In an era of generic, outsourced cloud providers, DC-Apex Integrators (S) Pte Ltd stands apart as a cornerstone of Singapore’s telecommunications landscape. Established in 2006, we have spent over two decades mastering the art of IP-PBX integration and high-performance VOIP hosting.
As a licensed Service-Based Operator (SBO), we don’t just resell services; we own the infrastructure. We bridge the gap between complex hardware like the Grandstream UCM6300 series and the practical needs of local SMEs, ensuring your business stays connected with 99.9% reliability, whether your team is in the office, working from home, or across the border in Johor Bahru.
Virtual Office PBX & Mobile Integration
Don’t let your personal mobile number be your only business contact. Our Smart Call Redirection service allows you to port your main corporate number to our managed infrastructure, giving you full control over how you receive, route, and manage your business calls.
Dedicated Hosted UCM
Why settle for a “shared” cloud PBX where you share resources with hundreds of other companies? Our Dedicated Hosted UCM service provides a private, isolated instance of the Grandstream UCM6300 series within our carrier-grade data centre. You get 100% of the processing power, custom security configurations, and full administrative control—all without the heat, noise, or maintenance of physical hardware in your office.
Carrier-Grade Co-location
Secure your critical IT infrastructure in a Tier-3 environment designed for maximum uptime. In partnership with Epsilon Global Communications, DC-Apex offers co-location services that combine physical security with world-class connectivity. Benefit from redundant N+1 power, precision cooling, and direct access to DC-APEX partner’s global network fabric. We provide the “remote hands” and technical expertise that standard data centres lack.
SIP User Extensions
Singapore +65 or WorldWide DID Number
Modern business happens everywhere. Our SIP User Extension service gives your team a professional Singapore +65 business identity that follows them worldwide. Optimized for the Grandstream Wave app and desktop IP phones, our extensions offer crystal-clear voice quality and instant activation. It’s the ultimate cost-saving solution for hybrid teams, remote specialists, and solopreneurs who need to maintain a local presence from any internet connection.
High-Performance Internet SIP Trunking
(5 Channels Starter Plan)
The backbone of your office communication. Our SIP Trunking service is engineered for businesses that demand high-capacity voice termination. Starting with a 5-channel concurrent call capacity, our trunks are the perfect match for the Grandstream UCM6302 and other IP-PBX systems. We support full number porting from Singtel, Starhub, and M1, allowing you to upgrade your technology while keeping your established business numbers.
Business Hunting Line Service
Singapore +65 or WorldWide DID Number
Never miss a client inquiry again. Our digital Hunting Line service provides the classic functionality of a multi-line “hunt group” at a fraction of traditional telco costs. By utilizing the compact Grandstream HT802 FXS Gateway, we convert our high-quality SIP signal into a reliable 2-line (or more) hunting system for your reception desk. Professional, reliable, and starting at just $10 per line.
Over 20 Years of Technical Precision. One Point of Contact.
When you partner with DC-Apex, you aren’t talking to a rotating door of sales agents. You are working directly with an integrator who has been in the trenches of Singapore’s VOIP industry since 2006.
We understand the technical nuances of IMDA compliance, the intricacies of local ISP routing, and the specific hardware requirements of the Grandstream GRP2614 and UCM series. Our “solo attack” philosophy means you get faster deployments, deeper technical knowledge, and a solution that is engineered to last—not just sold to meet a monthly quota.
Technical Compatibility & FAQ
Our systems are pre-optimized for Singtel, Starhub, M1 and Myrepublic fiber networks. We ensure that every deployment—from a single SIP extension to a 500-user Hosted UCM—is configured with the correct codecs (G.711/G.729) and firewall traversal settings to ensure 24/7 crystal-clear communication.
Featured Services
SIP User Extension with DID Number
Secure Co-Location Services
Business Hunting Lines
Reliable analog-to-digital bridge for high-volume client inquiries.
SBO-Licensed SIP Trunks
High-capacity, 5-channel voice backbone for professional business communication.
+65 Mobile Extensions Remote Extensions
Professional Singapore numbers with seamless Wave App mobile integration.
Managed Co-location
Tier-3 data centre housing for your critical IT infrastructure.
Dedicated Hosted UCM
Your private Grandstream cloud instance with total admin control.