Aastra Telecom 41-001343-02 User Manual

41-001343-02 REV04 – 05.2014

Use the following procedures to configure the ring tone via speaker during active calls feature.

Administrators can configure the IP phones to play a congestion/fast busy tone instead of a dial tone when the phone is in 
a “No Service” state. This feature allows visually impaired persons the ability to discern whether or not the phone is in serv-
ice and can be used to send/receive calls.

The configuration parameter “no service congestion tone” allows administrators the ability to enable this accessibility 
feature. When enabled, the congestion tone will replace the conventional dial tone when the handset is off hook, a head-
set is employed, or the speakerphone is engaged. The congestion tone’s frequency/pattern is based on the respective 
phone’s configured tone set. Additionally, the congestion tone is played on a per-line basis whereby only the specific lines 
that are without service are affected.

With consideration to scenarios where a dial tone should be played even if the phone is in a “No Service” state (e.g. scenar-
ios where the proxy may still accept INVITEs from the phone even if unregistered), the “no service congestion tone” 
parameter has been programmed as disabled by default.

6735i

6737i

6739i

6753i

6755i

6757i and 6757i CT

6863i

6865i

6867i

• The “ring audibly enable” parameter is disabled by default.
• This feature is not supported when utilizing the headset audio mode.
• With this feature enabled and when the phone’s speaker is playing the incoming call’s ring tone, call-waiting tones 

will not be played.

For specific parameters you can set in the configuration files, see Appendix A, the section, 

If the phone or individual lines are configured to have no registration by intent (e.g. if the Registrar is set to 0.0.0.0) ena-
bling the “no service congestion tone” parameter will have no effect and the default dial tone will be played.