VoIP call center solutions, built on a 99.999% uptime network
Hosted VoIP call center software with queues, IVR, skills-based routing, supervisor tools, and an AI voice agent that covers overflow and after hours. Unlimited US calling, with the first 30 seconds of every Sage call free and per-second billing after that.
Your call center is only as good as the platform under it.
Hosted and cloud call center tools promise a lot, then buckle when call volume spikes or a carrier hiccups. Dropped queues and dead air cost you customers in the moments that matter most.
CallSprout runs your call operations on a redundant, global network with Sage, an AI voice agent that answers, qualifies, and routes calls before a human ever picks up, so your team handles the conversations that need them and nothing falls through.
Connected-system features work through your existing CRM or business system and depend on that system offering a compatible API. Availability varies by provider.
What a VoIP call center is, and how it differs from a contact center
A VoIP call center handles a high volume of phone calls over your internet connection instead of over analog lines and an on-site PBX. The calls arrive as data, which is why everything downstream gets easier. A call can be queued, recorded, transcribed, and routed by rules you write, and an agent can take it on a desk phone, a laptop, or a mobile app without anything changing about how the call was delivered.
Contact center is the broader term. A contact center adds channels beyond voice, usually chat, email, and SMS, with one queue spanning all of them. Almost every vendor now sells a contact center suite, and plenty of small teams end up paying for channels they never turn on. CallSprout is deliberately voice first: queues, routing, supervision, and an AI voice agent that can carry a real conversation end to end. If the phone is where your revenue and your complaints actually arrive, that focus is the point.
You will also see hosted VoIP call center and cloud call center used to mean the same thing. The platform runs in our data centers, you reach it over the internet, and there is no PBX in your closet to patch, power, or replace. Adding an agent is a change you make in a browser, not a hardware order. If you want the layer underneath, see how the platform is built.
Everything a modern call center needs.
One platform for queues, routing, supervision, recording, analytics, and AI.
Answers, qualifies, and routes calls 24/7 before they ever hit a queue.
Hold with position and announcements, then the next free agent takes it.
Send each caller to the right agent or queue automatically.
Self-service menus and call flows you can change in minutes.
Supervisors listen in, coach quietly, or join the call outright.
Every call captured, searchable, and summarized.
Live queues, wait times, and agent performance at a glance.
A redundant global network built for 99.999% uptime.
Inside VoIP call center software: queues, IVR, and routing
A queue is the difference between a call center and a phone that rings. When every agent is busy, the queue holds the caller in position, plays what you want them to hear, and passes the call to the next agent who frees up in the order you set. Callers hear their position instead of an endless ring, and supervisors watch the wait building in real time rather than hearing about it on Friday.
An IVR, or auto attendant, is the menu that answers first and sends the call down the right path. Sales one way, support another, billing to the queue that can actually pull up an invoice. The menu is not the point. The point is that the call arrives at someone who is ready for it. Call flows change in a browser, so the Monday after a reorg does not need a support ticket.
Skills-based routing decides who gets the call once it is in the system: the Spanish speaker, the account manager who owns that customer, the tier two tech. When connected to your CRM, CallSprout can route on what it knows about the caller, so a known customer stops repeating their account number to three people in a row. There is more on that in CRM smart routing.
On Contact Center Pro, supervisors get monitor, whisper, and barge. Listen to a live call silently, coach the agent without the caller hearing it, or join the call outright when it needs saving. Live wallboards put queue depth, wait times, and agent state on a screen the floor can see, and advanced reporting turns the same data into the weekly numbers. Calls can be recorded, and AI Transcription turns those recordings into searchable text at $0.0198 per minute. Voicemail transcription is free on every plan.
How a 3 to 15 seat team runs a VoIP call center
Most of the teams we set up are not 200 seats. They are three people who answer everything, or fifteen split across sales and support, trying to run a real call center without hiring somebody whose whole job is running it. That shape is worth designing for on purpose.
Start with two queues, not ten. A general queue and one specialist queue cover most small operations, and every extra queue is another place a call can quietly go to die. Put your two strongest people at the top of the general queue, give the specialist queue a fallback so it never dead ends, and let the auto attendant do the sorting up front.
Then decide what happens when nobody picks up, before you decide anything else. That one answer, voicemail or callback or Sage, is what your callers will actually experience on your busiest morning. After that, mix your seats. Not everyone needs supervisor tools and wallboards, so agents and supervisors go on Contact Center Lite or Pro and the rest of the company goes on Business. Every plan includes unlimited US calling, with Sage available and billed on usage.
