SIP Trunk UK

UK SIP Trunking

Safe, Effective, & Affordable SIP Voice Service

2-way voice with local UK caller ID

99.995% uptime, no channel limits, & unlimited concurrent calling

Reliable, high-quality SIP origination & termination at affordable rates

TLS & SRTP encryption, proactive fraud monitoring, & 24/7 live support

No setup fees or contracts, just flexible pricing & affordable voice rates

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Your Company's Safe, Secure, & Reliable UK SIP Trunk Provider

UK SIP trunking connects your business to safe, secure, and reliable VoIP SIP service in the United Kingdom and abroad, all managed from one intuitive interface. Improve call quality, secure your business calls, and cut your total telephony costs with high-quality UK SIP trunking at affordable rates. Enjoy unlimited concurrent calls, instant number provisioning & configuration, secure VoIP encryption, and 40+ business voice features at no extra cost when you choose AVOXI as your UK SIP trunk provider.

Unlock Exceptional Voice Quality While Reducing Your Telecom Costs

SIP trunking with AVOXI upgrades your voice service while reducing your total telecom costs. Unlike other UK SIP service providers, there are no setup fees, no minimum contracts, no add-on costs for basic voice features like voicemail transcription, and no cost to provision SIP trunks for the UK or anywhere else. Just choose your numbers and enjoy flexible, pay-as-you go pricing for your voice origination or termination needs.

Talk to us today to get our complete VoIP origination and termination rates in the UK and anywhere else you do business!

Cloud Infrastructure

Connect SIP Trunks to Virtually Any Phone System, Including 3CX & Microsoft Teams

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Expect the Best from Your UK SIP Service Provider

Overview

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Your Intuitive, Easy-to-Use SIP Trunking Platform

SIP trunk solutions provided by AVOXI are designed to be reliable, scalable, secure, and easy-to-use.

  • No setup fees, no contracts, and no cost to cancel any SIP service plans.
  • Instantly provision new numbers, configure call routing rules, and manage all business voice services through a single intuitive platform. 
  • Integrate SIP service into your existing PBX or migrate your users to AVOXI for advanced analytics and agent monitoring.
  • Utilize unlimited SIP trunk channels any concurrent call capacity needs, automatically included for most number types.
  • Have numbers you want to keep? Porting phone numbers is free! You can even get paid to port your phone lines to AVOXI!

Network

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Voice Network Infrastructure Built for Secure, High-Quality Calling

AVOXI's resilient cloud infrastructure provides reliably superior call quality for thousands of companies across the globe.

  • Secure SIP Servers. Our equipment is housed in tier 4 data centers with multi-factored, physical security and calls are protected by powerful voice encryption. 
  • Enterprise-Grade Call Quality. Unlimited concurrent calling, 99.995% uptime, diverse range of codecs supported, and 4.2 MOS scores, the global standard for call quality.
  • Proactive Fraud Monitoring & Alerts. AVOXI proactively monitors and manages carriers, routes and error codes to identify network congestion and avoid packet loss.
  • Redundant Network with Reliable Failover. Zero Down Time (ZDU) + database replication across all regions allows AVOXI to move traffic quickly to a subset of devices. Our strong network leaves no openings for single points of failover.

Inbound Origination

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Inbound SIP Trunking for Scalable Voice Origination

AVOXI makes SIP origination affordable, scalable and includes a robust set of inbound features all in one intuitive platform.

  • Inbound Calling Made Easy. Manage your call routing rules, call recordings, voicemail services, call tracking analytics and VoIP number plans from an intuitive online interface.
  • Unlimited IVR. Create unlimited multi-level IVR menus and virtual attendants with personalized greetings - all at no extra cost.
  • SIP Numbers for Any Need. Start taking calls within minutes when you get toll free, non-geographic, local, and virtual mobile numbers in the UK and abroad.
  • Route Calls Anywhere. Provision numbers in 170+ countries in minutes and route calls to any number of devices, groups, and locations in the UK or abroad based on customizable rule sets. 
  • Fast & Reliable SIP Origination. No setup fees, no contracts--just superior call quality and dedicated 24/7 support.

Outbound Termination

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Reliable UK SIP Termination with Local Caller ID

Tired of your calls not going through or being ignored? Take advantage of TrueLocal™ numbers from AVOXI for a massive boost to your answer rates. These 2-way voice numbers unlock local voice origination and termination in the UK. That means the best call quality possible and guaranteed UK local caller ID during outbound calls. SIP termination with AVOXI includes:

  • No setup fees or minimum requirements.
  • Unlimited concurrent calling in the UK and several more regions.
  • Local voice termination numbers with guaranteed local caller ID in the UK.
  • Affordable SIP termination rates in the UK and 10,000+ global destinations. 
  • An intuitive platform interface that includes dozens of business voice features at no extra cost.

