Cloud PBX for contact centers
A contact center needs three things from a PBX: queues with clear rules, a supervisor with a live view of the line, and reporting that reflects the shift. sipbox provides them on your own carrier’s trunk — and at high call volumes the per-seat model is exactly where the saving comes from.
Where a contact center hits the limits of a carrier’s PBX
Minutes eat the budget
At tens of thousands of minutes a month, the carrier’s markup on traffic becomes the main line of spend — and grows in lockstep with your calling targets.
The supervisor cannot see the line
Who is talking, who stepped away, how many are waiting — only a summary shows that. Stepping into a call that is going badly is impossible.
Adding an agent takes days
Every new seat means hardware, configuration and a ticket to the provider. Scaling a shift for the season turns into a project.
How sipbox handles it
The platform assumes call volume is high and the shift roster keeps changing.
Queues with dialling rules
The order agents are tried in, how long to ring, what happens when nobody answers. A callback from the queue takes the edge off the peak: the caller does not wait, and is not lost either.
Three supervisor modes
From the manager’s handset: listen silently, coach the agent so the customer hears nothing, or join as a third party. Plus agent statuses in real time.
A seat in minutes
A new agent is an account and a browser. No handset, no software, no provider ticket. A shift can be scaled up for a season and scaled back afterwards.
Outbound rules by destination
Routing across 245 countries with separate rules: where calling is allowed, where it is not, which trunk carries which destination. A backup carrier takes over if the primary is unavailable.
What the contact center gets
- The cost per minute is the carrier’s own, with no intermediary markup on top.
- The supervisor works in the moment — hearing the call and able to step in, not reviewing recordings at night.
- A shift scales in an hour rather than a week of provider paperwork.
- A carrier outage does not stop the line: a backup trunk can be configured.
What it costs for a contact center
Priced per agent seat. The higher the call volume, the sharper the contrast with a model where the invoice grows with the minutes.
| Team size | Plan | Per month |
|---|---|---|
| 20 agents | Team | $180 |
| 50 agents | Team | $450 |
| 100 agents | Business | $1,400 |
Monthly billing; paying annually is 20% lower. Above 50 seats the terms are worth discussing individually.
Questions about a PBX for contact centers
How many simultaneous calls can it handle?
Can a supervisor listen and coach during a call?
Is there an auto-dialer or predictive dialling?
What happens during a carrier outage?
Where are recordings kept at high volume?
Related solutions
Connect your own trunk
Tell us about your setup — we’ll estimate the savings at your volume and help configure your carrier’s trunk.