Zoho CRM telephony: built-in calling, Zoho Voice and PhoneBridge compared

Three routes, one integration layer

Zoho's comparison page says built-in telephony fits teams that make few calls, use CRM on the web and do not want a separate PBX app, while Zoho Voice fits teams needing call-centre features, reporting or mobile calling. Zoho's pages describe the extra Zoho Voice features as live calls, reports, business hours, voicemail, spam blocking and free agent-to-agent calling.

Source: Zoho Voice Help: Zoho Voice vs Zoho Telephony

Built-in telephony: setup and billing

• Zoho says users with Administrator permission can set it up, via Setup, Channels, Telephony, Set Up Now, Buy a number.
• You choose country, region and number type (Local, Mobile or Toll Free); not every type is offered in every country.
• Zoho says credits cover number purchases, calls and recording storage upgrades, 1 credit equals 1 USD converted to local currency, and admins must buy credits to start. Number purchase and maintenance are charged monthly. Auto-recharge is optional.
• The Built-In Telephony page has tabs for plan details, phone numbers, call flows, telephony users, telephony groups and call history, which can be downloaded as CSV.
• Per user you can set group membership, permission to make outgoing calls, call recording and caller IDs. Zoho says Zia can transcribe recorded calls and give sentiment, intent, emotion and summary insights.

Source: Zoho Help: Configuring built-in telephony in Zoho CRM

The call-flow gotcha

Zoho says incoming calls are routed through the call flow associated with the number, and that if a number is not associated with a call flow, incoming calls are rejected for that number. A flow is enabled for its numbers when you click Publish; drafts can be saved and compared with the published version. So a team that bought a number and added users but never published a flow can have working outbound calls and dead inbound ones.

Zoho's built-in page lists no numeric limits for numbers, call flows or recording storage, so we state none.

Source: Zoho Help: Configuring built-in telephony in Zoho CRM

Zoho Voice through PhoneBridge: setup and requirements

• In CRM: Setup, Channels, Telephony, enable Phonebridge, open the marketplace, select and install Zoho Voice.
• In Zoho Voice: Settings, Zoho Telephony, select the CRM portal and click Integrate Portal, then select agents to import and enter a department name.
• Zoho says Zoho Telephony integration is available only in Zoho Voice's Enterprise Telephony edition, not Business Phone (these are Zoho Voice editions, not CRM editions).
• Zoho says calls will work in Zoho CRM only if you assign phone numbers to your Admin users and Telephony agents in Zoho Voice. Outgoing numbers go to agents with the service name Zoho Telephony on the Call Config page.
• In Zoho Voice's Standard plan (not the CRM edition), each Admin user licence includes 10 free Telephony agents, and configuration can be done only by Admin users in Zoho Voice. Zoho notes the feature list is constantly being worked on.

Source: Zoho Voice Help: Integrations - Zoho Telephony

What reps get inside CRM

• Click-to-call from the button next to phone numbers, and call pop-ups showing caller details from CRM.
• Call notes added to the matching CRM contact, and automatic call logging against that contact.
• After-call tasks or follow-up events, and call reminders with snooze.
• On an incoming call, the dial pad menu offers Create New Lead, Create New Contact, Add to Existing Lead, Add to Existing Contact and Add Call Details.

Source: Zoho Voice Help: Integrations - Zoho Telephony

Region and mobile caveats

Zoho's comparison page says both options are available in the US and EU data centres, while in AU only built-in telephony is listed, and in IN only built-in with Zoho Voice expected in Q3 2025. That page may be out of date, so check your own data centre in Zoho's current documentation. It also says built-in telephony calls are web-only, so mobile calling needs Zoho Voice or another provider, and that users in regions without Zoho Voice can start with built-in and later port numbers without service disruption. That last point is Zoho's claim and not something we tested.

Source: Zoho Voice Help: Zoho Voice vs Zoho Telephony

Choosing a route (advice)

• Count how many people make or take calls and whether they work on mobile; that decides built-in versus a fuller PBX.
• Check whether you already have a phone provider on the Zoho Marketplace list before buying new numbers.
• Decide where call logs should land and who reviews call notes, otherwise logging is data nobody reads.
• Test an inbound call from a phone outside the company after every change, not just an outbound call.
• Check profile permissions so only the right people see call data.

When to bring in help

Telephony touches licences, permissions, call routing and CRM data in one go. If you are comparing options or inherited a setup where calls are not logging, a short design review usually costs less than trial and error. That review is part of Zoho CRM customization at Skyfall Labs. We have a commercial interest, so weigh our view accordingly.