Cisco Cisco IPICS Release 2.1 Referencia técnica

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A radio descriptor is an .xml file that is 
used to control functions on a radio. It 
contains channel selectors (to change radio 
frequencies) and control tone sequences (to 
provide radio controls such as monitoring 
and scanning).

A tone descriptor is an .xml file that 
contains signals. Signals are associated with 
channels whether or not a radio is 
configured on the channels. Tone 
descriptors describe momentary signals 
that can be sent over-the-air on a selected 
frequency/channel or other devices.

Cisco IPICS allows you to create and/or 
modify existing radio and tone descriptor 
files in Cisco IPICS. This functionality can 
be useful, for example, if you want to add 
controls or signals, or change the duration 
of a tone.

The following guidelines apply to 
configuring radio and tone descriptor .xml 
file entries:

For channel selectors and radio control 
functions (both stateful and simple) 
Cisco IPICS supports only RFC 2833 
tone entries.

You cannot enter more than six 
consecutive RFC 2833 tones in a tone 
control sequence. 

For signals, Cisco IPICS supports both 
RFC 2833 tone and RFC 2833 event 
(DTMF) commands.

For tone signaling, you can enter more 
than six consecutive RFC 2833 tones 
only if the sixth tone event is separated 
by a pause entry (such as one ms) or a 
DTMF digit entry. Pauses are defined by 
a tone with a frequency of zero, as 
shown in the following example:
<Rfc2833Tone db="0"frequency="0" 
duration="40" /> 

There is no limit to the number of 
DTMF entries that are allowed in a 
signaling tone sequence.

When you enter DTMF digits, be 

sure to configure a delay between the digits, 
as required by the local specifications. Most 
U.S. specifications require an interdigit 
delay of at least 40 ms.

For detailed information about the Cisco IP 
Interoperability and Collaboration System 
(Cisco IPICS), and for additional 
information about radio and tone 
descriptor files, refer to the 

Refer to the following URL for the 
complete Cisco IPICS documentation set: