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VoIP & Cloud Phone Providers in Singapore: Buyer's Guide (2026)
What engaging a VoIP or cloud phone provider gives you: a phone system with no hardware, no PBX, and no site visit. And what it quietly takes back: your dial plan, your call recordings, and, if you are careless, several thousand dollars of somebody else's international calls.
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Ranked list
Ranked list — directory records ordered by the published profile-signal methodology; paid modules are separate.
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A VoIP or cloud phone provider in Singapore delivers business telephony over the internet rather than over a dedicated line: hosted phone systems, SIP trunking into an existing switchboard, and cloud contact-centre platforms, provided to organisations in Singapore.
This is a licensed activity. Providing IP telephony services in Singapore, or reselling them over another operator's network, requires a Services-Based Operations licence from IMDA, and it is the first thing worth checking. The licence is not paperwork: it is what allows a provider to give you proper Singapore numbers, to hold them on your behalf, and to be accountable for how your calls are routed, including the ones that matter most.
The trade is a good one. You get a phone system with no hardware, no switchboard in a cupboard, no engineer visit to move an extension, and a monthly cost that replaces a capital purchase. What you give up is subtler than it looks. Your call flows, your recordings, and the numbers customers actually dial now live inside somebody's platform, and two risks specific to this category, emergency calling and toll fraud, are routinely discovered rather than planned for.
The list below groups VoIP, cloud phone, SIP trunking, and contact-centre providers with a recorded Singapore-presence signal. It is unranked: ordered by profile signal score, then company name, with inclusion reflecting recorded profile signals rather than endorsement. The buyer's guide beneath it names no platforms, because the argument it makes applies to all of them. What a cloud phone system is genuinely worth, what it costs you later, and what to verify before you port a single number.
Notable voip providers
Grouped by role in the market. Within each group, ordered by profile signal score, then company name — not a ranking. Inclusion reflects a recorded Singapore-presence signal, not endorsement.
Listing order reflects recorded profile signals and is not affected by payment. Sponsored placements, if any, are labelled separately and never reorder this list.
Hosted PBX & cloud phone platforms
Cloud-hosted phone systems that replace on-premises PBX hardware.
Axilant Technologies is a Singapore-based system integrator and managed-services provider focused on enterprise networking, unified communications, structured cabling, and audio-visual integration.
Borderless Hub, a subsidiary of Ascent Solutions, provides unified communication (UC) and IoT/M2M products and solutions. The company offers unified communication products and solutions to help businesses communicate cost-effectively and with greater flexibility.
Tecnomic Systems is a global cloud communication transformation partner specializing in digital transformation through voice, unified communications, and customer experience solutions.
CallTower is a US-based unified communications service provider offering hosted Microsoft Teams Voice, Cisco Webex Calling, Cisco UCM, Zoom Phone, Five9 contact center, and Operator Connect services to enterprise customers across North America, Europe, and Asia.
Crexendo is a US-based cloud communications provider offering hosted UCaaS, contact center, and SIP trunking services. The company also provides the Crexendo NetSapiens platform, which powers other UC service providers globally.
Dodid is a Singapore-based unified-communications and cloud PBX service originally launched as an SMB-focused VoIP provider, now operating under the Empyrion Digital group.
Mitel is a unified communications provider delivering voice, messaging, video conferencing, and contact center solutions to businesses worldwide. The company serves over 70 million users across healthcare, education, financial services, government, and hospitality sectors.
One-Net Communications Pte. Ltd. is a Singapore-based unified communications service provider and reseller. The company offers Cloud PBX and UCaaS subscriptions, along with on-premises IP-PBX systems.
SIPTEL Singapore provides Voice over Internet Protocol (VOIP) and Private Branch Exchange (PBX) services to businesses in Singapore. The company offers solutions including SIP trunking, internet calling, and hosted PBX.
SpiderGate provides enterprise-grade cloud communication solutions. The company offers cloud PBX systems, call center functionalities, interactive voice response, and call recording. Its services also include auto-DNC checking and extension management.
Upon Pte Ltd is a Yeastar authorised partner in Singapore, providing unified communications solutions. The company offers Yeastar Cloud PBX, IP PBX, Linkus unified communications, and VoIP gateways.
Specialising in cloud-based Voice over IP (VoIP) telephony, Velox Networks Pte. Ltd. provides Singapore businesses with a cost-effective alternative to traditional on-premise phone systems.