A team this size should be live in days. There is no hardware to rack, we port your numbers, and we build the first version of your call flows with you instead of handing you a manual. Teams that answer calls on behalf of other companies, like outsourcing and BPO operations, usually go further and run a separate queue and routing rule per client account.
Hosted VoIP call center versus on-prem, and where the money goes
The old model was capital. Buy a PBX, buy the cards, buy the handsets, pay an integrator to wire it together, then depreciate all of it while paying a support contract to keep it patched. The hosted model is operating cost: a per-seat price, usage you can see itemized, and hardware that is our problem instead of yours.
The bucket people forget is the cost of change. On premise, adding five seats for a busy season means licenses, probably hardware, and someone's calendar. Hosted, it is five seats added in a browser, then removed when the season ends, effective at the end of that month's billing cycle. Same story for a new office, a remote agent, or a call flow you want to try for a week and roll back.
Watch how a vendor bills, not just what they charge. With CallSprout, US calling is unlimited, and Sage is free for the first 30 seconds of every call, then billed by the second, so a 20 second call she answers costs nothing, and a 90 second call bills 60 seconds. Rounding every AI call up to the next minute is a quiet, permanent tax on a call center, where short calls are most of the job. Our pricing page lists every package and metered rate in full.
| What it costs you | Hosted VoIP call center | On-prem PBX |
|---|---|---|
| Up front cost | Seats and numbers. Nothing to buy or install. | PBX hardware, licenses, handsets, and an integrator to wire it. |
| Adding seats | Add them in a browser the same day. Removals take effect at the end of the billing cycle. | Licenses and often hardware, on someone else's timeline. |
| Upgrades and patching | Handled for you, with no maintenance window on your side. | Yours to schedule, usually under a support contract. |
| Remote and hybrid agents | The same experience at home as at a desk. | A VPN, a session border controller, or a second system. |
| When something fails | A redundant network with automatic failover. | One site, one power feed, one internet drop. |
| How you pay | Per seat, with unlimited US calling. Sage is free for the first 30 seconds of every call, then billed by the second, and inbound toll-free minutes are metered. | Capital up front plus a recurring maintenance contract. |
Where Sage fits: overflow, after hours, and the calls nobody should wait on
Sage is the CallSprout AI voice agent, and in a call center she is not a phone menu with a nicer voice. Sage answers, holds a real conversation, captures who is calling and what they need, handles the routine questions outright, and either finishes the call or hands your team a warm transfer with a written summary already attached whenever someone is available to take it.
The two places she pays for herself first are overflow and after hours. Overflow is the ninth call during the morning rush, the one that would have listened to four minutes of hold music and hung up. After hours is every call between closing and opening, which for most teams is more than half the week. In both cases the honest alternative is not a shorter wait. It is a voicemail nobody leaves.
Sage is available on every plan and metered only when she is working. The first 30 seconds of every call are free, then $0.39 per minute, billed by the second. A caller who just wants your hours costs nothing, and your team keeps the conversations that need a person. See how the AI voice agent works, or leave your number above and she will call you in about ten seconds.
What a VoIP call center costs here.
Three per-seat plans you can mix on one account. Sage and AI Transcription are available on every plan and metered only as you use them.
A full business phone system for your whole team, with Sage ready when you want her.
- Included: Unlimited US local and long distance calling
- Included: Voicemail with transcription
- Included: Transfers, conferencing, and call routing
- Included: Enhanced ring groupsPrioritized, sequential, or parallel ringing with escalation and overflow
- Included: Live call monitoring
- Included: Microsoft Teams integration
- Included: SMS business messaging200 messages per user each month
- Included: Video meetingsUp to 3 participants and 45 minutes
- Add-on: CRM integration and CRM-smart routingFree for your first 12 months
- Billed on usage: Sage AI voice agentFirst 30 seconds of each call free, then $0.39/min, billed by the second
- Add-on: Communicator desktop, mobile and web apps
Everything in Business, plus the visibility a busy front desk or small team needs.
- Included: Everything in Business
- Included: Live wallboards
- Included: Member performance dashboard
- Included: Scheduled reports with automated delivery
- Included: Local presence dialingLocal numbers are billed as an add-on
Everything in Lite, plus a full contact center for agents and supervisors.
- Included: Everything in Contact Center Lite
- Included: Call queues with agent login, wrap-up, and queue position
- Included: Skills-based routing
- Included: Supervisor monitor, whisper, and barge
- Included: Omnichannel agent workspaceVoice, email, live chat, WhatsApp, and Messenger. SMS channel billed separately.
- Included: Outbound dialer with dispositionsPreview, progressive, power, and predictive
- Included: CSAT surveys and advanced reporting
IncludedBilled on usageAdd-on
- Sage AI voice agent: the first 30 seconds of every call are free, then $0.39 per minute.
