+ many more

SIP Trunks made easy

Streamline your business communication with flexible and cost-effective SIP trunks.

Customized Plans

Tailor Sipflex services to your needs and budget by building your own plan. Receive an instant quote using our pricing calculator.

PBX Compatibility

Our support extends to any PBX system that leverages SIP or IAX2. Access configuration guides many PBX solutions.

Highly Available

Leverage our built-in redundancy options, including SIP failover, call forwarding, and Voicemail to email for uninterrupted service.

Fraud Protection

Rest easy with our robust security and fraud management systems, shielding you from Toll Fraud.

Flexible Configuration

Select from a variety of SIP connectivity options, including SIP Registration, SIP Peering, or IAX2.

Asterisk Friendly

As advocates of open-source solutions, we are Asterisk-friendly and support IAX2 connectivity. Your communication platform, your way.

Add Phone Numbers

Provision phone numbers from any UK town or city, or choose from over 50 countries globally. Alternatively, port your existing numbers.

Add Cloud Features

Take your Sipflex trunks to the next level by adding Cloud PBX features like Call Recording, Voicemail, and more.

How Sipflex Works

Sipflex makes building a robust communications plan easy with our flexible SIP offerings

01 Start a free trial

Sign up for a free trial. Choose any local UK phone number to use for the trial and enjoy 60 minutes of free UK calling. No credit card is required for the trial.
02 Configure your PBX

Follow our configuration guides to configure your PBX of choice. Test our service to ensure that Sipflex will suit your needs.
03 Port your existing phone numbers

If applicable, port your existing phone numbers via our web portal. You can choose to keep the phone number used in your trial or discard it.
04 Add calling bundles

Once the porting process has completed, load credit onto your account and add a calling bundle that suits your requirements. Or continue using our pay as you go calling rates.

Start a Free Trial Instantly!

Don't be left wondering. Test our robust network with a free 30 day trial. No credit card required.

Start Free Trial

Pricing

SIP Trunks

^£1 per month, per trunk

^{*one trunk = one simultaneous call}

UK Phone Numbers

^£1 per month

^{Port your own number for £10}

Other Number Types

from ^£1 per month

^{Cost of number porting varies}

Cloud PBX Features

^£1 per month, per trunk

^{*includes call recording and many more}

PAYG Calling Rates

UK Landline ^1.5p

UK Mobile ^4p

International Rates^{from 1p}

or save even more with one of our calling bundles

Calling Bundles

300 minutes - UK Landline, UK Mobile & International ^£5

750 minutes - UK Landline, UK Mobile & International ^£10

2000 minutes - UK Landline, UK Mobile & International ^£20

6000 minutes - UK Landline, UK Mobile & International ^£50

*pricing excludes VAT
** See Pricing Terms

Start 30 Day Free Trial

Contact

Location:

Telehouse East, 14 Coriander Ave, London E14 2AA, United Kingdom

Email:

support@sipflex.co.uk

Call:

0800 810 1057

Sipflex Calling Rates

United Kingdom Calling

* Mobile call rates exclude calls to Lycamobile and Premium services which are charged at either 'UK Special Mobile' or 'UK Special Other' rates (see rates below)