Yeastar P-Series PBX is the flagship unified-communications platform from Chinese-headquartered Yeastar, delivering business phone, video meetings, team messaging, omnichannel customer engagement, and CRM integrations in a single product.
8x8 Work is a cloud unified communications platform that unifies voice, video, chat, and messaging within a single application. The service is designed for businesses ranging from small teams to multinational enterprises.
Avaya Unified Communications provides enterprise voice, messaging, video, and contact-centre capabilities through the Avaya Aura platform, IP Office for mid-market customers, and Avaya Cloud Office (powered by RingCentral) for cloud-first deployments.
DCS Networks Pte Ltd is a telecommunication company in Singapore, established in 2002. The company is an IMDA SBO Licensed provider, focusing on IP PBX business.
GoTo Connect is the unified-communications platform from GoTo (formerly LogMeIn), combining cloud business phone, video conferencing, team messaging, and SMS in a single application.
RingCentral provides an Agentic Voice AI platform designed to automate, assist, and analyze customer interactions. The platform is utilized by over 600,000 businesses.
TeleCMI is a cloud communications provider serving over 3,500 businesses globally with voice AI agents, cloud PBX systems, contact center solutions, and business phone services.
Vonage Business Communications (VBC) is a unified communications product from Vonage, an Ericsson company, that integrates business phone, video meetings, team messaging, and SMS into a single platform.
Webex Suite is Cisco's integrated unified-communications and collaboration platform combining Webex Calling (cloud telephony), Webex Meetings (video conferencing), Webex Messaging (team chat), Webex Contact Center, Webex Events, and the AI-powered Webex Assistant in a single subscription.
LWS Network is a Singapore-licensed services-based telecommunications operator providing international voice termination, SIP trunking, and wholesale carrier services.
Deltel Technologies Singapore is a Singapore-licensed services-based operator providing international voice termination, SIP trunking, and wholesale telecommunications services to carriers, BPOs, and enterprises.
PCIN Link System is a Singapore-licensed services-based telecommunications operator providing international voice termination, SIP trunking, and wholesale carrier services.
SPConnect is a Singapore-licensed services-based telecommunications operator providing international voice termination, SIP trunking, and wholesale carrier services.
TE Globe is a Singapore-licensed services-based telecommunications operator providing international voice termination, SIP trunking, and wholesale carrier services within Singapore's IMDA-licensed SBO framework.
HBC Singapore is a Singapore-licensed services-based telecommunications operator focused on international voice termination, SIP trunking, and wholesale carrier services.
Headquartered in Singapore with offices across Asia, Innovax Systems develops OpsCentral, an AI-powered cloud contact centre platform serving government agencies and Fortune 500 organisations across the Asia Pacific region.
advoco develops conversational artificial intelligence for private contact-centre operations. Its system supports customer care, lead generation, and telemarketing workflows through configurable rules intended to keep agent interactions consistent across communication channels.
AVOXI provides enterprise cloud communications with international voice coverage in over 150 countries. Its platform offers toll-free, two-way local, and Local DID numbers, managed through a SaaS interface.
Twilio is a cloud communications platform as a service company providing APIs that enable developers to embed voice, SMS, email, video, and authentication capabilities into applications.
Voiso provides an AI-driven cloud contact center platform designed for sales and customer support teams. Its offerings include omnichannel communication and an AI predictive dialer, which can significantly increase call volume.
Call4tel is a Singapore-based provider of VoIP solutions, specializing in 3CX-certified PBX appliances and gateways for business communication. Their product line includes on-premise appliances pre-installed with 3CX and Debian, supporting up to 800 users.
Freshcaller (now part of Freshdesk Contact Center) is a cloud-based call-centre product from Freshworks, offering virtual business phone numbers in 90+ countries, IVR, call routing, recording, voicemail, queue management, and real-time call analytics.
Genesys Cloud CX is a cloud-native contact center platform that provides omnichannel customer engagement across various channels, including voice, email, chat, SMS, social media, and messaging apps.
Maven Lab is a Singapore-based Communications Platform as a Service (CPaaS) provider that offers programmable cloud communication APIs and complete communication solutions. The company's core offerings include SMS, voice, video, and omnichannel messaging capabilities.
Zoom offers an AI-first work platform that connects communication and collaboration. Its product suite includes Zoom Meetings, Zoom Phone, Zoom Rooms, Zoom Contact Center, Zoom Webinars, and AI-powered tools like My Notes and ZoomMate.