- AI Transcription: $0.0198 per minute of call audio. Voicemail transcription is always free.
US calling is unlimited on every package. Sage is free for the first 30 seconds of every call, then billed by the second, and inbound toll-free minutes are metered. See full pricing.
Built for how contact centers actually run.
Hosted call center, contact center, and overflow, on one platform.
- Hosted and cloud call center: spin up queues and agents with no hardware to rack.
- Inbound contact center: IVR, skills-based routing, and callbacks that respect the caller's time.
- Outbound campaigns: power your team with click-to-call, local presence, and call recording.
- Overflow and after-hours: Sage catches every call when the queue is full or you are closed.
- Remote and hybrid agents: the same queues and supervision from home, an office, or a phone.
- Seasonal spikes: add seats for the busy months and drop them when it quiets down.
Outbound teams can show a local caller ID on every call with local presence dialing, and returned calls ring the agent who called.
Sage, our AI voice agent, is the difference: she answers and routes before a human is needed.
It all runs on our carrier-grade voice platform, so call quality holds under load.
And our 99.999% uptime network keeps your queues answering, even during an outage.
A short, honest buying checklist
Six questions worth asking any VoIP call center vendor, including us.
- 1Ask how they bill a 20 second call.
Per-second billing and per-minute rounding look identical on a rate card and diverge fast on real call center traffic. CallSprout calling is unlimited in the US, and Sage is free for the first 30 seconds of every call, then billed by the second.
- 2Count the seats that truly need queue tools.
Supervisor monitor, wallboards, and advanced reporting matter for people on the floor and nobody else. Mixing contact center seats with Business seats usually costs less than putting the whole company on one plan.
- 3Ask what happens when your internet drops.
A good answer involves failover: calls rerouting automatically to mobiles or a backup destination. If the answer is that it never happens, ask the question again.
- 4Make them route a call on your own data.
Every demo routes a call. Ask to see one routed on a real record from your CRM, and ask who edits that rule six months from now when you are the one running it.
- 5Get the AI answering in writing.
Ask what the AI does when it cannot help, what it costs per minute, and whether you can read a transcript of every call it took. Vagueness here gets expensive later.
- 6Ask who handles the number porting.
Moving numbers is the part that goes wrong. Ask who files the paperwork, how long the carrier takes, and what happens to calls during the cutover window.
VoIP call center solutions, answered.
- What is a hosted VoIP call center?
- A hosted VoIP call center runs your queues, routing, and agents entirely in the cloud over your internet connection, with no on-site PBX hardware. CallSprout hosts the platform, so you add agents and change call flows from a browser instead of buying equipment.
- How is a VoIP contact center different from a VoIP call center?
- A call center handles voice. A contact center adds other channels such as email, live chat, and messaging, with routing that spans them. CallSprout covers both: Contact Center Lite gives a voice team ring groups, wallboards, and monitoring, and Contact Center Pro adds queues and an omnichannel agent workspace.
- How much do VoIP call center solutions cost per agent?
- Contact Center Pro is $94.95 per agent per month and includes call queues with agent login, skills-based routing, supervisor monitor, whisper and barge, an omnichannel agent workspace, and an outbound dialer. Contact Center Lite is $34.95 per user per month for teams that need live wallboards, dashboards, and scheduled reports without full queues. Seats that do not work a queue can sit on Business at $22.95 per user per month. Sage, the AI voice agent, is available on every plan and metered at $0.39 per minute after the first 30 free seconds of each call, billed by the second, and AI Transcription is $0.0198 per minute.
- Can agents work from home, or does a VoIP call center need an office?
- Agents can work anywhere with a solid internet connection. The same queues, routing, and supervisor tools work from a laptop at home, a desk phone in the office, or a mobile app, because the call is delivered over the internet rather than to a physical line in one building.
- Can the AI voice agent handle overflow when every agent is busy?
- Yes. When all agents are occupied or you are closed, Sage answers, gathers the details, and either resolves the call or books a callback, so no caller hits a dead end. The first 30 seconds of each call are free, then Sage is metered at $0.39 per minute.
- How long does it take to move an existing call center to CallSprout?
- Most teams are live in days, not months. There is no hardware to install, we port your existing numbers, and we rebuild your call flows with you before the cutover so the first day on the new platform looks like the last day on the old one.
More on running calls with CallSprout.
Every package, every metered rate, and what per-second Sage billing means on your invoice.
The network, the apps, and the reliability engineering underneath your queues.
How Sage answers, qualifies, and summarizes a call before anyone picks up.
Running per-client queues and separate routing for every account you answer for.