International Calling

Pricing excludes VAT

Country	Call Type	Price
Afghanistan	Fixed	0.30
Afghanistan	Mobile	0.40
Albania	Fixed	0.20
Albania	Mobile	0.50
Algeria	Fixed	0.10
Algeria	Mobile	0.60
Andorra	Fixed	0.02
Andorra	Mobile	0.25
Angola	Fixed	0.07
Angola	Mobile	0.40
Anguilla	Fixed	0.30
Anguilla	Mobile	0.40
Antarctica	Fixed	1.25
Antigua & Barbuda	Fixed	0.25
Antigua & Barbuda	Mobile	0.40
Argentina	Fixed	0.03
Argentina	Mobile	0.10
Armenia	Fixed	0.40
Armenia	Mobile	0.30
Aruba	Fixed	0.15
Aruba	Mobile	0.30
Ascension Island	Fixed	1.10
Australia	Fixed	0.02
Australia	Mobile	0.05
Austria	Fixed	0.15
Austria	Mobile	0.40
Azerbaijan	Fixed	0.30
Azerbaijan	Mobile	0.40
Bahamas	Fixed	0.20
Bahamas	Mobile	0.25
Bahrain	Fixed	0.15
Bahrain	Mobile	0.20
Bangladesh	Fixed	0.04
Bangladesh	Mobile	0.04
Barbados	Fixed	0.25
Barbados	Mobile	0.30
Belarus	Fixed	0.40
Belarus	Mobile	0.40
Belgium	Fixed	0.15
Belgium	Mobile	0.50
Belize	Fixed	0.30
Belize	Mobile	0.40
Benin	Fixed	0.40
Benin	Mobile	0.40
Bermuda	Fixed	0.04
Bermuda	Mobile	0.05
Bhutan	Fixed	0.10
Bhutan	Mobile	0.10
Bolivia	Fixed	0.30
Bolivia	Mobile	0.25
Bosnia Herzegovina	Fixed	0.20
Bosnia Herzegovina	Mobile	0.40
Botswana	Fixed	0.15
Botswana	Mobile	0.30
Brazil	Fixed	0.03
Brazil	Mobile	0.04
British Virgin Islands	Fixed	0.20
British Virgin Islands	Mobile	0.40
Brunei	Fixed	0.04
Brunei	Mobile	0.04
Bulgaria	Fixed	0.02
Bulgaria	Mobile	0.40
Burkina Faso	Fixed	0.40
Burkina Faso	Mobile	0.50
Burundi	Fixed	0.60
Burundi	Mobile	0.60
Cambodia	Fixed	0.10
Cambodia	Mobile	0.10
Cameroon	Fixed	0.15
Cameroon	Mobile	0.40
Canada	Fixed	0.01
Cape Verde	Fixed	0.25
Cape Verde	Mobile	0.40
Cayman Islands	Fixed	0.10
Cayman Islands	Mobile	0.25
Central African Republic	Fixed	0.90
Chad	Fixed	0.20
Chad	Mobile	0.60
Chile	Fixed	0.03
Chile	Mobile	0.07
China	Fixed	0.03
China	Mobile	0.03
Colombia	Fixed	0.07
Colombia	Mobile	0.04
Comoros	Fixed	0.60
Comoros	Mobile	0.36
Congo	Fixed	0.40
Congo	Mobile	0.60
Cook Islands	Fixed	0.90
Costa Rica	Fixed	0.03
Costa Rica	Mobile	0.10
Croatia	Fixed	0.10
Croatia	Mobile	0.40
Cuba	Fixed	0.70
Cuba	Mobile	0.81
Cyprus	Fixed	0.10
Cyprus	Mobile	0.15
Czech Republic	Fixed	0.03
Czech Republic	Mobile	0.15
Denmark	Fixed	0.02
Denmark	Mobile	0.02
Diego Garcia	Fixed	1.00
Djibouti	Fixed	0.40
Djibouti	Mobile	0.40
Dominica	Fixed	0.30
Dominica	Mobile	0.40
Dominican Republic	Fixed	0.05
Dominican Republic	Mobile	0.20
East Timor	Fixed	0.40
East Timor	Mobile	0.40
Ecuador	Fixed	0.20
Ecuador	Mobile	0.30
Egypt	Fixed	0.15
Egypt	Mobile	0.20
El Salvador	Fixed	0.20
El Salvador	Mobile	0.25
Equatorial Guinea	Fixed	0.60
Equatorial Guinea	Mobile	0.36
Eritrea	Fixed	0.30
Eritrea	Mobile	0.27
