Shared vs Dedicated Softswitch Hosting in 2026: Why Your Switch Goes Down at Peak Hours
A shared softswitch is the cheapest way to start a VoIP business, and often the most expensive way to grow one. When several operators share one server, a traffic spike from any one of them can slow down or stop calls for all of them.
We learned this the hard way.
What we went through
Before Celvesta existed, our team ran wholesale VoIP traffic. In 2018 we rented a VOS3000 switch from a hosting provider. The price was low and setup was quick. Then traffic grew.
During peak hours, the switch went down three to four times a day. Each outage lasted around two hours. In wholesale, that means failed calls, customers moving traffic elsewhere, and vendors asking why volumes dropped.
When the switch wasn't down, it was slow. We had call quality complaints, and our call records didn't match our vendors' and customers' records. We can't prove exactly what caused the billing differences. Our best explanation is that other operators on the same server were overloading it. What we know for certain is that we spent hours reconciling invoices instead of selling.
The software wasn't the problem. The shared server was.
What shared and dedicated actually mean
- Shared hosting: one server runs the switch for several operators. CPU, memory, bandwidth and the server's IP address are split between everyone on it.
- Dedicated hosting: one server runs the switch for one operator only. All its resources and its IP address are yours.
Both can run the same software. The difference is who else is on the machine.
Why shared switches fail at peak times
Peak hours are the same for everyone. Operators on a shared server often serve similar markets, so their traffic rises together. That is exactly when the server runs out of room.
- Downtime when one operator spikes. A burst of calls from one customer, such as a dialer campaign, can push the server past its limit and drop calls for everyone.
- Poor call quality. An overloaded server processes calls late, which shows up as choppy audio and slow call setup.
- Billing mismatches. A slow switch can record calls differently from your vendors and customers, which leads to disputes.
- Shared IP reputation. If another operator sends junk or fraudulent traffic, vendors may block the server's IP. Your traffic gets blocked with it.
- Restarts you don't control. A restart or update for one operator restarts the switch for everyone.
- Slow support during outages. When the server is down, the provider is handling every customer on it at once.
Why startups choose shared anyway
Price. Shared VOS3000 hosting is easy to find for around $25–30 a month for 200 concurrent calls, and about $50 a month for 1,000. For a new business watching every dollar, that is hard to ignore.
Some providers also promise "you're the only one on this server." Sometimes that's true. Often there is no way to check.
How to tell if your switch is really dedicated
Ask your provider these questions before you pay:
- Is this server used by any other customer, now or later?
- Does my switch have its own IP address that no other customer sends traffic from?
- How much CPU and memory is reserved for me, and can I see it?
- Who decides when the server is restarted or updated?
Vague answers usually mean shared.
Our advice
If you're testing an idea with a few small customers, a cheap shared switch can work for a short time. But if your budget allows it, go dedicated. Once real customers depend on you, outages and billing disputes cost far more than the difference in hosting price.
Why we built Celvesta this way
These problems are why every Celvesta customer gets their own dedicated server. No other operator shares your CPU, memory or IP address, so someone else's peak hour can't take your switch down.
Plans are sized by concurrent calls, from 200 concurrent calls upward. We include free onboarding, where we set up your customers, vendors and routes, plus two days of free test traffic so you can try it before you commit.
Talk to us through our official channels, or request a demo.