Your Intuitive, Easy-to-Use SIP Trunking Platform

SIP trunk solutions provided by AVOXI are designed to be reliable, scalable, secure, and easy-to-use.

  • No setup fees, no contracts, and no cost to cancel any SIP service plans.
  • Instantly provision new numbers, configure call routing rules, and manage all business voice services through a single intuitive platform. 
  • Integrate SIP service into your existing PBX or migrate your users to AVOXI for advanced analytics and agent monitoring.
  • Utilize unlimited SIP trunk channels any concurrent call capacity needs, automatically included for most number types.
  • Have numbers you want to keep? Porting phone numbers is free! You can even get paid to port your phone lines to AVOXI!

Voice Network Infrastructure Built for Secure, High-Quality Calling

AVOXI's resilient cloud infrastructure provides reliably superior call quality for thousands of companies across the globe.

  • Secure SIP Servers. Our equipment is housed in tier 4 data centers with multi-factored, physical security and calls are protected by powerful voice encryption. 
  • Enterprise-Grade Call Quality. Unlimited concurrent calling, 99.995% uptime, diverse range of codecs supported, and 4.2 MOS scores, the global standard for call quality.
  • Proactive Fraud Monitoring & Alerts. AVOXI proactively monitors and manages carriers, routes and error codes to identify network congestion and avoid packet loss.
  • Redundant Network with Reliable Failover. Zero Down Time (ZDU) + database replication across all regions allows AVOXI to move traffic quickly to a subset of devices. Our strong network leaves no openings for single points of failover.

Inbound SIP Trunking for Scalable Voice Origination

AVOXI makes SIP origination affordable, scalable and includes a robust set of inbound features all in one intuitive platform.

  • Inbound Calling Made Easy. Manage your call routing rules, call recordings, voicemail services, call tracking analytics and VoIP number plans from an intuitive online interface.
  • Unlimited IVR. Create unlimited multi-level IVR menus and virtual attendants with personalized greetings - all at no extra cost.
  • SIP Numbers for Any Need. Start taking calls within minutes when you get toll free, non-geographic, local, and virtual mobile numbers in the UK and abroad.
  • Route Calls Anywhere. Provision numbers in 170+ countries in minutes and route calls to any number of devices, groups, and locations in the UK or abroad based on customizable rule sets. 
  • Fast & Reliable SIP Origination. No setup fees, no contracts--just superior call quality and dedicated 24/7 support.

Get Advanced Outbound Features with Your Business Phone Number

After getting a VoIP number from AVOXI, add user licenses to unlock advanced phone system features. Outbound functionality includes:

  • Affordable outgoing call rates around the world
  • Global outbound dialing from a lightweight, browser-based VoIP phone
  • Custom caller ID available in most countries 
  • Click-to-call extension to make outgoing calls straight from the web, spreadsheets, CRM platforms and more
  • Outbound call recording, call scoring with notes, custom dispositions, advanced analytics, CRM integrations and so much more

SIP Service Features

AVOXI's virtual phone number features include all the tools you need to quickly improve your communications.

Call Routing

Divert incoming calls to another number or device with intelligent call routing.

IVR / Auto Attendant

Route inbound callers to the correct recipient through automated prompts and use of the dialpad.

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Call Recording

Record calls to easily monitor call quality, customer interactions, and reference details about the conversation.

Voicemail Transcription

Voicemails for missed calls are sent directly to your email inbox and include a transcription of your messages.

Global SIP Trunking

Get amazing voice quality, secure call routing, and affordable SIP termination worldwide with SIP trunking from AVOXI.

MS Teams Direct Routing

Benefit from the most extensive and reliable voice service perfect fit into your Microsoft Teams environment.

Voice API

The voice API suite is tailored for embedding global voice and messaging into your own technologies.

Number Porting

Easily port your number to the AVOXI network for free, and even get paid to transfer your number.

SIP Service Features

AVOXI's virtual phone number features include all the tools you need to quickly improve your communications.

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Call Forwarding

Divert incoming calls to another number or device with AVOXI's call forwarding feature.

IVR / Auto Attendant

Route inbound callers to the correct recipient through automated prompts and use of the dialpad.

Call Recording

Record calls to easily monitor call quality, customer interactions, and reference details about the conversation.

Voicemail Transcription

Voicemails for missed calls are sent directly to your email inbox and include a transcription of your messages.

