What are the available auto-answering methods in Zoiper5?

Zoiper5 supports two types of auto-answering:

1. Manual Activation via Zoiper Settings

   • Users can enable auto-answering for all incoming calls through the Zoiper interface.

   • Navigate to: Settings → Calls → Enable the "Enable incoming call handling" option → Auto-answer → choose either "Instant auto-answer" or "Answer after(1-600sec.)"

   • If you choose the "Answer after..." option, you may set custom timeout for auto-answering from 1 to 600 seconds. The default value is 30 seconds.
     If you do not enable the "Keep settings after restart" option, all changes that you make under the "Calls" menu will be reset after Zoiper5 has been restarted.
     

2. Server-Initiated Auto-Answering via SIP Header or Notify Message

   • The PBX/server can instruct Zoiper to auto-answer using a special SIP header or a SIP Notify message.

   • Requires proper server configuration and Zoiper settings adjustment.

 How do I enable server-side auto-answering in Zoiper5?

To accept auto-answering commands from the server, you must enable a specific setting in Zoiper:

• Go to: Settings → Automation → Accept server-side auto answer

Make sure this is turned on for either method below to work.

 1. Auto-answer through SIP header.

What SIP header format should my server use?

On the PBX (e.g. Asterisk), configure your dialplan with the following syntax:

exten => 100,1,SIPAddHeader(Call-Info:<sip:>\;answer-after=5)
exten => 100,n,Dial(Sip/mynumber)


• The answer-after=x parameter specifies the number of seconds before Zoiper auto-answers.

• Adjust the value x to your desired delay time.
  
  

 2. Auto-answer through NOTIFY packet. 

In addition to SIP headers, Zoiper also supports auto-answering via a SIP Notify message using the "Event: talk" header.

To use this method:

1. Your PBX must send a SIP Notify message containing: Event: talk

2. On Zoiper, ensure the following is enabled: Settings → Automation → Accept server-side auto answer