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SIP Trunks

Cost Effective and Efficient SIP Trunking

Enhance your phone system with our reliable and secure SIP trunks
Reduce the monthly cost of inbound and outbound calls
True PBX flexibility from your existing phone system
Channels managed by our 5-star rated UK based team
For an instant quote, contact our UK based team on 0800 043 4388
Save £1000's with SIP Trunks from £0.99/month
Transfer existing SIP trunks to our network or setup new trunks today!

Complete your details below and a member of our team will respond to you shortly (Mon-Fri)

How many staff / users are on your existing telephone system?
How many channels (The number of calls made/received concurrently)?
Do you require your existing phone numbers to be ported to SIP?

What are SIP Trunks?

SIP Trunks are a form of media transfer that connects your premises directly to the Public Telephone Network. SIP (Session Initiation Protocol) is used to deliver voice, video and communications data over a SIP-based private branch exchange, commonly known as IP-PBX and is the backbone of unified communication solutions. Trunks are compatible with all the leading PBX hardware and this simple transfer to SIP offers cost-saving benefits with future-proofing and flexibility as added benefits.

Why switch to SIP Trunks?

SIP Trunks are the fastest growing telephony line for businesses looking to save money and add a layer of resilience to their existing telephone system. With SIP there is no need to upgrade systems as the ISDN channels are simply switched to SIP for internet-based calls, video and unified communications. SIP trunks are the perfect transition to IP-based calls using an existing system, without jumping to full VoIP (Voice over Internet Protocol).

How to add SIP lines to my phone system?

SIP trunks are added to the configuration of an existing phone system with IP access enabled. The typical digital system running over ISDN2 or ISDN30 is switched to SIP using the ID for example sip:0-800-043-0800@tw.example.com. This will pass traffic over the internet and any traditional copper ISDN channel can be removed to save money on rentals and call charges.

SIP Trunks
"Convert your legacy PBX system into a hybrid platform using IP-based SIP trunking. We offer packages for the UK and international calls to save you money and future-proof an existing system. Contact our SIP team on 0800 043 4388"
Speak with our UK based team to learn how SIP Trunks can help your business
SIP Trunk FLEXI
£3.49 Per
Month
£25.00 Connection
SIP Trunk Only Package Includes
Unlimited Inbound Calls
Included Number Presentation
Only 1.5 ppm UK Landline Minutes
Only 3 ppm UK Mobile Minutes
Only 2 ppm Call setup
Number Memorability
No Inclusive Minutes
Request a Callback
SIP Trunk PLUS
99p * Per
Month
£25.00 Connection
SIP Trunk + Bundle Package Includes
Unlimited Inbound Calls
Included Number Presentation
1000 Inclusive Minutes UK Landline Minutes
1000 Inclusive Minutes UK Mobile Minutes
Only 2 ppm (Out of bundle) Call setup
Number Memorability
Inclusive Landline & Mobile Minutes
Request a Callback
*SIP TRUNK PLUS £0.99p for 3 months and £5.99 per month thereafter. 12-month term.
SIP Trunk MAX
£9.99 Per
Month
£25.00 Connection
SIP Trunk + Bundle Package Includes
Unlimited Inbound Calls
Included Number Presentation
3000 Inclusive Minutes UK Landline Minutes
3000 Inclusive Minutes UK Mobile Minutes
Only 2 ppm (Out of bundle) Call setup
Number Memorability
Inclusive Landline & Mobile Minutes
Request a Callback

* PLUS package for a minimum of 3 channels and MAX packages for a minimum of 5 channels.

Some of the PBX vendors we work with

Mitel is a PBX vendor we work with. Business SIP Trunking.
Cisco is a PBX vendor we work with. Business SIP Trunking.
Avaya is a PBX vendor we work with. Business SIP Trunking.
Avaya is a PBX vendor we work with. Business SIP Trunking.
Samsung is a PBX vendor we work with. Business SIP Trunking.
Samsung is a PBX vendor we work with. Business SIP Trunking.
Snom Technology PBX telephone systems

Why Consider SIP for your Business?

We have helped our customers to save an average £4,770 per annum by upgrading their PBX with SIP Trunks and increasing control over their Telecoms.
By 2025, all UK business telephony will be hosted. SIP Trunks are the perfect solution to extend the lifespan of your existing PBX system and move to VoIP.
Our specialist team are on hand at the point of installation and assist with the ongoing configuration. Our aim is to make SIP easy and hassle free.
Telecoms World

The benefits of switching to SIP Trunks

SIP Trunks provide all the benefits of cutting-edge VoIP technology
Integrates With Your PBX

SIP Trunks provide all the benefits of cutting-edge VoIP technology without the need to replace the system you’ve already invested in.

With SIP Trunks it is incredibly easy to move or divert fixed lines anywhere with your PBX
Network Coverage

With SIP Trunks, it is straightforward to move or divert fixed lines anywhere, regardless of location, without any expensive call forwarding costs.

Save on average £4,770 per year with SIP Trunking
Save 70% On Line Rental

Save on average £4,770 per year and have increased control over your Telecoms. Plus, our system is easy to use, flexible and upgradeable at any time.

Expand your business with SIP without boundaries
Ultimately Scaleable

Expand your business without boundaries. Add and remove users in a few clicks saving time and money - all in the comfort of your existing PBX system.

SIP Trunking offers instant savings and is helping to fuel a full move to VoIP
The Best Deals In The UK

Call charges over SIP are often 30% cheaper when compared with traditional ISDN lines. The instant saving is helping to fuel a full move to VoIP.

Remove the cost of calls on your PBX between departments with FREE on-net calls using a SIP Trunks
Free Calls Between Offices

Remove the cost of calls between departments with FREE on-net calls using a SIP connection. Your staff internal calls can often take 20% to 30% off your bill.

Proud to work with leading UK businesses

Telecoms World, proud to work with leading UK businesses - DS Smith
Telecoms World, proud to work with leading UK businesses - Hilton
Telecoms World, proud to work with leading UK businesses - Costain
Telecoms World, proud to work with leading UK businesses - Direct Insurance Group PLC
Telecoms World, proud to work with leading UK businesses - Dementia UK
Telecoms World, proud to work with leading UK businesses - Hays Travel
Telecoms World, proud to work with leading UK businesses - NHS
Telecoms World, proud to work with leading UK businesses - Ladbrokes
Telecoms World, proud to work with leading UK businesses - Castore
Telecoms World, proud to work with leading UK businesses - Kings Ferry
Telecoms World, proud to work with leading UK businesses - Your Body Means Business
Telecoms World, proud to work with leading UK businesses - Lego
Telecoms World, proud to work with leading UK businesses - Megden
Telecoms World, proud to work with leading UK businesses - PING
13,986
Accounts
Happy Customers
670,424
Live Services
To UK Business
5
Star Rating
On Trustpilot
20+
Years Trading
2002 - 2022

Telecoms World

Unit 2/3 Kingfisher House
New Mill Road
Orpington
Kent BR5 3QG

Connect with us

Recent accolades

We are award winners - Comms National Awards

Government Business

We are a Crown Commercial Service Supplier

Trustpilot Reviews

We have over 1000 5 star reviews on Trustpilot

Transfer existing SIP trunks to our network or setup new trunks today!

Complete your details below and a member of our team will respond to you shortly (Mon-Fri)