You can run the WhatsApp-to-PBX bridge yourself, or Blue Chip Technologies Ltd. can manage it for you. Either way, you keep your own WhatsApp number—you register it on your own device, and Blue Chip never holds or controls it. The only difference is who looks after the gateway software: your team or ours.
This matters once your WhatsApp number outgrows the mobile app. A single handset handles one call at a time. That's fine for a solo operator, but the moment two customers ring at once, someone gets a busy signal. Queues, transfers, recordings, business-hours routing—none of that exists on the app. The fix isn't to ditch WhatsApp; it's to bridge those voice calls into a proper IP PBX so they behave like any other trunk. The SIP for WhatsApp solution does exactly that, and you've got two ways to deploy it.
The choice is about the gateway, not your number
Let's be clear up front: your WhatsApp number stays yours in both models. You scan a QR code on your own device to link the app to the gateway. Blue Chip Technologies Ltd. doesn't host, register or manage your number—ever.
What differs is who runs the gateway itself: the software that converts WhatsApp voice traffic into a SIP trunk your PBX can understand. Think of it like choosing between self-hosting your email server or paying someone else to keep it patched and monitored. The mail still arrives at your domain either way.
Self-managed: running the bridge yourself
If your organisation already has in-house IT staff comfortable with SIP trunks, firewall rules and the occasional late-night restart, self-managing may suit you.
What you're responsible for:
- Provisioning and maintaining the gateway server (on-premises or cloud VM).
- Keeping the software updated and applying security patches.
- Monitoring uptime and troubleshooting call-quality issues.
- Configuring your PBX trunk settings, codecs (Opus, G.722, G.711) and TLS certificates.
- Scaling capacity when call volume grows—remember, capacity is sized in blocks of 2 concurrent calls per number.
Who this typically suits:
- Businesses with a dedicated IT or telephony team.
- Organisations that prefer to keep all infrastructure under their own roof for policy or compliance reasons.
- Teams already running 3CX, Asterisk/FreePBX, PortSIP or similar platforms and comfortable extending them.
Self-managed doesn't mean unsupported. Blue Chip can still help with initial setup guidance and answer technical questions. But day-to-day upkeep is on your plate.
Blue Chip-managed: we run the gateway, you keep the number
Prefer to hand off the plumbing? In the managed model, Blue Chip Technologies Ltd. provides the gateway infrastructure and handles setup, monitoring and maintenance. Your team connects to it as a SIP trunk—just like any hosted provider—and gets on with taking calls.
What Blue Chip handles:
- Gateway provisioning and ongoing software updates.
- Server monitoring and incident response.
- Capacity adjustments when you need more concurrent call slots.
- Codec negotiation, opting for HD audio (Opus 16 kHz) where possible.
What you still do:
- Register your own WhatsApp or WhatsApp Business number by scanning the QR code on your device.
- Configure your PBX dial plan, ring groups, queues and call-recording policies.
- Decide how calls route—direct extension, queue, AI receptionist (note: DTMF IVR menus aren't supported).
Who this typically suits:
- Small-to-medium businesses without a full-time telephony admin.
- Organisations that want predictable operations without learning another system.
- Teams that'd rather spend time on customers than on server patches.
What is identical either way
Regardless of who manages the gateway, the capabilities are the same:
| Feature | Self-managed | Blue Chip-managed |
|---|---|---|
| Your WhatsApp number, registered on your device | ✓ | ✓ |
| Inbound calls ring desk phones, softphones, WebRTC clients | ✓ | ✓ |
| Ring groups, queues, overflow routing | ✓ | ✓ |
| Blind and attended transfers with presence | ✓ | ✓ |
| Call recording and CDR via your PBX | ✓ | ✓ |
| Business-hours schedules and after-hours announcements | ✓ | ✓ |
| Outbound auto-sensing (tries WhatsApp first, falls back to landline) | ✓ | ✓ |
| Simultaneous calls on the same number (blocks of 2, minimum 2) | ✓ | ✓ |
That last row is the scalability point worth repeating: the regular WhatsApp app handles one call at a time. The SIP bridge supports concurrent calls on the same number, sized in blocks of 2. Three numbers means a minimum of six concurrent calls. That's what turns a single handset into a proper call centre channel.
Questions to answer before you choose
Before you decide, run through these with your team:
- Do we have someone who can maintain a SIP gateway long-term? If not, managed is probably the simpler path.
- Are there compliance or data-residency rules that require us to host infrastructure ourselves? If yes, self-managed keeps everything on your hardware.
- How quickly do we need to scale? Managed lets you add capacity without spinning up new servers.
- What's our appetite for troubleshooting ogg-opus codec mismatches at 7 a.m.? Be honest.
There's no wrong answer—just a better fit for your situation.
Frequently asked questions
Does Blue Chip ever hold or control my WhatsApp number?
No. You register your own number on your own device by scanning a QR code. Blue Chip provides and (optionally) manages the gateway, not the number.
Can I switch from self-managed to Blue Chip-managed later?
Yes. The WhatsApp number doesn't change, and your PBX trunk configuration stays largely the same. It's a matter of pointing to a different gateway.
How many calls can run at once?
Capacity is sized in blocks of 2 concurrent calls per WhatsApp number, with a minimum of 2. You can add blocks as volume grows.
Which PBX platforms work with this?
Any SIP-based system—3CX, Asterisk/FreePBX, PortSIP and similar platforms.
If your WhatsApp line is getting busier and one-call-at-a-time isn't cutting it anymore, bridging to your PBX is the logical next step. Whether you run the gateway yourself or let Blue Chip Technologies Ltd. manage it, the outcome is the same: proper call handling on a number your customers already know.
Blue Chip Technologies Ltd. is based in Trinidad & Tobago, with local support available there and remote assistance for international clients. Visit the SIP for WhatsApp solution page to see how it works and request a quote—or reach out directly if you'd rather just talk it through.
Get in touch:
- Phone: 1 (868) 609-2288
- WhatsApp: wa.me/18686092288
- Email: [email protected]
- Contact page: bluechiptt.com/contact
