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ZAC (3CX Phone Client) — Install / Update

Source: internal note · Applies to: all clubs (3CX phone system) · Last reviewed: 2026-07

Purpose

Install or update the 3CX ZAC desktop phone client on a user's workstation. The 3CX user account/extension must already exist (provisioned separately) — this step is just the client software + authorization.

Prerequisites

  • The user's 3CX extension already exists (see the offboarding checklist §5 for the relevant 3CX fields).

Steps

  1. Remote into the user's PC (TeamViewer Host).
  2. Run the ZAC installer, or accept the pending update.
  3. When prompted to authorize, sign in / approve using CSupport credentials.

Notes / Gotchas

  • Authorization is interactive — there's no silent/scripted path, so it must be done from a remote session.
  • After install, confirm the client shows the user's correct extension.