SIP Trunking That
Just Works
Connect your PBX to the world with reliable, secure SIP trunks. Instant provisioning, competitive rates, and real human support when you need it.
What is SIP Trunking?
SIP trunking replaces traditional phone lines by connecting your PBX to the telephone network over the internet using the Session Initiation Protocol (SIP). Instead of paying for expensive PRI circuits or analog lines, your voice traffic travels over your existing broadband connection — cutting costs by 40–60% while adding flexibility and scalability.
Traditional Phone Lines
Expensive PRI circuits ($300–$800/month), limited channels, long provisioning times, and inflexible capacity. You pay for lines whether you use them or not.
SIP Trunking with IPComms
Free trunks with no channel fees. Pay only for usage ($0.009/min inbound) and numbers ($1.50/mo). Instant provisioning, unlimited scalability, and works with your existing PBX.
Enterprise-Grade Security
TLS signaling and SRTP media encryption on every call. E911 compliant, CNAM support, and redundant infrastructure across multiple data centers.
AI-Powered Setup Assistant
Get connected faster with our intelligent support assistant. It knows your PBX, your credentials, and exactly how to configure your trunk.
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Instant PBX Configuration
Get personalized configs for Asterisk, FreePBX, 3CX, FreeSWITCH, and more with your actual credentials.
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Real-Time Troubleshooting
Diagnose registration issues, one-way audio, and call quality problems with guided solutions.
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Number Porting Guidance
Step-by-step help through the porting process with document requirements and timeline expectations.
How do I configure my FreePBX for SIP trunking?
I'll help you set that up! Here's your personalized FreePBX trunk configuration:
TLS/SRTP Encryption
Secure signaling and media on every call
Instant Provisioning
Get your trunks in minutes, not days
99.99% Uptime
Redundant infrastructure across data centers
Human Support
Talk to real engineers who understand VoIP
How SIP Trunking Works
Replace expensive PRIs and analog lines with flexible, cost-effective SIP trunks.
Connect Your PBX
Point your existing PBX (Asterisk, FreePBX, 3CX, or any SIP-compatible system) to our SIP servers. We provide clear configuration guides for every major platform.
Get Phone Numbers
Choose local or toll-free numbers from our inventory, or port your existing numbers. Numbers are provisioned instantly through our customer portal.
Start Making Calls
Your calls route over the internet to our carrier network. You get crystal-clear voice quality, detailed CDRs, and pay only for what you use.
Compatible With Your PBX
Simple, Transparent Pricing
One simple plan with no hidden fees and no long-term contracts. Pay only for what you use.
SIP Trunking
No channel fees, no monthly minimums
High Volume?
Call centers and enterprises with significant traffic qualify for volume discounts and dedicated account management.
Contact sales for custom pricingEverything You Need
Enterprise features included with every SIP trunk.
Caller ID
Set any of your DIDs as outbound caller ID. Full CNAM support.
Failover Routing
Configure backup destinations. Calls automatically reroute if your primary PBX is unreachable.
Detailed CDRs
Complete call detail records with duration, cost, and routing info. Export anytime.
E911 Compliant
Full E911 support with location registration. Keep your team safe.
Real-Time Portal
Self-service portal for DIDs, routing, billing, and usage monitoring.
API Access
RESTful API for provisioning, CDR retrieval, and account management.
Compare SIP Trunk Providers
See how IPComms stacks up against other SIP trunking providers on pricing, features, and reliability.
SIP Trunking Guides
Step-by-step tutorials to get your SIP trunks configured and running.
SIP Trunking FAQ
Common questions about SIP trunking and how IPComms works.
What is SIP trunking?
SIP trunking is a method of sending voice and other communications over the internet using the Session Initiation Protocol (SIP). It replaces traditional analog phone lines and expensive PRI circuits by connecting your PBX phone system to the public telephone network (PSTN) through a broadband internet connection. This eliminates the need for physical phone lines and typically reduces calling costs by 40–60%.
How much does SIP trunking cost?
IPComms SIP trunks are free — there are no per-channel or per-trunk fees. You only pay for usage: outbound calls to the USA/Canada cost $0.010/min, inbound local calls cost $0.009/min, and local DIDs are $1.50/month. There are no contracts and no monthly minimums.
What PBX systems work with SIP trunking?
SIP trunking works with any SIP-compatible PBX system including Asterisk, FreePBX, 3CX, Microsoft Teams (Direct Routing), Cisco CUBE/CUCM, Avaya, Genesys Cloud, FreeSWITCH, and most other modern IP-PBX platforms.
What is the difference between SIP trunking and VoIP?
VoIP (Voice over Internet Protocol) is the broad technology for making phone calls over the internet. SIP trunking is a specific application of VoIP that connects an on-premises or cloud PBX to the telephone network. Think of VoIP as the umbrella term, and SIP trunking as the bridge between your business phone system and the outside world.
How many SIP trunks do I need?
With IPComms, you don't need to worry about trunk counts. Our service has no per-channel fees — you can make as many simultaneous calls as your internet bandwidth supports. A general rule of thumb is that each concurrent call requires about 100 Kbps of bandwidth.
Can I keep my existing phone numbers?
Yes. IPComms supports number porting for local and toll-free numbers across the United States. The porting process typically takes 7–14 business days for local numbers and 5–10 business days for toll-free numbers. You can start using IPComms immediately with new numbers while your existing numbers are being ported.
Ready to upgrade your voice infrastructure?
Get started in minutes with instant provisioning. No contracts, no commitments.