50-70% Cost Savings
Compared to traditional lines
Service
Enterprise SIP Trunks Secure, Flexible & Cost-Effective
Streamline your business communication with our professional SIP Trunking services. Replace expensive traditional phone lines with flexible, scalable internet-based calling that works with any PBX system and delivers significant cost savings.
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What are SIP Trunks?
SIP Trunks are virtual phone lines that replace traditional physical phone lines, enabling your business to make and receive calls over the internet. This modern approach to business communication offers superior flexibility, significant cost savings, and advanced features that traditional phone systems simply cannot match.
Instant Scaling
Add/remove lines in minutes
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Comprehensive SIP Trunk Features
Our SIP Trunking platform delivers enterprise-grade capabilities designed to enhance your business communications while reducing costs and complexity.
01Customised Plans & Pricing Flexibility
02Broad PBX System Compatibility
03Exceptional High Availability & Redundancy
04Advanced Fraud Protection & Security
05Multiple Connectivity Options
06Open-Source & Asterisk Expertise
07Global Phone Number Provisioning
08Advanced Cloud Features Integration
09Dedicated Expert Support
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Benefits of COMSYS SIP Trunks
Transform your business communications with enterprise-grade SIP Trunks that deliver measurable improvements to your operations and bottom line.
Significant Cost Savings
Dramatically reduce your telecommunication expenses by eliminating expensive traditional phone line infrastructure and reducing per-minute calling costs. SIP Trunks typically cost 50-70% less than traditional PSTN lines while providing superior features and flexibility.
Instant Scalability
Scale your communication capacity up or down instantly based on business needs. Add or remove lines and services within minutes through our web portal, without waiting for technician visits or hardware installations. Perfect for seasonal businesses or rapid growth scenarios.
Enhanced Reliability & Call Quality
Experience crystal-clear HD voice quality and fewer service disruptions compared to traditional phone systems. Our advanced network infrastructure and redundancy options ensure superior reliability and call quality that enhances professional communications.
Future-Proof Technology Enhancements
Stay ahead of communication trends with regular feature updates and new capabilities. Add advanced cloud features, AI-powered analytics, integration with business applications, and emerging communication tools as they become available.
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Compatible with Leading PBX Systems
Our SIP Trunks work seamlessly with any PBX system that supports SIP or IAX2 protocols. We provide detailed configuration guides and expert support for smooth integration.
Asterisk
3CX
FreePBX
Avaya
Cisco
Grandstream
Yealink
Sangoma
Elastix
FusionPBX
OpenSIPs
Don't see your PBX system listed? Contact our experts for compatibility confirmation.
Check Compatibility／ 05
Flexible SIP Trunk Pricing
Build a custom plan that fits your exact needs and budget. Pay only for what you use with transparent, predictable pricing.
Contact us for current pricing and a custom quote tailored to your requirements
- Choose local NZ phone number or port existing
- Includes one calling channel
- Unlimited free inbound calls
- Optional AI Voice Features
- Pay-as-you-go calling rates or bundles
Global Calling Bundles
NZ & Australia fixed/mobiles + 50+ countries
NZ & Australia fixed/mobiles + 50+ countries
NZ & Australia fixed/mobiles + 50+ countries
NZ & Australia fixed/mobiles + 50+ countries
Need a custom solution? We can create SIP Trunk plans tailored to your specific requirements.
- SIP Trunk Line
- Add-On Services
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Frequently Asked Questions
What exactly are SIP Trunks and how do they work?
SIP (Session Initiation Protocol) Trunks are virtual phone lines that enable voice communication over the internet instead of traditional copper phone lines. They connect your PBX system to the public telephone network through your internet connection, allowing you to make and receive calls using VoIP technology while maintaining compatibility with traditional phone numbers and calling features.
Will SIP Trunks work with my existing PBX system?
Most likely, yes! Our SIP Trunks are compatible with virtually any PBX system that supports SIP or IAX2 protocols. This includes popular systems like Asterisk, 3CX, FreePBX, Avaya, Cisco, and many others. We provide detailed configuration guides and technical support to ensure smooth integration with your existing infrastructure.
How many concurrent calls can I make with SIP Trunks?
The number of concurrent calls depends on the number of calling channels you purchase. Each channel supports one simultaneous call. You can start with as few or as many channels as needed and easily add more through our web portal as your business grows.
What internet connection speed do I need for SIP Trunks?
Generally, you need about 100 kbps of bandwidth per concurrent call for good quality voice communication. For example, if you need 10 concurrent calls, you should have at least 1 Mbps of dedicated bandwidth. We recommend having additional bandwidth for other internet activities and redundancy.
Can I keep my existing phone numbers?
Yes! We offer seamless number porting services that allow you to transfer your existing phone numbers to our SIP Trunk service. The porting process typically takes 1-3 business days, and we handle all the coordination with your previous provider to ensure no service disruption.
What happens if my internet goes down?
We offer several redundancy options including SIP failover to backup internet connections, call forwarding to mobile numbers, and voicemail-to-email services. These features ensure your business communications continue even during internet outages, minimizing disruption to your operations.
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Ready to Transform Your Business Communications?
Join thousands of New Zealand businesses saving money and improving communication with our SIP Trunk solutions. Start your free trial today and experience the difference.
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Contact COMSYS
Ready to get your IT sorted? Get in touch with our New Zealand team for professional IT support and solutions.
Get in Touch
Whether you're a business needing comprehensive IT support or a home user requiring technical assistance, our team is ready to help with customized solutions for your needs.
- Auckland, New Zealand (Nationwide Support)
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