Retail • 4 sites
TDM to Cloud PBX Migration
Replaced aging E1 lines with SIP, ported numbers, and moved 160 extensions to a cloud PBX. Cut telco spend by ~35% with no business downtime.
Engineer‑Led SIP • Carrier‑Grade Design
🛠 Interoperability First. Protocol‑Level Expertise. Global Deployments.
We design, deploy, and operate modern SIP infrastructures — from SBCs and Cloud PBX to Direct Routing and WebRTC — with deep packet‑level understanding and zero‑downtime migrations from E1/T1 to SIP.
What you get
Reliable voice that just works
Crystal‑clear calls, stable routing, and quick recovery when something goes wrong.
Cloud & on‑prem
Seamless PBX & SBC deployments
We set up, migrate, and manage your phone system without disrupting your business.
Security & compliance
Protected by design
Fraud prevention, access controls, and best‑practice hardening out of the box.
Scale
Built for growth
Ready for multiple sites, remote teams, and international numbers.
Clear outcomes, not buzzwords. We make phones ring and keep them ringing.
Solutions
End‑to‑end services from architecture and deployment to monitoring and lifecycle operations. Multi‑vendor, multi‑carrier, and cloud‑ready.
SIP Telephony Integration
Design, policy routing, number normalization, codec negotiation, and SIP trunking across carriers with precise troubleshooting.
- Topology hiding & routing logic
- RTP anchoring & media relays
- SIP over TLS & SRTP
SBC Deployment
Hardened Session Border Controllers on‑prem, cloud, or hybrid with HA, DoS protections, and interop across vendors.
- Policy & topology design
- High‑availability & clustering
- Multi‑region geo routing
Cloud PBX & Contact Centers
Carrier‑grade Asterisk stacks for IVR, queues, call recording, analytics, and omni‑channel integrations.
- Multi‑tenant design
- Auto‑provisioning & APIs
- Observability & SLAs
E1/T1 → SIP Migrations
Zero‑downtime cutovers with media/signaling interworking and protocol translation where required.
- Gateway design & testing
- Numbering plan alignment
- Pilot, cutover, rollback plans
Microsoft Teams Direct Routing
Certified SBC interop and routing between Teams and your SIP core for true enterprise calling.
- SIP URI & voice routing
- Number management & policies
- Quality & compliance controls
WebRTC Integration
SIP‑over‑WebSockets, ICE/STUN/TURN, and secure browser clients for modern contact flows.
- Identity & auth flow
- QoS and NAT traversal
- Embedded softphone UX
Our Platform
We build on proven, open technologies to keep your costs predictable and your options open. The stack is reliable, well‑supported, and extensible — so you aren’t locked in.
- Flexible call flows tailored to your business
- IVR, queues, voicemail, and call recording as needed
- Works with your carriers and tools (Teams, CRMs, contact centers)
- Designed for high availability and easy maintenance
Powered by Asterisk and leading SBC vendors.
Typical outcomes
- • Lower monthly telco costs
- • Fewer dropped calls and faster call setup
- • Clear reporting for capacity and quality
- • A simple path to add locations or users
Why ClearComs
Protocol‑Level Expertise
SIP messages, SDP, RTP flows — we tune systems at packet granularity.
Interoperability First
Multi‑vendor SBCs, carriers, softphones, and CCaaS platforms working as one.
Security & Resilience
Topology hiding, rate‑limits, fraud controls, and HA with failover runbooks.
Global Deployments
Multi‑region routing, latency optimization, and compliance‑minded design.
Technology Ecosystem
We integrate with leading vendors and open‑source projects. Below are examples — we support many others.
Recent Projects
Discuss your project →Financial Services
SBC Hardening & Call Quality
Deployed an SBC front‑end, tightened access, and optimized routing. Result: fewer call drops and clearer audio for remote traders.
Remote Contact Team
Teams Direct Routing Enablement
Connected Microsoft Teams to the customer’s SIP core. Staff can answer business calls from anywhere while keeping corporate numbers.
How We Work
1) Assess
We review your current phone setup, carriers, numbers, and call flows.
2) Plan
Clear migration plan with timelines, testing, and rollback options.
3) Deliver
We build, cut over, and monitor — keeping your business running.
4) Support
Ongoing care with SLAs, updates, and change management.
Let’s Modernize Your Voice
Tell us about your environment and goals. We’ll respond with options, timelines, and an engineering‑driven approach.
📧 hello@clearcoms.net
🌐 www.clearcoms.net
🕘 Mon–Fri, 9:00–18:00 (GMT+8)