Zammad offers phone functionality for users with access to a CTI (computer telephony integration) system (available since version 2.6).
Using the CTI integration enables you to greet customers by name, get their tickets up on the screen with a single click. Or, identify missed calls at a glance, and return calls right from within Zammad. Manufacturers of telephone systems or developers can use this interface to connect their telephone system to Zammad.
What do I need to get started?¶
Zammad requires the following information to support the agent:
- individual call events (e.g., call incoming/answered/ended)
- caller ID data
To use the new CTI interface, your CTI system must transmit this information (and only this information) to Zammad via HTTP.
What can it do for me?¶
*Inbound calls* - Caller ID display: Open a caller’s customer profile with just one click - Intelligent caller ID search: Automatically scans tickets for caller ID data (e.g., in email signatures) if customer account data is missing - Caller overview: See a caller’s entire ticket history, or instantly create a new ticket - Call journal: See all calls at a glance, along with their status (e.g., which ones require a call back?) - Agent overview: See who’s currently on a call - Selective call blocking  - Do-not-disturb mode 
- Direct dialing: Initiate calls from within Zammad 
- Dynamic caller ID: Set your caller ID based on, e.g., the destination country of the call*
|||(1, 2, 3) requires PBX/telephone system support|
More information can be found on our CTI API intro.