Keep Your Business Numbers, Port to Firetell SIP with Zero Downtime
Transfer existing 1800/1900 hotlines, local landline DIDs, and SIP trunks into Firetell seamlessly. Automated LOA verification, zero dropped calls, and instant fallback routing.
Engineered for zero disruption and guaranteed business continuity
Move single DIDs or thousands of branch numbers smoothly with dedicated telecom engineers.
Zero-Downtime Dual-Fork Cutover
Your existing carrier routes remain active until Firetell confirms live media handshake. Not a single inbound customer call is lost.
Digital LOA & Fast FOC Clearance
1-click digital Letter of Authorization dispatch accelerates Tier-1 telco approval and Firm Order Confirmation (FOC).
1800/1900 Hotlines & Local DIDs
Full coverage for Vietnam toll-free (1800/1900), major city DIDs (024 Hanoi, 028 HCMC, 0236 Da Nang), and global numbers in 100+ countries.
Bring Your Own Carrier (BYOC)
Keep your existing telco contracts if preferred. Interconnect your current SIP trunks directly to Firetell via SIP URI / TLS Gateway.
Immediate Call Flow & IVR Sync
Pre-configure your smart IVR, Voice AI bots, and Agent queues so the moment cutover completes, calls route instantly.
Concierge Porting Engineers
Dedicated telecom specialists manage carrier rejections, complex multi-site cutovers, and SLA commitments from end to end.
Legacy Telco Porting vs Firetell Cloud Carrier Engine
Why forward-thinking enterprises migrate their mission-critical numbers to Firetell.
Universal Compatibility Across Global & Local Telecom Networks
Seamlessly interconnect with any Tier-1 telecom provider, legacy PBX, or cloud contact center.
Vietnam Local Landlines & DIDs
024 (Hanoi), 028 (Ho Chi Minh City), 0236 (Da Nang), and all 63 provincial area codes.
National Toll-Free & Hotlines
1800 (Caller Toll-Free) and 1900 (Customer Service / Revenue Sharing) nationwide numbers.
Mobile SIP & Virtual Numbers
09x, 08x, 07x, 03x mobile numbers converted to SIP trunk channels for high-volume outbound campaigns.
Global Numbers (100+ Countries)
US/Canada (+1), UK (+44), Singapore (+65), Australia (+61), Japan (+81), and European DIDs.
4 Simple Steps to Seamless Cutover
1. Eligibility & Bill Audit
Submit your target numbers and latest telco invoice via the Console to verify carrier portability.
2. Digital LOA Signature
Sign the automated Letter of Authorization electronically. We submit directly to the losing carrier.
3. Pre-Configure Call Flows
Build your IVR routing, Voice AI bots, and Agent queues in advance while awaiting the FOC date.
4. Scheduled Live Cutover
At the agreed maintenance window, traffic transfers to Firetell with active test calls and zero dropped seconds.
Frequently Asked Questions
Will our customer calls drop or experience downtime during the porting cutover?
No. Firetell utilizes a zero-downtime dual-fork routing protocol. Your existing carrier routes remain active until Firetell confirms live media transmission, ensuring zero dropped calls during the switch.
What documents do we need to provide for business number porting?
You only need a signed Letter of Authorization (LOA) — which can be generated and signed digitally in our console — and a copy of your most recent telecom bill confirming ownership of the numbers.
Can we connect our existing carrier SIP trunk without porting ownership (BYOC)?
Yes! With Firetell BYOC (Bring Your Own Carrier), you can keep your existing telecom contracts and connect your SIP trunks or SBC (Cisco, Ribbon, AudioCodes, Asterisk, FreeSWITCH) directly to Firetell via SIP URI / TLS Gateway.
How long does a standard number porting process take?
Standard geographic DIDs and toll-free numbers typically take 3 to 7 business days depending on the losing carrier's FOC turnaround. Complex multi-branch batch migrations are scheduled on your preferred maintenance date.