Hi Zhang,
SCCP: Configuring Call-Waiting Indicator Tone
To specify the type of audible call-waiting indicator on a SCCP phone, perform the following steps. The default is for directory numbers to accept call interruptions, such as call waiting, and to issue a beep tone. Instead of the standard call waiting beep, you can enable a ring tone for call-waiting.
Restrictions
•The call-waiting ring option is not supported if the ephone-dn is configured with the no call-waiting beep accept command.
•If you configure a button to have a silent ring, you will not hear a call-waiting beep or call-waiting ring regardless of whether the ephone-dn associated with the button is configured to generate a call-waiting beep or call-waiting ring.
•The call-waiting beep volume cannot be adjusted through Cisco Unified CME for the Cisco Unified IP Phone 7902G, Cisco Unified IP Phone 7905G, Cisco Unified IP Phone 7912G, Cisco ATA-186, and Cisco ATA-188.
•The call-waiting ring option is not supported on the Cisco Unified IP Phone 7902G, Cisco Unified IP Phone 7905G, or Cisco Unified IP Phone 7912G.
SUMMARY STEPS
1. enable
2. configure terminal
3. ephone-dn dn-tag [dual-line]
4. call-waiting beep [accept | generate]
5. call-waiting ring
6. end
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmecover.html#wp1117436
Feature Ring (f)
A feature ring is a third type of ring cadence, in addition to the internal call and external call ring cadences. For example, an internal call in the United States rings for 2 seconds on and 4 seconds off (single-pulse ring), and an external call rings for 0.4 seconds on, 0.2 seconds off, 0.4 seconds on, and 0.2 seconds off (double-pulse ring). A feature ring is a triple-pulse ring. The purpose of associating a feature ring with a line button is to be able to identify from a distance a special line that is ringing on a multiline phone.
In Cisco CME 3.2.1 and later versions, DND can be blocked from phones with the feature-ring function. A feature ring is a triple-pulse ring, a type of ring cadence in addition to internal call and external call ring cadences. For example, an internal call in the United States rings for 2 seconds on and 4 seconds off (single-pulse ring), and an external call rings for 0.4 seconds on, 0.2 seconds off, 0.4 seconds on, and 0.2 seconds off (double-pulse ring).
The triple-pulse ring is used as an audio identifier for phone users. For example, each salesperson in a sales department could have an IP phone with a button sharing the same set of ephone-dns with the sales staff and another button for their private line for preferred customers. To help a salesperson identify an incoming call to his or her private line, the private line can be configured with the feature-ring function. You can disable the DND function on feature-ring lines. In the preceding example, salespeople could activate DND on their phones and still hear calls to their private lines.
SCCP: Blocking Do Not Disturb
To block DND on phones that have buttons configured for feature ringing, perform the following steps. DND is enabled by using the DND soft key on Cisco Unified IP phones that support soft keys.
SUMMARY STEPS
1. enable
2. configure terminal
3. ephone phone-tag
4. no dnd feature-ring
Example:
Router(config-ephone)# no dnd feature-ring
Allows phone buttons configured with the feature-ring option to ring when their IP phones are in do-not-disturb (DND) mode.
5. end
In the following configuration example, when DND is activated on ephone 1, button 1 will ring, but button 2 will not.
ephone 1
button 1f1
button 2o10,11
no dnd feature-ring
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmednd.html
Hope this helps!
Rob
