SIP Trunking
Streamline your communications, cut costs and scale your business with Session Initiation Protocol (SIP) Trunking solutions from Advanced Communication Systems (ACS) — your trusted national telecom partner for modern, reliable connectivity. Our SIP trunking services replace outdated phone lines with a more innovative, more flexible digital solution that supports crystal-clear voice, video and data transmission across your organization. Whether you're managing a small office or coordinating a multi-site network, ACS delivers secure, high-performance SIP trunking designed to keep your business connected, efficient and ready for growth.

Key Advantages of SIP Trunking
Some of the benefits of SIP trunking are:
Reduced Communication Costs
Traditional phone lines charge per connection, whereas SIP trunking transmits calls over your internet connection, resulting in cost savings. You'll eliminate long-distance fees, minimize maintenance costs, and consolidate voice and data services under one streamlined provider.

Scalability Without Limits
Forget the hassle of adding or removing phone lines as your business changes. SIP trunking services from ACS allow you to scale instantly — adding new channels with a simple configuration rather than a hardware installation. This flexibility makes it an ideal SIP trunking solution for growing businesses or agencies with fluctuating call volumes.

Business Continuity and Reliability
In the event of an outage, SIP trunking automatically reroutes calls to backup numbers, remote locations or mobile devices — ensuring your business stays reachable at all times.

Superior Call Quality and Performance
ACS SIP trunks are optimized for high-definition voice and data transmission, offering crisp, clear calls and minimal latency. Our team proactively monitors call quality to ensure consistent performance across your network, providing your team and customers with a professional, seamless experience.

What Is SIP Trunking?
SIP Trunking enables your business phone system to use the internet instead of traditional telephone lines for voice communication. It acts as the digital bridge between your Voice over Internet Protocol (VoIP) phone system and the public switched telephone network (PSTN), eliminating the need for costly analog connections.
In simple terms, SIP trunking enables your team to make and receive calls using your existing internet connection, eliminating the need for bulky equipment or multiple phone lines. Each "trunk" represents a virtual line capable of handling multiple simultaneous calls, providing the bandwidth and scalability your business needs to communicate without limits.
At ACS, we integrate SIP trunking solutions with your existing Avaya, Cisco, Mitel or AT&T systems, ensuring seamless interoperability and superior reliability.
The ACS Process for Streamlined SIP Trunking Solutions
As one of the leading SIP trunking providers, ACS ensures that your solution is tailored to your needs.
Here's how our process works:
Configuration
We assess your current communication setup and identify opportunities for cost reduction, productivity improvement and performance optimization.
Implementation
From hardware installation to network configuration, ACS manages every technical detail for a seamless transition.
Training
After your solution is fully implemented, our experienced technicians will deliver thorough training to your team.
Support
Once your system is live, we provide ongoing monitoring, updates and dedicated customer support — so you can stay focused on running your business, not your phones.
Free guide: SIP Trunking 101
How it works: A Comprehensive Guide
Are you looking to increase your communications efficiency without incurring high hardware costs? Fortunately, moving away from legacy systems to SIP Trunking can achieve just that.
Nationwide and local client success

- Cloud Call Center with 200 agents
- Cisco UCM-G Secure Cloud Phone Solution for 3,300 users
- SIP Trunking to support over ten million minutes
- ACD

- Multiple Avaya UC Systems
- Infrastructure upgrades
- Managed services contract
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- Multiple Avaya UC Systems
- Infrastructure upgrades
- Managed services contract
- Private IP Cloud interface
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- Avaya Hybrid IP Solution with
Cloud Backup - Managed services contract
- SIP Trunking for 150 users
Upgrade to Smarter, More Reliable Communications
Your business deserves more than outdated phone lines. SIP Trunking from Advanced Communication Systems gives you the flexibility, security and cost savings of tomorrow's technology — today. Contact us to request a free consultation and see how our services can help you modernize your communications.