’s implementation of the CPL language and should be read in conjunction with the CPL
standard
.
The VCS has many powerful inbuilt transform features so CPL should be required only if advanced call
handling rules are required.
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.
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
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>
Source and destination address formats
When the descriptions in this section refer to the source or destination aliases of a call, this means all
supported address formats (URIs, IP addresses, E.164 aliases and so on).
supported address formats (URIs, IP addresses, E.164 aliases and so on).
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.
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
use of
Valid values are:
Cisco TelePresence Video Communication Server Administrator Guide (X8.2)
Page 391 of 542
Reference material
CPL reference