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Enterprise Voice Connectivity

SIP Trunking
Services

Cost-effective voice connectivity with flexible routing, number portability, and geographic number options across the UK. Connect your PBX to the world.

70%

Cost Savings

99.9%

Uptime SLA

24/7

Support

5min

Setup Time

What is SIP Trunking?

SIP (Session Initiation Protocol) Trunking replaces traditional phone lines with internet-based voice connectivity. It connects your business phone system to the public telephone network through your internet connection.

Replace Traditional Lines

Eliminate expensive ISDN and analogue phone lines

Scale Instantly

Add or remove channels on demand without engineer visits

Keep Your Numbers

Port existing numbers or choose new geographic numbers

Simple Setup

Our SIP trunking service integrates seamlessly with your existing PBX system. No hardware changes required.

Get Started

SIP Trunking vs Traditional Lines

See why businesses are switching from traditional phone lines to SIP trunking

Traditional Lines

ISDN/Analogue phone lines

  • High monthly line rental
  • Expensive call charges
  • Engineer visits required
  • Limited scalability
  • Fixed capacity
  • Hardware dependency

SIP Trunking

Internet-based voice connectivity

  • Up to 70% cost savings
  • Inclusive call packages
  • Instant online setup
  • Unlimited scalability
  • Pay for what you use
  • Works with any PBX

SIP Trunking Features

Enterprise-grade features designed to enhance your business communications

Cost Savings

Reduce your phone costs by up to 70% compared to traditional ISDN lines. Pay only for the channels you need.

Instant Scalability

Add or remove channels instantly through our online portal. Perfect for businesses with fluctuating call volumes.

Geographic Numbers

Choose local area codes from across the UK to establish a local presence in multiple regions.

Number Porting

Keep your existing numbers when switching to SIP. We handle the entire porting process seamlessly.

Intelligent Routing

Advanced call routing ensures optimal call quality and automatic failover for maximum reliability.

Real-time Analytics

Detailed call reporting and real-time monitoring through our comprehensive management portal.

Perfect For Your Business

SIP trunking works for businesses of all sizes and industries

Growing Businesses

Scale your communications as you grow without the limitations of traditional phone lines.

Call Centers

Handle high call volumes efficiently with unlimited concurrent channels and advanced routing.

Multi-location

Connect multiple offices with unified communications and centralized management.

Technical Requirements

Everything you need to know to get started with SIP trunking

Internet Connection

  • • Stable broadband connection
  • • 100kbps per concurrent call
  • • Quality of Service (QoS) recommended
  • • Low latency for best call quality

Compatible Systems

  • • Any SIP-compatible PBX
  • • Yeastar, 3CX, FreePBX
  • • Cisco, Avaya, Panasonic
  • • Cloud-based systems

Need Help Getting Started?

Our technical team can assess your current setup and recommend the best SIP trunking configuration for your business. We provide free consultations and setup assistance.

Ready to Switch to SIP Trunking?

Get a personalized quote and start saving on your phone costs today.

Call Us

03333 207 200

Email Us

hello@zerotelecommunications.co.uk

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Free cost analysis

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