Compare · Optimum

Optimum sells a line. We build the system.

Optimum Business Hosted Voice is a phone line sold with your internet, set up per seat and managed in a portal. We fit the call flow, build the phones and the AI receptionist, and run the network on whichever circuit you choose.

Facts about Optimum Business checked in October 2026, from their published pages and public records; third-party estimates are labelled. Every claim links to its source.

Fit

Who each is for

Optimum

A business that wants its phones on the same company as its internet, and has someone on staff to manage the system in a portal.

SLINC

Businesses that want the system fitted to how they answer the phone, at each location, and one firm accountable for the phones and the network under them, on any circuit.

Side by side

Optimum and SLINC, row by row.

Advertised price

Optimum

Business Hosted Voice: $24.95 per Basic Seat or $34.95 per Business Seat, per month. [1]

SLINC

We don’t publish a price. We write one monthly agreement for your office after the walk-through.

What sits on top

Optimum

“Installation Charge (wiring included) $60.00 per seat.” A $110.00 service call or missed appointment fee, and an $80.00 hourly service charge. [1]

SLINC

One monthly agreement, written for your office after the walk-through. Ask to see every line of the written proposal before you sign.

Phones

Optimum

Rented Grandstream desk phones at $4.00 to $6.00 a month each. A lost or unreturned phone is billed at $100.00 to $500.00, by model. [1]

SLINC

Yealink desk phones configured for each person: keys, labels and sidecars, built and test-called before cutover.

Who builds the call flow

Optimum

You do, in the portal: “Easily add and remove extensions or change call-routing rules with just a few clicks.” [2]

SLINC

We do, with you, per location: the routes, the hours and holidays, and what happens when nobody can pick up. In writing, approved by you.

Who fixes the network

Optimum

Optimum sells the internet line separately from Hosted Voice. Managed Wi-Fi is another Optimum product, Business Pro WiFi. [1] [3]

SLINC

We do. The firewall, switches and Wi-Fi run under the same agreement, on whichever circuit you choose.

AI receptionist

Optimum

The Hosted Voice page makes no AI receptionist claim. The rate card lists an “Additional Auto Attendant with Pilot Number” at $20.00, and a “Virtual Receptionist” at $14.95 on Optimum Business Voice. [2] [1]

SLINC

Built in-house on the newest realtime voice models and written into your call flow. It answers in your business name from a script we write with you, and warm-transfers urgent callers only after the person says yes.

Contract and exit

Optimum

A “60-day, money-back guarantee” for new installations, if service ends and all equipment is returned within 60 days of install. [2]

SLINC

Written into your agreement before you sign. Ask for a copy at the walk-through.

Changes after go-live

Optimum

You do: “managing your entire phone system from our convenient online portal.” [2]

SLINC

A call or an email in plain English. We make the change and confirm it back.

The setup

The setup: who does the work.

Optimum sells the line and a portal. Building the system on it is left to you.

What Optimum asks of you

  • Pay for the install: “Installation Charge (wiring included) $60.00 per seat.” [1]
  • Run it from the portal: “managing your entire phone system from our convenient online portal.” [2]
  • Make the changes yourself: “Easily add and remove extensions or change call-routing rules with just a few clicks.” [2]
  • Check the result: “Customer is solely responsible to notify system provider and to test and verify that systems are in good working order following Hosted Voice installation.” [2]

What we do instead

  • We walk each location with you and learn how your calls actually move.
  • We write the design: the call flow, hours and holidays, every desk’s keys and the AI receptionist’s script, for you to approve.
  • We build and label every phone and test the AI receptionist on a test line, to our written standard.
  • We cut over after you close: numbers ported, every route walked, every seat test-called.
  • We run it under one monthly agreement. Changes are a call or an email; we make them and confirm back.

The network

When calls break up.

“Customer is solely responsible to notify system provider and to test and verify that systems are in good working order following Hosted Voice installation.”

If your internet is Optimum, your phones and your circuit can come from one company. We sit above whichever circuit wins and can run a second one for failover where it makes sense.

Network

Choppy calls, and a switch nobody suspected.

Situation
A client’s calls kept breaking up. Each of their other providers said its side was fine.
What we found
The phones’ own call diagnostics pointed to the PoE switch in the equipment closet, which was producing collisions in its managed configuration.
What we fitted
We corrected the switch configuration and the calls cleared. The phones and the network they ride on are now run by one firm.
Read more

Terms

The fine print

What Optimum’s own terms and pricing pages say.

  • Business Hosted Voice installation: “Installation Charge (wiring included) $60.00 per seat.” [1]
  • “Installation fees apply. Other restrictions may apply.” [2]
  • Service Call/Missed Appointment Fee: $110.00. Hourly Service Charge: $80.00. [1]
  • Lost, damaged, stolen or unreturned equipment: Grandstream GXP1625 and GXP2170 phones $100.00, GXP2140 $200.00, Polycom IP 6000 conference phone $500.00. [1]
  • The 60-day money-back guarantee applies to new customer installations “if service is terminated and all equipment is returned within 60 days of install.” [2]

Fair is fair

Where Optimum is stronger

Honest answers build trust, so here is where they win.

  • Optimum sells business internet and phone service, so both can come from one company. [1]
  • “No annual contracts and a 60-day money-back guarantee,” plus a buyout of your current contract “up to $1,500.” [4]
  • “24/7/365 Technical Support” from a “U.S.-based technical support service team.” [2]

The other cable company

If you’re on Spectrum.

Spectrum Business Connect makes the same offer from the other direction: its devices “ship preconfigured and ready to use, so you can simply plug them in,” and “Installing physical equipment is optional.” [Spectrum Business Connect] The plug-in moment is where our work ends, not where it starts. By the time the phones are plugged in, we have reviewed the routes, the hours and the AI receptionist, on whichever circuit you run.

Switching

Switching from Optimum

Your numbers come with you, and your Optimum internet can stay. We time the port around any Optimum agreement, list the rented phones to send back, and cut over after you close.

Questions

Optimum or SLINC: questions.

Can I keep Optimum internet and switch my phones to you?
Yes. Your phones and the network inside the building run on whichever circuit you keep. We set the firewall, switches and Wi-Fi for voice on top of it.
Will my Optimum rented phones work with you?
Rented phones go back to Optimum; its rate card bills for unreturned equipment. We supply Yealink phones built for each desk and list the rentals to return so nothing is missed.
What about my Optimum agreement?
Bring it to the walk-through. We read the term and the exit terms with you and time the port and the cutover around them.
Do you fix Optimum outages?
We can’t fix their circuit. We can run a second circuit for failover where it makes sense, so the phones keep working when one line goes down.

Start with a walk-through

Put our design next to their quote.

We walk the office, map how your calls actually flow, and hand you a written design to set beside anything you have been offered.

  1. [1] Optimum Business services rate card
  2. [2] Optimum Business Hosted Voice
  3. [3] Optimum Business Pro WiFi
  4. [4] Optimum Business phone

Optimum is a trademark of CSC Holdings, LLC. Spectrum is a trademark of Charter Communications, Inc. SLINC is not affiliated with either. Prices and terms were checked in October 2026 and change often; check the linked source. Spotted something out of date? Email support@slinc.co.