"Our company has is very appreciative of the fast, immediate, and quality service provided by Sound Line Communications."
RW
Robert Wright
U.S.-based cloud VoIP — in business since 2008
Business Phone Systems
Built to Last.
Crystal-clear VoIP, unified messaging, and enterprise-grade reliability — all in one platform. No contracts, no hardware, no hassle.
Why businesses choose SoundLine
We're not a startup. We're a proven partner with nearly two decades of experience keeping businesses connected.
Four-Nines Reliability
We commit to a 99.99% uptime SLA. Geo-redundant data centers and automatic failover mean your phones just work — even when the unexpected happens.
Real People, Real Support
Reach a U.S.-based engineer who knows your system — not a call center script. Phone and chat support run Monday–Friday, 8am–6pm PT on Growth and above, with ticket support on every plan and 24/7 phone cover for critical outages.
No Contracts, Ever
No multi-year lock-in. Cancel whenever you like and service runs to the end of the period you have paid for. We earn your business every month by delivering a platform you'd never want to leave.
One Platform. Everything Included.
Replace five subscriptions with one
SoundLine replaces your phone system, Zoom, Calendly, Asana and Slack with one platform. One login, one bill, one support team.
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Cloud VoIP calling unlimited US & Canada, crystal-clear audio, any device
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Video meetings up to 200 participants, screen share, recording
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Team messaging & SMS internal chat, business texting, file sharing
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AI-powered tools real-time transcription, call summaries, sentiment analysis
2008
In business since
99.99%
Uptime SLA
0
Contracts required
24/7
US-based Emergency Support
Everything your team needs
The features your team actually uses, with the plan each one lands on stated up front.
Auto-Attendant & IVR
Greet callers with a professional menu and route them to the right department instantly. Build multi-level call flows with a simple visual editor.
Intelligent Call Routing
Route by time of day, caller ID, or skills. Ring groups, call queues, and simultaneous ring keep every call answered by the right person.
Video Conferencing
Host video meetings for up to 200 participants — no separate app or subscription needed. Screen sharing, recording, and breakout rooms included.
AI Call Transcription
Every call transcribed in real time with post-call summaries, action items, and sentiment scores. No manual note-taking, ever again.
Open API & App Integrations
Connect anything with our REST API and webhooks, documented in your portal. Slack and Microsoft Teams pick up call and voicemail notifications today. Salesforce and HubSpot CRM sync is in final testing — coming soon.
Mobile & Desktop Apps
iOS, Android, Windows, and Mac softphone apps give remote and hybrid employees a full-featured business phone on any device, from anywhere.
Up and running in minutes
No technician visits, no hardware to rack. Set up your entire phone system from any browser.
1
Reserve your spot
Tell us about your team on the Pricing page — we'll set up your account personally and assign you a local number.
2
Configure your system
Add users, set up your auto-attendant, and build call flows from the web portal. Our onboarding team is on standby if you need help.
3
Go live & port numbers
Start making and receiving calls immediately. Port your existing numbers to SoundLine with zero downtime — we handle the entire process.
Built for founders who run more than one thing
Multi-account is on every plan, so one login covers every company you own — each with its own numbers, users and routing.
Your First Company
Get a real phone presence in minutes — business number, auto-attendant, voicemail-to-text — without buying a single desk phone.
Every Company After That
Add the next business to the same login. Its own numbers, users and call routing, kept separate — one bill, one place to manage it all.
Portfolio Operators
Switch between the businesses you own in a click. Per-location numbers and routing, centralized roles and permissions, no vendor to re-negotiate with each time.
The Next Venture
Spin up numbers, a menu and a team the day the idea lands. Nothing to procure, nothing to install, nothing to unwind if it does not work out.
Not sure which plan fits? Use our cost calculator to estimate cost, or talk to our team for guidance.
Trusted by businesses everywhere
Don't take our word for it — here's what our customers say.
"We've been using Soundline for all of our phone services for years now. I recently made the terrible mistake of going to an Ai communication company b..."
MP
Michaela Pollard
"JJ was super helpful and professional. Management team should consider giving him a raise!"
RP
Roman Pastuszychyn
"Now that I was contacted by Victoria Petrosyan in person she resolved the issue for me regarding the new System not allowing me in to pay via website...."
DD
Darylene Dennon
"Excellent Service every time."