Estonia	Fixed	0.02
Estonia	Mobile	0.40
Ethiopia	Fixed	0.30
Ethiopia	Mobile	0.30
Faeroe Island	Fixed	0.07
Faeroe Island	Mobile	0.25
Falkland Islands	Fixed	1.20
Fiji	Fixed	0.40
Fiji	Mobile	0.40
Finland	Fixed	0.50
Finland	Mobile	0.50
France	Fixed	0.02
France	Mobile	0.18
French Polynesia	Fixed	0.25
French Polynesia	Mobile	0.40
FYR of Macedonia	Fixed	0.25
FYR of Macedonia	Mobile	0.40
Gabon	Fixed	0.40
Gabon	Mobile	0.60
Gambia	Fixed	0.40
Gambia	Mobile	0.90
Georgia	Fixed	0.25
Georgia	Mobile	0.40
Germany	Fixed	0.02
Germany	Mobile	0.03
Ghana	Fixed	0.40
Ghana	Mobile	0.40
Gibraltar	Fixed	0.05
Gibraltar	Mobile	0.20
Global	Mobile	0.65
Greece	Fixed	0.03
Greece	Mobile	0.10
Greenland	Fixed	0.40
Greenland	Mobile	0.50
Grenada	Fixed	0.25
Grenada	Mobile	0.30
Guadeloupe (French)	Fixed	0.02
Guadeloupe (French)	Mobile	0.15
Guam	Fixed	0.02
Guatemala	Fixed	0.20
Guatemala	Mobile	0.20
Guiana (French)	Fixed	0.02
Guiana (French)	Mobile	0.15
Guinea Bissau	Fixed	0.50
Guinea Bissau	Mobile	0.60
Guinea Republic	Fixed	0.40
Guinea Republic	Mobile	0.50
Guyana	Fixed	0.30
GUYANA	Mobile	0.40
Haiti	Fixed	0.40
Haiti	Mobile	2.50
Honduras	Fixed	0.20
Honduras	Mobile	0.25
Hong Kong	Fixed	0.02
Hong Kong	Mobile	0.03
Hungary	Fixed	0.07
Hungary	Mobile	0.10
Iceland	Fixed	0.02
Iceland	Mobile	0.03
India	Fixed	0.02
India	Mobile	0.02
Indonesia	Fixed	0.07
Indonesia	Mobile	0.07
International 800	Fixed	0.05
Iran	Fixed	0.25
Iran	Mobile	0.25
Iraq	Fixed	0.20
Iraq	Mobile	0.30
Ireland (Republic)	Fixed	0.015
Ireland (Republic)	Mobile	0.04
Israel	Fixed	0.02
Israel	Mobile	0.05
Italy	Fixed	0.02
Italy	Mobile	0.15
Ivory Coast	Fixed	0.40
Ivory Coast	Mobile	0.40
Jamaica	Fixed	0.30
Jamaica	Mobile	0.40
Japan	Fixed	0.02
Japan	Mobile	0.07
Jordan	Fixed	0.20
Jordan	Mobile	0.25
Kazakhstan	Fixed	0.07
Kazakhstan	Mobile	0.30
Kenya	Fixed	0.30
Kenya	Mobile	0.40
Kiribati	Fixed	1.10
Korea (Nth)	Fixed	0.50
Korea (Sth)	Fixed	0.02
Korea (Sth)	Mobile	0.02
Kuwait	Fixed	0.05
Kuwait	Mobile	0.07
Kyrgyzstan	Fixed	0.20
Kyrgyzstan	Mobile	0.25
Laos	Fixed	0.10
Laos	Mobile	0.09
Latvia	Fixed	0.50
Latvia	Mobile	0.40
Lebanon	Fixed	0.15
Lebanon	Mobile	0.25
Lesotho	Fixed	0.90
Lesotho	Mobile	0.90
Liberia	Fixed	0.50
Liberia	Mobile	0.50
Libya	Fixed	1.20
Libya	Mobile	0.40
Liechtenstein	Fixed	0.10
Liechtenstein	Mobile	0.25
Lithuania	Fixed	0.20
Lithuania	Mobile	0.60
Luxembourg	Fixed	0.30
Luxembourg	Mobile	0.30
Macau	Fixed	0.10
Macau	Mobile	0.15
Madagascar	Fixed	0.50
Madagascar	Mobile	0.70
Malawi	Fixed	0.40
Malawi	Mobile	0.50
Malaysia	Fixed	0.03
Malaysia	Mobile	0.04
Maldives Republic	Fixed	0.80
Maldives Republic	Mobile	0.80
Mali	Fixed	0.40
Mali	Mobile	0.50
Malta	Fixed	0.18