Netpluz Asia is a managed communications service provider based in Asia. The company offers secure, reliable, and resilient managed services across several key areas.
Knowlarity is a Singapore-headquartered cloud-communications company and one of the largest providers of cloud-based business communication solutions across Southeast Asia, India and the Middle East.
Micro Cloud Technology is a Singapore-based cloud-communications company providing global messaging and voice solutions to businesses across more than 200 countries.
Allo provides an AI-powered business phone system, primarily serving sales teams that rely on phone communication. Its core offering includes automatic call recording, transcription, and summarization, alongside drafting follow-up emails and SMS messages.
Grasshopper is a virtual phone system designed for entrepreneurs and small businesses seeking a professional business presence without dedicated hardware.
Inaani is a global retail and wholesale VoIP service provider. The company offers VoIP reseller services, enterprise solutions, and wholesale platforms for buying and selling VoIP routes. Inaani also provides hosting for softswitch, dialer, and tunneling services.
Planet Alpha is an IT services and IT consulting company that operates with a resource network covering thousands of operators in over 200 countries and regions worldwide.
Axis Communications, a Swedish company, leads in IP networking solutions, with a primary focus on network cameras. The company delivers a comprehensive suite of offerings including network video, audio, access control, and analytics.
Cal4Care, operating as CalnCall, is a provider of system integration products and services that is changing how businesses communicate with customers and partners.
Crystal Voice, operated by Crystal Net Pte Ltd, is a Singapore-based company specialising in innovative internet-based telephone services built on Voice over Internet Protocol technology.
Dialpad Connect is the unified-communications product within Dialpad's AI-powered customer-intelligence platform, combining business phone, video meetings, team messaging, and SMS for organisations of all sizes.
Happy2Call provides business communication solutions that link locations, people, and customers through a single, user-friendly system, whether a company operates from one site or ten.
Telnyx CPaaS is a US-headquartered communications platform-as-a-service provider offering programmable voice, messaging, and AI infrastructure APIs on its private global IP network.
VietNam Telecom is one of the few global VoIP solution providers with direct contracts with local incumbent telecommunications operators across many markets.
How to choose a VoIP provider in Singapore in 2026: the advantages, the pain points, and the checks
What you are actually buying
You are buying two quite separate things and they are frequently sold as one. The first is carriage: the licensed ability to originate and terminate calls on the public telephone network, to hold Singapore numbers, and to reach an emergency service. The second is software: the call flows, the menus, the queues, the recordings, the reporting, and the integration into your other systems.
Carriage is a commodity with a regulatory floor. Software is where the lock-in lives. Your dial plan, the accumulated logic of how a call is answered, routed, escalated, recorded, and reported, is built inside one vendor's platform, in their interface, and it does not export. Two years of tuning that nobody documented is the thing you will actually miss, and it is never in the comparison spreadsheet.
The good news is that Singapore hands you one strong protection and most buyers forget to use it. Number portability is mandated, which means the numbers your customers dial are yours, not the provider's, and they can leave when you do. That single right is the whole of your negotiating leverage at renewal, and it is worth more than any discount.
The advantages that justify moving to cloud telephony
The hardware problem disappears. No switchboard to maintain, no cards to fail, no engineer to book to move an extension, no end-of-life migration when the manufacturer discontinues the platform. This is a genuine and permanent reduction in a category of work nobody enjoyed.
It follows people rather than desks. Staff take their number and their extension anywhere, which for a distributed or hybrid workforce is not a convenience but the entire point. The old system assumed a person sat at a specific desk, and that assumption is gone.
Capital becomes operating expenditure, and capacity becomes elastic. Add ten users for a busy season and remove them afterwards. The old model required you to buy the switchboard for the peak and own it forever.
Integration with the systems where the work happens. Calls that log themselves against a customer record, screen-pops that show who is calling and why, and recordings attached to the case. This is where cloud telephony earns its money, and it is invisible in a feature comparison.
Reporting that was previously impossible. Queue times, abandonment, talk time, and outcomes, available as data rather than as an impression. For anybody running a support or sales team, this is the difference between managing and guessing.
Resilience without a second switchboard. A platform failure can reroute to mobiles automatically. A flooded office no longer means an unanswered main line, which for many businesses is the single most valuable property of the whole arrangement.
A regulatory floor and a real counterparty. A licensed provider is accountable for carriage, numbering, and emergency routing, and there is a regulator to escalate to. An unlicensed offshore service offers you a login and a hope.
