Lower your business telephone bills by upgrading to SIP

Reduce your telephony costs and deliver a higher standard of service to your business with SIP from Birmingham Telecom

Are you Interested in SIP? Talk to an Expert and get a FREE Quotation

FREE and fast migration to SIP when you upgrade with us

Save 60% on your bills compared against legacy services

A simple, cost effective and flexible way to beat the 2025 switch off

Get FREE UK calls forever when you switch to SIP phone lines

SIP Trunking

SIP Telephone Lines are virtual telephone lines, created over your internet connection. Through your internet connection, SIP Telephone Lines work with a traditional Telephone System to replace analogue or ISDN telephone lines. 

In most cases, SIP Telephone Lines are most cost effective way to upgrade from ISDN or PSTN technology where you can also benefit from having FREE UK 01, 02, 07 and 03 telephone calls included at no additional cost.

Our SIP telephone lines can be instantly scaled up or down in line with demand and without the need for additional physical line installation.

Simply call us on 0121 716 8888 to discuss upgrading to SIP.

Avoid the analogue network switch off

Upgrading your phone lines to SIP protects your business against BT's announcement to switch off the ISDN and PSTN network.

A Scalable Service that is FREE to migrate

It is FREE to migrate your phone lines to SIP. There are also no limits to the number of lines you can use. simultaneously.

Includes FREE UK 01,02, 03 and 07 calls

Our SIP phone lines include 5,000 UK local and national minutes plus 2,000 UK mobile minutes FREE per SIP channel, per month.

Compatible with all IP Phone Systems

SIP is fully compatible with all major telephone system providers which ensures the cost to upgrade with us always stays low.

Future Proof

SIP is the future and it is here to stay. When you upgrade your phone lines to SIP, you won't have to upgrade again for many years ahead.

Cost Effective

SIP is the most cost effective way to run your business phone lines. It carries the lowest rental cost and the least amount of fault reports.

Upgrade for FREE

SIP is now rapidly replacing traditional ISDN and PSTN services. 

Our SIP telephone lines connect your site directly into our network via an IP connection to carry and terminate your inbound and outbound voice calls across the public telephone network. They are a reliable, cost-effective voice service both cheaper and more flexible than traditional digital or analogue phone lines.

Millions of people already have first-hand experience of VoIP through services like Skype which was originally aimed to allow free or low cost calls to be made over the internet. Such services have grown in sophistication & reliability and are now widely used on a daily basis for both voice calls and data in the modern day workplace.

Through a single internet connection, our SIP telephone lines allow you to divide your broadband bandwidth between voice calls and data. This means that the development and falling prices of SIP telephone lines has made VoIP a necessity for modern businesses.

Avoid the ISDN Switch Off

2014
BT Announcement
BT announce that the ISDN and PSTN networks will be switched off entirely by 2025.
2014
2017
Awareness Increases
Awareness and reliability of IP telephony increases. Businesses start mass migration to either SIP or Cloud Hosted Phone Systems.
2017
2018
Millions Still need to switch
According to BT research, in 2018 there were still over 2 million UK businesses that still needed to switch to SIP or Cloud Telephony.
2018
2025
Networks Switched Off
By 2025 all PSTN and ISDN services will be switched off across the BT network forcing customers to migrate to IP telephony.
2025
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Why Upgrade to SIP?

With BT’s announcement that the traditional PSTN and ISDN network will be made totally obsolete by 2025, our SIP phone lines will future proof your business whilst saving you up to 60% on your current telephone bills.

Our SIP telephone lines can installed instantaneously, scaled up or down in line with demand and are deployed without the need for additional physical line installation. Being great for flexible working practices, this provides the ability to integrate a home worker with a SIP based phone system with ease.

Birmingham Telecom are able to supply you with business grade SIP telephone lines that have been tested extensively with all major telephone systems.  Also, in the event of a disaster or line fault, calls can be quickly re-routed to another location or phone number within minutes.

SIP Trunking

£10.00 / per month
greentick5,000 FREE UK Minutes
greentick2,000 FREE Mobile Minutes
greentickFREE Setup & Number Porting
greentickFREE Caller Line ID
greentickFREE Direct Dial Numbers
greentickCompatible With All IP PBX's
greentickNo On-Site Installation*
greentickInstant Fail Over
greentickSave Up To 60%

BT ISDN 2e

£22.00 / per month
No FREE UK Minutes​
No FREE Mobile Minutes​
£250 / Per Circuit Install​
4 Week Lead Time
Expensive to Operate​
Not very Flexible
Need to Log a Fault for a Divert

BT ISDN 30e

£172.00 / per month
No FREE UK Minutes​
No FREE Mobile Minutes​
Over £1,000 for Installation
Minimum of 8 x Lines
6 Week Lead Time
High Ongoing Costs
Not Much Flexibility

BT PSTN

£18.00 / per month
No FREE UK Minutes​
No FREE Mobile Minutes​
£99 / Per Line Install​
Expensive to Operate​
Very Unreliable​
Zero Flexibility​

Line Rental Services

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SIP Trunking

Upgrade to SIP and benefit from savings of 50% and free UK National & Mobile Calls.

mobile-voice-and-data

Business Line Rental

View our range of business line rental services that will save you money and improve service levels.

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Call Packages

Competitive call packages that enable your business to do more, for less than you currently pay.

isdn-switch-off

ISDN Switch Off

Save money and prepare for the upgrade to IP technology by 2025 with Birmingham Telecom.

Avoid the analogue network switch off

Upgrading your phone lines to SIP protects your business against BT's announcement to switch off the ISDN and PSTN network.

A Scalable Service that is FREE to migrate

It is FREE to migrate your phone lines to SIP. There are also no limits to the number of lines you can use. simultaneously.

Competitive Pricing

We always remain competitive, offering a guarantee to beat any like-for-like quotation.

Friendly Approach​

Our team will never push you into anything. We simply want to give you the right advice.

Complete our enquiry form for a FREE Line Rental Quotation

Trusted By 23,200 U.K. Businesses

5 Star Google Review Rating

First Class Service & Support

Need a Mobile Broadband Quote? Get in touch and receive a call back from one of our specialists within an hour …..

Trusted By 23,200 U.K. Businesses

5 Star Google Review Rating

First Class Service & Support

Need a Free Mobile Tariff Review? Get in touch and receive a call back from one of our specialists within an hour …..

Trusted By 23,200 U.K. Businesses

5 Star Google Review Rating

First Class Service & Support

Need a SIM Only Mobile Quote? Get in touch and receive a call back from one of our specialists within an hour …..

Trusted By 23,200 U.K. Businesses

5 Star Google Review Rating

First Class Service & Support

Need a Quote? Get in touch and receive a call back from one of our specialists within an hour …..

Trusted By 23,200 U.K. Businesses

Fast, UK based support

FREE UK Calls for all customers who upgrade

Interested in Upgrading? Get in touch and receive a call back from one of our specialists within an hour …..

Get your first 30 days completely FREE

Fast, UK based support

FREE UK Calls for all customers who upgrade

Interested in Upgrading to SIP? Get in touch and receive a call back from one of our specialists within an hour …..
Get in touch and receive a call back from one of our specialists within an hour …..
Get in touch and receive a call back from one of our specialists within an hour …..
Get in touch and receive a call back from one of our specialists within an hour …..