KM
Kevin M Gracey
"We have used Soundline's VOIP service for many years now. We always have crystal clear calls and no downtime. When we have had issues with the phones ..."
CN
Curt Nelson
"Soundline's set up is seamless, and their customer support is excellent! I highly reccommend Soundline Communications."
RC
Rachelle Costello
"Victoria was patient, kind and effective!"
DR
Dorothy Rodes
"Definitely went above and beyond to help with a new router installation. Great to do business with for sure.Thanks!"
BH
Brian Hendew
"Excellent company and very responsive to providing assistance. Superb customer service and products. Highly recommend businesses to consider this co..."
SH
Steven Hemmat
"Have used their phone service for several years and it is top notch. Good pricing, great service, tons of features, easy to use. The staff is great..."
CJ
Cameron Johnson
"I've used Soundline Commination's service for the last 4 years and am very pleased with their excellent customer service, technology & features advanc..."
MR
Michael Roberts
"Customer for several years. Very pleased. Much better than traditional land line."
MF
MI FM
"The best business partner decision we've made. Incredible customer service, tireless staff - not to mention the great pricing and features offered..."
BM
Bob Morgan
"As a small business man, I find myself having to occasionally ask favors of my vendors. Never in my 25+ years in business have I come across a compan..."
SK
Spencer King
"The service has been great!!!! Quick responses when we need changes to our account. The call recording feature was something we were missing, now it m..."
HP
Hunts Plumbing
"The crew at SoundLine has consistently gone above and beyond in service and prompt delivery. When we initially started using SoundLine's VOIP service ..."
NC
Noah Conquergood
"It was a pleasure working with these guys. It was nice to work with and support a small local business instead of navigating the headache that is a m..."
G
gabrielle
"Friendly and knowledgeable staff; small town personalized service."
DK
David Kirwan
"Best customer service. We have had a VOIP service within our company through Ring Central for a while now and have faced problems with call quality, p..."
HP
Hassan Packin
Frequently Asked Questions
Everything you need to know about SoundLine Communications
What is VoIP, and how does it work?
VoIP stands for Voice over Internet Protocol. It allows you to make and receive business calls through an internet connection instead of a traditional telephone line.
When you speak, SoundLine converts your voice into digital data and sends it over the internet to the person you are calling. Customers can still reach you using a normal business phone number, and you can call traditional landlines and mobile phones just as you would with a conventional phone service.
How is VoIP different from a traditional business phone system?
A traditional business phone system usually depends on physical telephone lines and may require specialized equipment installed at your office. A VoIP system operates primarily through the internet and is managed through the cloud.
With SoundLine, your employees can use desk phones, computers, mobile applications, or a combination of devices. Changes such as adding an employee, updating a greeting, or modifying call routing can generally be made without installing new telephone lines or replacing an entire phone system.
Can I keep my existing business phone number?
In most cases, yes. SoundLine can help transfer, or port, eligible local and toll-free numbers from your current telephone provider.
To begin the process, we will usually need information from your existing account, including the account holder’s name, service address, account number, billing telephone number, and a recent invoice. We also require a signed Letter of Authorization.
How much does SoundLine business phone service cost?
SoundLine plans start at $14.99 per user, per month when billed annually, or $19.99 month-to-month.
Your total cost will depend on factors such as:
- The number of users and extensions
- The number and type of telephone numbers
- Calling and messaging requirements
- Desk phones or other equipment
- Premium features and integrations
- International usage
- Contract term or billing frequency
- All applicable taxes
Can I make and receive calls from my computer or mobile phone?
Yes. With the SoundLine portal and mobile applications, employees can make and receive business calls without being at their desks.
Calls placed through the application can display the company’s business number rather than the employee’s personal mobile number. Employees may also be able to access voicemail, business messages, contacts, call history, and presence information from the same application.
The mobile application requires a suitable cellular data connection.
What equipment do I need to use SoundLine?
At minimum, you need a reliable internet connection and a supported device.
You can use SoundLine with:
- A compatible VoIP desk phone
- A desktop or laptop computer
- A supported mobile phone application
A desk phone is optional for many businesses. Employees can often work entirely from the desktop and mobile applications.
All your businesses, in your pocket.
SoundLine gives founders everything their companies need to communicate — phones, messaging, meetings, and AI — in one place. Start your next venture in minutes, not weeks.
Transparent pricing — no surprises
No setup fees
No long-term contracts
Live within minutes