The pain points buyers consistently underestimate
Emergency calling does not work by default, and this one can hurt somebody. A traditional line has a physical address. A cloud phone does not know where it is, so a call to emergency services may reach the wrong centre or fail to convey a location, and a device taken home or overseas makes this worse. This must be configured, tested, and documented per site, and it is the first question to ask, not the last.
Toll fraud bills to you, not to the provider. If credentials are stolen, attackers place high volumes of international calls, usually overnight or over a long weekend, and the charges are legitimate calls placed with your account. Businesses have woken to five-figure bills. Demand international dialling disabled by default, a hard spend cap, anomaly alerting, and strong authentication on every endpoint, and get the provider's liability position in writing before you assume it is theirs.
Your dial plan does not export. Menus, routing rules, business-hours logic, queue behaviour, escalation paths, and every exception added over two years live inside the vendor's platform and come out, at best, as screenshots. Rebuilding them elsewhere is the real switching cost, and it is invisible until you attempt it.
Call quality is your network's problem and they will say so. Voice is unforgiving of jitter, packet loss, and congestion. When quality is poor, the provider will point at your local network, and they will frequently be right, which does not help you. Quality of service, adequate upstream bandwidth, and a tested network are part of the project, not an afterthought.
Handsets can be locked to the provider. Phones supplied or subsidised by the provider may be provisioned so that they cannot easily be used elsewhere. A hardware estate that cannot move is a switching cost hiding in a cupboard.
Porting delays are a pressure tactic as much as a process. Number portability is mandated, but the timeline, paperwork, and coordination are real, and an incumbent with no incentive to hurry can make leaving slow and stressful. Agree the porting process, the timeline, and the cutover plan in writing before you sign, not when you are trying to leave.
Per-seat pricing does not match how phones are used. A warehouse with forty staff sharing four handsets is billed very differently under per-user pricing than under per-channel pricing, and the wrong model can double the cost of an identical service. Establish how you actually use voice before you accept the meter.
Recording is a compliance obligation, not a feature. Recorded calls containing identifiable individuals are personal data under the PDPA, which means notification, a documented purpose, a retention period, and a process for access requests. The platform will happily record everything by default, and the obligation is entirely yours.
Contact-centre platforms re-meter as you succeed. Where the price is per interaction, per minute, or per AI-handled conversation, the bill grows precisely when the business is busy, which is a very different budgeting shape from a fixed number of extensions.
What changed in 2026
AI moved into the call itself, and the questions changed with it. Real-time transcription, automatic summaries, sentiment scoring, and voice agents that handle a call end to end are now ordinary product features rather than exotic ones. The gain is genuine, particularly for support teams drowning in call notes. But a voice agent is an autonomous system speaking to your customers in your name, and the questions become ones of authority rather than accuracy: what is it permitted to promise, when must it hand to a human, what is recorded and retained, and who is accountable when it tells a customer something untrue. Get the escalation rules, the retention position, and the liability in writing.
Transcription made the PDPA position sharper. A recording was always personal data. A recording that is transcribed, summarised, indexed, and fed into an analytics or AI system is personal data being processed considerably more extensively, and often by additional sub-processors. Ask where transcripts go, who can read them, how long they are kept, whether they train the vendor's models, and confirm your notification and retention practices still match what the platform is actually doing.
Fraud got more automated, which makes the spend cap non-negotiable. Credential-stuffing and automated abuse of exposed voice endpoints continue to make toll fraud one of the most reliably expensive incidents a small business can suffer, precisely because the calls are technically legitimate. The controls are simple and cheap: international dialling off unless required, a hard spend cap, anomaly alerting, and multi-factor authentication. The reason it keeps happening is that nobody asks for them at procurement.
Licensing remains the check that separates the market. Providing or reselling IP telephony in Singapore requires an IMDA Services-Based Operations licence, granted to registered Singapore entities. An offshore service selling you a Singapore-looking number without that licence is a different proposition entirely, particularly for emergency-call routing and for number portability, and the difference will not be apparent from the website.
The diligence that actually separates providers
Verify the IMDA licence first. Confirm the provider holds a Services-Based Operations licence and that its scope covers the voice services you are buying. This determines whether they can properly hold Singapore numbers, port them, and route your emergency calls.
Test an emergency call from every site, before go-live. Not a discussion, a test, coordinated properly, confirming that the call reaches the right place with the right location. Then document how it behaves for remote and travelling staff, and how it is kept current when someone moves desk or country.
