UniFi VoIP - How to Enable Intercom on UVP


This article provides you step-by-step instructions to enable Intercom mode on the UVP. 

Table of Contents

  1. Requirements
  2. How to Enable Intercom
  3. PBX Configuration Example


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- UVP App version 4.6.6 or greater

- PBX that supports Adding/Editing SIP Headers(Call-Info)

How to Enable Intercom

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Step 1: Tap the Vertical Ellipse ().

Step 2: Enter the Settings Menu.

Step 3: Tap the Call Settings Menu.

Step 4: Tap Incoming call action.

Step 5: Select Intercom.

Using the intercom option allows the user's phone to ring for inbound calls that are not supposed to be intercom calls.  If you do not require the use of the phone other than as an intercom.  Instead of selecting Intercom, you can select Auto-answer.  Selecting Auto-Answer does not require modifying the Call-Info SIP Header.

PBX Configuration Example

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I will use Asterisk in this example to configure the proper SIP headers for intercom.

For the extension, you wish to configure for intercom.  Add the following instruction to the inbound context.

exten => s,n,SIPAddHeader(Call-Info: answer-after=0) ;Intercom

Save the configuration file and reload the configurations on asterisk.

Dialing the extension the phone should now automatically answer the call on speakerphone.