# CallTower review (2026): is it worth it? > Business voice for Teams, Webex and Zoom, plus contact center Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. CallTower sells cloud voice and contact center services built around Microsoft Teams, Cisco Webex and Zoom. It provides calling, SIP, texting and compliance add-ons, resells contact center platforms such as Five9 and Genesys Cloud, and sells mainly through channel partners. - **Category:** Business Phone Systems - **Made by:** CallTower, Inc. - **Website:** https://calltower.com - **Runs on:** Web - **Who should skip it:** Skip it if you want a posted price, as quotes go through sales. - **Facts last checked:** Nov 13, 2026 ## Pricing CallTower's current pricing could not be confirmed from its own site. ## Key features - **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. ## Good for - Mid-size and larger companies that already use Teams, Webex or Zoom - Buyers who want a carrier for Operator Connect or Direct Routing ## Worth knowing - 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. ## ToolGPA grades **GPA: 1.8 out of 4**, graded Nov 13, 2026. CallTower supplies phone service for Microsoft Teams, Webex and Zoom, plus contact center platforms. No prices are published, and the platforms' own licenses are bought separately. - **Value for money: C.** No pricing published; it goes through sales or channel partners. - **Free plan and trial: F.** No free plan and no free trial is offered on the pages we read. - **Features: C.** Calling for Teams, Webex and Zoom, voice add-ons, texting, faxing and contact center platforms. It needs those platforms' own licenses. - **Ease of use: C.** No store rating on record. It's sold through sales and partners. - **Platforms and integrations: B.** Web, with Teams, Webex, Zoom, Five9 and Genesys Cloud. These are ToolGPA's own grades. Graded from this listing, whose facts were read from CallTower's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among business phone systems - CallTower's GPA of 1.8 is higher than 12 of the 77 other business phone systems we grade, and level with 15. - It stands best on platforms and integrations (B, above 14 of 77) and worst on free plan and trial (F, above 0). The category's chart of price against score: https://toolgpa.com/charts/business-phones ## Keep it, or make your own? **Keep it.** To replace CallTower you would be making phone numbers and calls carried over the phone network. That is not a weekend's work, with an AI app builder or without one. That makes this kind of software worth paying for, not this one in particular: 50 of the 77 other business phone systems grade higher. - You could not: Phone numbers and calls carried over the phone network. - You could not: Fax numbers connected to the phone network. - You could not: Texts from a business number, registered with the carriers. - You could not: It plugs into other products, Microsoft Teams, Webex and Zoom among them. - You could not: AI features, unless you pay a model provider for each request yourself. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Microsoft Teams, Webex, Zoom, Five9, Genesys Cloud **Tags:** Business phone line, Business texting, Online fax, AI features ## Alternatives - [RingCentral](https://toolgpa.com/tools/ringcentral): Cloud phone system with texting, fax, video meetings and team chat. [Compare](https://toolgpa.com/compare/calltower-vs-ringcentral) - [Intermedia Unite](https://toolgpa.com/tools/intermedia-unite): Cloud phone, chat and video suite from Intermedia, priced per user. [Compare](https://toolgpa.com/compare/calltower-vs-intermedia-unite) - [Nextiva](https://toolgpa.com/tools/nextiva): Business phone, texting and video with an optional AI receptionist. [Compare](https://toolgpa.com/compare/calltower-vs-nextiva) - [8x8](https://toolgpa.com/tools/8x8): Cloud phone system with team chat, meetings and a receptionist console. [Compare](https://toolgpa.com/compare/8x8-vs-calltower) - [RingLogix](https://toolgpa.com/tools/ringlogix): White-label phone, SIP and AI voice platform sold via partners. [Compare](https://toolgpa.com/compare/calltower-vs-ringlogix) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://calltower.com Page: https://toolgpa.com/tools/calltower Listed by ToolGPA (toolgpa.com).