Global SIP Trunking

Get amazing voice quality, secure call routing, and affordable SIP termination worldwide with SIP trunking from AVOXI.

MS Teams Direct Routing

Benefit from the most extensive and reliable voice service perfect fit into your Microsoft Teams environment.

Voice API

The voice API suite tailored for embedding global voice and messaging into your own technologies.

Number Porting

Easily port your number to the AVOXI network for free, and even get paid to transfer your number.

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Our equipment is housed in tier 4 data centers with multi-factored, physical security

Zero Down Time (ZDU) + database replication across all regions allows AVOXI to move traffic quickly to subset of devices

Strong broadband network across data centers, including multiple internet service providers with automatic failover

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  • Our equipment is housed in tier 4 data centers with multi-factored, physical security
  • Zero Down Time (ZDU) + database replication across all regions allows AVOXI to move traffic quickly to subset of devices
  • Strong broadband network across data centers, including multiple internet service providers with automatic failover

SIP Origination and Termination Powered by a Redundant VoIP Network Built for Security

Communication downtime isn’t just frustrating for your teams and customers, it can threaten your bottom line. That’s why so many businesses trust AVOXI for redundant and high-quality call routing. With multiple PoPs across the Americas, EMEA and APAC regions, and additional planned PoPs for offering geo-redundancy, you have access to the most expansive and reliable voice solutions on the market.

Partner with AVOXI for Award-Winning UK SIP Trunk Solutions

With notable recognition for our 20 years of global voice and messaging experience to our emerging solutions that are gaining adoption, AVOXI’s all-in-one platform delivers everything you need to successfully run and manage your global cloud communications.

Contact Center Awards
Contact Center Awards

Partner with AVOXI for Award-Winning UK SIP Trunk Solutions

With notable recognition for our 20 years of global voice and messaging experience to our emerging solutions that are gaining adoption, AVOXI’s all-in-one platform delivers everything you need to successfully run and manage your global cloud communications.

Toll Free, Non-Geographic, & Local DID Numbers to Fit Any Need

Get the right type of virtual business phone number for your company anywhere you need it.

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Toll Free SIP Lines

Toll free phone lines allow callers to reach your business without being charged. Toll free lines are easily recognized and look professional. In some cases, they can not be dialed from outside the country.

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Local SIP DIDs

Local DID numbers give businesses a local presence. In-region callers are only charged local call rates no matter where you answer the call. DID numbers can be dialed from outside the country.

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Non-Geographic SIP Lines

Non-geographic numbers act the same as local numbers, but have a nationally recognized dial-code. These business phone numbers are especially popular in the UK, UAE, Australia, and many other areas in Europe and Asia.

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TrueLocal™ (Local SIP Termination)

TrueLocal numbers provide access to local in-country caller ID’s for remote businesses. Acting as a PSTN replacement, TrueLocal numbers help businesses improve their local presence and increase their answer rates.

What People Say

Don't just take our word for it. See why thousands of businesses rely on AVOXI as their global communications platform.

"Easy to use, great customer support, and reasonable pricing
that can be customized according to usage."
Patricia Neo
Hyatt Corp

"In comparison to other similar services existing on the market
AVOXI definitely makes a difference on every level.”
Capucine Golicheff
BNP Paribas

”The interface is easy to use and very user friendly,
our teams required very little training to get started right away.”
Marco Rinalducci
Argos Assistance

"AVOXI makes it easy to add/remove user licenses, easy to set up call routing, virtual attendants and is very scalable without the need for large capital investments."
Andy Dao
Crown Worldwide

"AVOXI support and sales agents always take time and patiently walk us through our questions and issues. Unlike some providers who often just brushed off "silly" questions and don't bother to address each question or query raised."
Wey Jing Ho
World Link Communications

"Easy to use, great customer support, and reasonable pricing that can be customized according to usage."
Patricia Neo
Hyatt Corp

"In comparison to other similar services existing on the market AVOXI definitely makes a difference on every level.”
Capucine Golicheff
BNP Paribas

”The interface is easy to use and very user friendly, our teams required very little training to get started right away.”
Marco Rinalducci
Argos Assistance

"AVOXI makes it easy to add/remove user licenses, easy to set up call routing, virtual attendants and is very scalable without the need for large capital investments."
Andy Dao
Crown Worldwide

"AVOXI support and sales agents always take time and patiently walk us through our questions and issues. Unlike some providers who often just brushed off "silly" questions and don't bother to address each question or query raised."
Wey Jing Ho
World Link Communications

Connect UK SIP Trunks to Your PBX or Contact Center Today for Top-Notch Business Voice You Can Rely On