Singapore VOIP buyers usually weigh more than seat pricing. The stronger providers can explain SIP trunk redundancy, number porting from incumbent carriers, cloud-PBX call quality on local circuits, and how their platform handles IMDA compliance, emergency dialling, and call recording for regulated industries.
8x8 Work is a cloud unified communications platform combining business phone, video meetings, team chat, and SMS in a single application. The service runs on 8x8's global voice network and serves businesses from small offices to multinationals, supporting H...
Aircall is an AI-powered cloud phone and customer communications platform serving over 22,000 businesses globally. The platform deploys AI virtual agents capable of autonomously handling inbound calls around the clock, alongside AI assistants providing real...
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. The p...
AVOXI provides enterprise cloud communications with international voice coverage spanning over 150 countries. Its platform offers toll-free numbers, local DIDs, and two-way voice numbers managed through a centralised SaaS interface. AVOXI integrates with le...
Axi Communications is a Singapore-based telecommunications and IT infrastructure company providing enterprise communication systems, unified communications, and managed network services. The company delivers tailored connectivity solutions including VoIP, v...
Axilant Technologies is a Singapore-based system integrator and managed-services provider focused on enterprise networking, unified communications, structured cabling, and audio-visual integration. The company designs and deploys LAN/WAN networks, IP teleph...
Calilio is a cloud-based virtual phone system targeting small and mid-sized businesses, sales teams, and customer-support operations. The platform offers business phone numbers in 100+ countries, shared inboxes, IVR menus, call recording, voicemail transcri...
Call4tel is a Singapore-based supplier of 3CX-certified PBX appliances and VoIP gateways for business telephony. Its hardware line includes on-premise appliances pre-installed with 3CX and Debian, supporting up to 800 users, as well as analog, digital, and...
Comcast Business VoiceEdge is a cloud-hosted PBX service from Comcast Business targeting US-based small and mid-sized businesses. The product offers business phone numbers, auto-attendant, voicemail-to-email, hunt groups, mobility apps, audio conferencing,...
Crexendo is a US-based cloud communications provider offering hosted UCaaS, contact-centre, and SIP trunking services, plus the Crexendo NetSapiens platform that powers other UC service providers globally. The company has a dual business model: directly sel...
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. The company focuses on international long-di...
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. The product runs on Dialpad's proprietary AI...
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. The platform delivers hosted business phone numbers, IVR, call recording, mobile app...
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. The p...
Genesys Cloud CX is a cloud-native contact-centre platform delivering omnichannel customer engagement across voice, email, chat, SMS, social media, and messaging apps. The platform includes workforce engagement management (forecasting, scheduling, quality m...
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. The product targets small and mid-sized businesses, professional-services...
HBC Singapore is a Singapore-licensed services-based telecommunications operator focused on international voice termination, SIP trunking, and wholesale carrier services. The company operates within the regional carrier ecosystem, providing A-Z internationa...
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. Founded in 1998, the company deli...
KrispCall is a cloud-based virtual phone system aimed at sales, support, and operations teams in SMBs and growing companies. The platform offers business numbers in 100+ countries (local, toll-free, mobile, national), unified call inbox, shared inbox, IVR,...
LWS Network is a Singapore-licensed services-based telecommunications operator providing international voice termination, SIP trunking, and wholesale carrier services. The company operates within Singapore's IMDA-licensed services-based operator (SBO) frame...
Maven Lab is a Singapore-based Communications Platform as a Service (CPaaS) provider with over a decade of experience. It offers programmable cloud communication APIs and solutions including SMS, voice, video, two-factor authentication, omnichannel messagin...
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 hosp...
One-Net Communications is a Singapore-based unified-communications service provider and reseller for major UC platforms including Yeastar, Mitel, Alcatel-Lucent Enterprise, and NEC, along with Fanvil and Yealink endpoints, Ruijie networking, and Microsoft T...
PCIN Link System is a Singapore-licensed services-based telecommunications operator providing international voice termination, SIP trunking, and wholesale carrier services. The company operates within the IMDA-licensed SBO framework, focusing on least-cost-...
Confirm local voice compliance first. Business VoIP touches numbering, emergency calling, call recording, retention, and sometimes regulated customer communications. Ask whether the provider supports IMDA-compliant IP telephony, Singapore number portability, emergency services routing, and clear ownership of SIP trunks. If the service uses an overseas platform, confirm where call records and recordings are stored.
Match the phone architecture to your operating model. Some buyers need cloud PBX for simple seat-based calling. Others need SIP trunking into an existing PBX, Microsoft Teams Phone, Zoom Phone, or a contact-centre system. The right provider should explain the tradeoff between hosted PBX, pure SIP trunks, Teams Direct Routing or Operator Connect, BYOC, and hybrid migration from legacy PSTN.
Pay attention to Singapore numbering. Buyers often care about 6-series fixed-line numbers, 3-series IP telephony ranges, virtual phone numbers, number porting, and caller-ID presentation. These details affect brand trust and operational continuity. Ask whether new numbers and ported numbers have different pricing or lead times, and whether the provider can preserve current call flows during migration.
Test quality before full rollout. Voice problems are visible immediately to customers. Run a pilot with real users, real headsets, real network paths, and failover scenarios. Check jitter, packet loss, mobile app quality, call recording, CRM screen-pop, queue behaviour, and support escalation before porting every number.
Corporate VoIP is widely used in Singapore, but public voice services and numbering are regulated. Buyers should confirm that their provider has the appropriate licensing, supports emergency calling, and handles Singapore numbering and records appropriately.
Check support for 3-series and 6-series numbers, number porting, virtual phone numbers, caller-ID presentation, emergency calling, and whether ported numbers are priced differently from new numbers.
SIP trunking fits businesses keeping an existing PBX or contact centre. Cloud PBX fits simpler seat-based calling. Teams Phone fits Microsoft-centric businesses that want calling inside Teams, but still need a carrier or operator model for PSTN connectivity.