On-Site Documentation

3CX Call Event Templates

Use selected 3CX call events to send controlled WhatsApp replies only inside active conversation windows.

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Call Events

Controlled template sending

Call events can send controlled WhatsApp replies only when call_event_enabled is active, the relevant template is enabled, and strict conversation-window mode allows the recipient.

Supported call events

missed_call
voicemail
call_ended
queue_callback
after_hours

Template variables

{{customer_phone}}
{{agent_extension}}
{{queue}}
{{call_time}}
{{business_name}}

Safety behavior

15-minute cooldown per integration, event type, and destination phone.
Strict conversation-window mode is enabled by default, so the WhatsApp user must have messaged first within the active window.
Suppressed recipients are blocked.
All messages pass through ResponsibleMessageSender.
Marketing language and disallowed purposes are blocked.