Put fraud controls in the contract. International dialling disabled by default, a hard spend cap, anomaly alerting, multi-factor authentication on every endpoint, and a written statement of who is liable if credentials are compromised. Assume nothing here, because the default answer is that the bill is yours.
Agree the porting process before you sign, not when you leave. The timeline, the paperwork, the cutover plan, and the provider's obligations. Number portability is your right, and the practical friction of exercising it is where an incumbent's leverage lives.
Ask how the dial plan comes out. Whether call flows, menus, routing rules, and recordings can be exported in any usable form. The likely answer is that they cannot, and knowing that before you build two years of undocumented logic is worth a great deal.
Match the pricing model to how you actually use voice. Per-user, per-channel, per-minute, or per-interaction. Count your real concurrent calls and your real handset-to-headcount ratio, then price it, because the wrong meter on the right service is still the wrong deal.
Design the PDPA position for recording before you switch it on. Notification, purpose, retention, deletion, access requests, and now transcripts and any AI processing of them. The platform's defaults will not do this for you.
Prove the network before you blame it. Assess bandwidth, jitter, and quality of service ahead of the rollout, so that when a call sounds poor you already know whose problem it is.
Red flags worth walking away from
No IMDA Services-Based Operations licence, or vagueness about what it covers.
Emergency calling described as supported but never demonstrated from your site.
No spend cap, no anomaly alerting, and no clear position on toll-fraud liability.
International dialling enabled by default on every extension.
Handsets supplied on terms that prevent their use with another provider.
Evasion about the porting process, its timeline, or its cost.
Call recording and transcription enabled by default with no PDPA conversation.
AI voice agents demonstrated with no stated limits on what they may promise a customer.
When cloud telephony is the wrong answer
Move to a cloud phone system in nearly all cases. The hardware model is genuinely obsolete, the flexibility is real, and for distributed teams there is no serious alternative. The category won on merit, and the discipline is in the configuration rather than in the decision.
Think much harder where the network cannot support it, because voice is unforgiving and a cheap phone system on a congested connection is a daily irritation for every person in the building. Think harder again where physical location is safety-critical, in a facility where an emergency call must convey exactly where the caller is, since that is precisely the property a cloud phone does not have by default and must be engineered to provide. And be most careful with the platform where your dial plan grows for two years, undocumented, inside an interface it cannot leave. That is not a phone system. It is a slow accumulation of switching cost, and you will only discover its size on the day you decide you would like to go somewhere else.
Frequently asked questions
Does a VoIP provider in Singapore need an IMDA licence?
Yes. Providing or reselling IP telephony services requires a Services-Based Operations licence from IMDA, granted to registered Singapore entities. It determines whether the provider can properly hold and port Singapore numbers and route emergency calls. Confirm the licence and its scope before you engage anyone.
Do emergency calls work from a VoIP phone?
Not by default. A cloud phone does not know where it physically is, so a call may reach the wrong centre or fail to convey a location, and a device taken home or overseas makes it worse. It must be configured, tested from each site, and documented before go-live.
What is toll fraud and who pays for it?
Attackers steal credentials and place high volumes of international calls, typically overnight or over a long weekend, and you pay, because the calls are legitimately placed on your account. Demand international dialling off by default, a hard spend cap, anomaly alerting, and multi-factor authentication.
Can I keep my phone number when switching VoIP provider?
Yes. Number portability is mandated in Singapore, so the numbers your customers dial belong to you. That right is your entire negotiating leverage at renewal. Agree the porting process, timeline, and cutover plan in writing before you sign, rather than when you are trying to leave.
Where does VoIP lock-in actually come from?
The dial plan. Menus, routing rules, business-hours logic, queues, and every exception added over two years live inside the vendor's platform and do not export. Rebuilding that elsewhere is the real switching cost, and it stays invisible until you try.
Is VoIP call quality good enough for business?
Yes, if the network supports it. Voice is unforgiving of jitter, packet loss, and congestion, and when quality is poor the provider will point at your local network and will often be right. Assess bandwidth and quality of service before rollout, not after the complaints.
What are the rules on recording calls in Singapore?
Recordings identifying individuals are personal data under the PDPA, so you need notification, a documented purpose, a retention period, and an access-request process. Transcription and AI summarisation extend that processing further, so confirm where transcripts go, who reads them, and whether they train the vendor's models.