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How to remove the ringback tone for calls landing to Auto Attendant SIP trunk

Applies to:

  • Imagicle Advanced Queuing on Cisco UCM

  • Imagicle Auto Attendant on Cisco UCM

Description:

Cisco UCM plays a ringback tone for incoming calls to Imagicle services. To remove the ringback tone, a SIP Normalization Script can be implemented. The script processes any SIP messages coming from AdvQue or AutoAtt and discards any “180 Ringing” signaling.

How-to:

  1. Log in into Cisco UCM

  2. Create SIP Normalization script

    1. Go to Device -> device settings -> SIP normalization script

    2. Click AddNew

    3. Click Import File and upload below file:

DropIncoming180Ringing.lua

d. Enter a name, such as “DiscardIncoming180Ringing”

e. Click Save

  1. Go to  Device -> Trunk

  2. Find and edit SIP Trunk for AdvQue

  3. Within “SIP Information” section, find “Normalization Script”

  4. Choose the script “DiscardIncoming180Ringing”

  5. Save and Reset trunk

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