CallTower vs Intermedia Unite (2026): which should you pick?

Pick CallTower if

• Fits if your company already runs on Teams, Webex or Zoom
• Works for IT partners who resell business phone service

Look elsewhere if

• Skip it if you want a posted price, as quotes go through sales
• Watch out: the Teams, Webex or Zoom licenses are a separate cost
• Not for you if you want a standalone phone system, as it adds calling to other platforms
• Tight if you want to buy direct, as the listing shows it sells largely through resellers

Pick Intermedia Unite if

• Fits if you want phone, chat and video from one vendor with one price per user
• Works for Microsoft shops that want Outlook and Active Directory links

Look elsewhere if

• Pricey if you add the extras: toll-free numbers, company messaging, webinars and archiving beyond 30 days all cost more
• Watch out: both plans are quoted, so the final price and contract length are set in a sales call
• Watch out: texting is capped at 500 on Pro and 1,000 on Enterprise, and the page doesn't give the period
• Tight if you want to try it free, as no trial is listed

CallTower

• No pricing is published, so pricing is unverified and goes through sales or channel partners.
• It supplies calling for other collaboration platforms, whose own licenses are bought separately.
• Partner, agency and MSP programs show it sells largely through resellers.

Intermedia Unite

• Both plans use a Get quote button, so the final price and contract length are set in a sales conversation.
• Toll-free numbers, company messaging, webinars and archiving beyond 30 days cost extra.
• Business texting is capped at 500 on Pro and 1,000 on Enterprise; the page does not give the period.
• The pricing page does not say whether the per-user price assumes monthly or annual billing.

CallTower

Teams, Webex and Zoom calling

Provides calling for Microsoft Teams through Operator Connect and Direct Routing, Webex Calling and Webex Dedicated Instance, and Zoom Phone.

Voice add-ons

Lists Dynamic E911, one-click failover, voice spam blocking, CRM integration, compliance recording and call analytics for Teams and Webex.

Texting and faxing

Offers texting for Microsoft Teams and for Webex Calling, a fax service, and CT SIP trunking.

Contact center platforms

Supplies Five9, Genesys Cloud, Webex Contact Center and Zoom Contact Center, along with its own CT Contact Center and consulting services.

Support and portal

Lists 24/7/365 support, a service level agreement and the CallTower Connect portal for controlling services.

Intermedia Unite

Business phone system

100+ calling features, an auto attendant, hunt groups, call park and pickup, voicemail transcription, call recording and web fax.

Calling to 34 countries

Both plans include unlimited domestic calling and unlimited international calling to 34 countries. Toll-free numbers cost extra.

Chat, texting and video

One-on-one and group chat, user texting capped at 500 or 1,000, and video meetings of up to 100 or 200 participants.

AI features

The Unite AI Assistant and AI call and meeting recaps are listed on both plans. AI Receptionist and Interaction Insights appear as coming soon.

File storage

Each user gets file backup, sync and share storage: 50 GB on Pro and 200 GB on Enterprise.

CRM and Microsoft integrations

Unite Extend lists Salesforce, ServiceNow, NetSuite and Dynamics, other CRMs, Active Directory, Outlook and Chrome click-to-call.

CallTower

Pricing could not be confirmed. See calltower.com.

Intermedia Unite

• Unite Pro$27.99

  per user / month, billing term not stated

  Phone system with 100+ features, calling to 34 countries, 500 business texts, chat, AI meetings for up to 100, 50 GB of storage per user. Sold by quote.

• Unite Enterprise$32.99

  per user / month, billing term not stated

  Everything in Pro with 1,000 business texts, meetings for up to 200 participants and 200 GB of storage per user. Sold by quote.