Distinctive ring is used to identify internal and external incoming
calls. An internal call is defined as a call originating from any
Cisco Unified IP phone that is registered in Cisco Unified CME or is routed
through the local FXS port.
In Cisco CME 3.4 and earlier versions, the standard ring pattern is
generated for all calls to local SCCP endpoints. In Cisco Unified CME 4.0, the
following distinctive ring features are supported for SCCP endpoints:
Specify one of three ring patterns to be used for all types of
incoming calls to a particular directory number, on all phones on which the
directory number appears. If a phone is already in use, an incoming call is
presented as a call-waiting call and uses a distinctive call-waiting beep.
Specify whether the distinctive ring is used only if the incoming
called number matches the primary or secondary number defined for the
ephone-dn. If no secondary number is defined for the ephone-dn, the secondary
ring option has no effect.
Associate a feature ring pattern with a specific button on a phone
so that different phones that share the same directory number can use a
different ring style.
For local SIP endpoints, the type of ring sound requested is signaled to
the phone using an alert-info signal. If distinctive ringing is enabled,
Cisco Unified CME generates the alert-info for incoming calls from any phone
that is not registered in Cisco Unified CME, to the local endpoint. Alert-info
from an incoming leg can be relayed to an outgoing leg with the internally
generated alert-info taking precedence.
Cisco Unified IP phones use the standard Telcordia Technologies
distinctive ring types.
Cisco Unified IP
Phones have two default ring types: Chirp1 and Chirp2. Cisco Unified CME also
supports customized ringtones using pulse code modulation (PCM) files.
An XML file called
RingList.xml specifies the ringtone options available for the default ring on
an IP phone registered to Cisco Unified CME. An XML file called
DistinctiveRingList.xml specifies the ringtones available on each individual
line appearance on an IP phone registered to Cisco Unified CME.
On-hold indicator is
an optional feature that generates a ring burst on idle IP phones that have
placed a call on hold. An option is available to generate call-waiting beeps
for occupied phones that have placed calls on hold. This feature is disabled by
default. For configuration information, see
Configure On-Hold Indicator.
LED color display
for hold state, also known as I-Hold, is supported in Cisco Unified CME 4.0(2)
and later versions. The I-Hold feature provides a visual indicator for
distinguishing a local hold from a remote hold on shared lines on supported
phones, such as the Cisco Unified IP Phone 7931G. This feature requires no
RingList.xml and DistinctiveRingList.xml files using a text editor.
RingList.xml and DistinctiveRingList.xml files contain a list of phone ring
types. Each file shows the PCM file used for each ring type and the text that
is displayed on the Ring Type menu on a Cisco Unified IP Phone for each ring.
Example for Configuring Distinctive Ringing for Internal Calls
The following example sets distinctive ringing for internal calls on
ephone-dn 34 number 2333 ring internal
Example for Configuring On-Hold Indicator
In the following example, extension 2555 is configured to not forward
local calls that are internal to the Cisco Unified CME system. Extension 2222
dials extension 2555. If 2555 is busy, the caller hears a busy tone. If 2555
does not answer, the caller hears ringback. The internal call is not forwarded.
ephone-dn 25 number 2555 no forward local-calls call-forward busy 2244 call-forward noan 2244 timeout 45
Information for Ringtones
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1 Feature
Information for Ringtones
Cisco Unified CME Version
ringtone choices for all incoming calls to an individual directory number, for
all SCCP phones on which the directory number appears.
the alert-info for incoming calls from any phone that is not registered in
Cisco Unified CME, to local SIP endpoints.
Ringtones feature was introduced.
LED color display for hold state to provide visual indicator for distinguishing
a local hold from a remote hold on shared lines on supported phones, such as
the Cisco Unified IP Phone 7931G.