If you run a team of 100 or more users on 3CX and your CRM is the one your team logs into every day, you have a clear path to tie phone calls into customer records without changing your phone system. Connect Zero for 3CX is the bridge that sits between the two, streaming live call events into your CRM, attaching recordings to the matching contact, and firing workflow triggers on missed calls.
TL;DR: Enterprise teams of one hundred or more users on 3CX get a flat-per-location CRM bridge that does not scale costs with seat count. USD 39 per location per month plus usage meters. Two-minute install per location. Suits enterprises running 3CX as their incumbent PBX and a marketplace CRM as their customer system.
Enterprise teams running 3CX at one hundred plus users have usually already paid for an internal integration project or a custom connector that costs more than a marketplace app but delivers less polish. The per-seat pricing on competing tools makes a marketplace bridge look impossible at that scale, so enterprise IT defaults to a custom build. The custom build then becomes a maintenance line item forever. The 3CX team and the CRM team end up triaging integration bugs as a permanent ongoing workload.
What pulls enterprise teams toward Connect Zero for 3CX is the flat-price economics that hold at any scale. USD 39 per location per month means a multi-location enterprise pays per location, not per seat. The marketplace app handles call flow, recording attachment, missed-call workflows and dashboard reporting. The internal team does not have to triage integration bugs forever. New 3CX releases and CRM updates are handled by Connect Zero rather than internal IT.
The habit that traps enterprise teams is the custom-connector-and-maintenance pattern. The internal team builds a connector once, then spends years maintaining it. The bridge replaces that habit by being a marketplace app maintained by Connect Zero. The internal team focuses on the business logic above the bridge, not the bridge itself.
The anxiety with any new tool at enterprise scale is security review, change management and the integration impact on existing flows. Connect Zero for 3CX runs as a marketplace app on the CRM side. The 3CX side connects via the standard Call Control API with a dedicated API user. Security review focuses on those two interfaces, both of which are vendor-standard.
Enterprise teams running 3CX at one hundred or more users tend to have a custom integration in place because the per-seat marketplace tools are too expensive at scale. The custom integration was built two or three years ago, has accumulated tribal knowledge, and breaks every time 3CX or the CRM ships a non-backwards-compatible change. The internal IT team treats it as a maintenance burden. New polish features (richer missed-call workflows, deeper dashboard slicing, multi-location call routing) never ship because the team is busy keeping the existing bridge alive. The enterprise pays for engineering attention on a bridge that should be commodity. The result is a perpetually under-polished integration with a perpetually high opportunity cost.
Connect Zero for 3CX holds at flat USD 39 per location per month regardless of seat count. A two-hundred-user enterprise on three locations pays USD 117 per month base. Usage meters scale with call volume. The marketplace app handles call event flow, recording attachment, missed-call workflows and dashboard reporting. The internal IT team can decommission the custom connector and focus on business logic above the bridge. Connect Zero maintains the bridge through 3CX and CRM updates. New polish features ship on the Connect Zero roadmap rather than competing for internal engineering time. Security review focuses on the marketplace app and the 3CX API user, both of which follow vendor-standard interfaces.
Five steps, about two minutes from start to first call event in your CRM.
If your 3CX system is behind a VPN or restricted by IP, you allowlist the Connect Zero outbound IPs (documented in the setup guide) and the bridge connects without further configuration.
Yes. The flat price is USD 39 per location per month. A three-location enterprise pays USD 117 per month base. Usage meters scale with call volume across all locations.
Yes. The bridge is a marketplace app on the CRM side and connects to 3CX via the standard Call Control API with a dedicated API user. Compliance audit focuses on those two interfaces. The marketplace app inherits CRM-side access controls. The 3CX API user can be scoped to the minimum permissions needed.
The bridge routes calls into the CRM location that owns the relevant 3CX extension mapping. If your enterprise runs one 3CX system across many CRM locations, extension-to-location mapping determines where each call lands. If your enterprise runs separate 3CX systems per location, each location installs the bridge independently.
Yes. Most enterprises decommission their custom connector after a parallel-run period of one to two weeks. The bridge writes calls to the CRM in the same shape your custom connector did, so downstream automations continue to work. The custom connector then gets retired.
Three ways to start, in increasing depth.
Two related pages worth a read before you decide: the Aircall-to-CRM bundle comparison covers the cost shape if you are weighing a PBX replacement, and the JustCall-to-CRM bundle comparison does the same for the JustCall path. The Connect Zero pricing page lays out the meters with a worked monthly example, and the setup guide walks through the same five-step install in more detail.
For smaller teams, see the 25-100 users page. For multi-office enterprises, see the multi-location agency page.
Last updated 2026-05-24 by the Connect Zero team. Adelaide, South Australia. Questions about your specific 3CX setup? Use the contact page or email hello@connectzero.com.au.
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