Malta	Mobile	0.36
Mariana Island	Fixed	0.04
Marshall Islands	Fixed	0.30
Martinique	Fixed	0.02
Martinique	Mobile	0.10
Mauritania	Fixed	0.60
Mauritania	Mobile	0.48
Mauritius	Fixed	0.25
Mauritius	Mobile	0.25
Mexico	Fixed	0.01
Mexico	Mobile	0.07
Micronesia	Fixed	0.60
Moldova	Fixed	0.40
Moldova	Mobile	0.40
Monaco	Fixed	0.10
Monaco	Mobile	0.50
Mongolia	Fixed	0.03
Mongolia	Mobile	0.05
Montenegro	Fixed	0.25
Montenegro	Mobile	0.40
Montserrat	Fixed	0.30
Montserrat	Mobile	0.30
Morocco	Fixed	0.03
Morocco	Mobile	0.60
Mozambique	Fixed	0.07
Mozambique	Mobile	0.40
Myanmar	Fixed	0.20
Myanmar	Mobile	0.17
Namibia	Fixed	0.05
Namibia	Mobile	0.10
Nauru	Fixed	1.10
Nepal	Fixed	0.20
Nepal	Mobile	0.25
Netherlands	Fixed	0.30
Netherlands	Mobile	0.40
Netherlands Antilles	Fixed	0.07
Netherlands Antilles	Mobile	0.20
New Caledonia	Fixed	0.25
New Caledonia	Mobile	0.40
New Zealand	Fixed	0.02
New Zealand	Mobile	0.05
Nicaragua	Fixed	0.20
Nicaragua	Mobile	0.50
Niger	Fixed	0.40
Niger	Mobile	0.40
Nigeria	Fixed	0.15
Nigeria	Mobile	0.15
Niue Island	Fixed	1.20
Norfolk Island	Fixed	1.10
Norfolk Island	Mobile	1.25
Norway	Fixed	0.03
Norway	Mobile	0.07
Oman	Fixed	0.15
Oman	Mobile	0.40
Pakistan	Fixed	0.07
Pakistan	Mobile	0.07
Palau	Fixed	0.29
Palau	Mobile	0.56
Palestine	Fixed	0.20
Palestine	Mobile	0.25
Panama	Fixed	0.03
Panama	Mobile	0.20
Papua New Guinea	Fixed	0.40
Papua New Guinea	Mobile	1.10
Paraguay	Fixed	0.04
Paraguay	Mobile	0.10
Peru	Fixed	0.02
Peru	Mobile	0.10
Philippines	Fixed	0.15
Philippines	Mobile	0.20
Poland	Fixed	0.02
Poland	Mobile	0.20
Portugal	Fixed	0.03
Portugal	Mobile	0.15
Puerto Rico	Fixed	0.02
Puerto Rico	Mobile	0.02
Qatar	Fixed	0.20
Qatar	Mobile	0.25
Reunion	Fixed	0.04
Reunion	Mobile	0.15
Romania	Fixed	0.02
Romania	Mobile	0.03
Russia	Fixed	0.05
Russia	Mobile	0.30
Rwanda	Fixed	0.40
Rwanda	Mobile	0.40
Samoa (American)	Fixed	0.25
Samoa (American)	Mobile	0.25
Samoa (Western)	Fixed	0.80
Samoa (Western)	Mobile	0.80
San Marino	Fixed	0.02
San Marino	Mobile	0.25
Sao Tome & Principe	Fixed	1.00
Sao Tome & Principe	Mobile	1.26
Saudi Arabia	Fixed	0.10
Saudi Arabia	Mobile	0.20
Senegal	Fixed	0.20
Senegal	Mobile	0.50
Serbia	Fixed	0.40
Serbia	Mobile	0.40
Seychelles	Fixed	0.60
Seychelles	Mobile	0.80
Sierra Leone	Fixed	0.40
Sierra Leone	Mobile	0.60
Singapore	Fixed	0.02
Singapore	Mobile	0.02
Slovak Republic	Fixed	0.02
Slovak Republic	Mobile	0.10
Slovenia	Fixed	0.02
Slovenia	Mobile	0.60
Solomon Islands	Fixed	0.80
Solomon Islands	Mobile	0.80
Somalia	Fixed	0.60
Somalia	Mobile	0.41
South Africa	Fixed	0.40
South Africa	Mobile	0.25
Spain	Fixed	0.02
Spain	Mobile	0.20
Sri Lanka	Fixed	0.20
Sri Lanka	Mobile	0.20
St Helena	Fixed	1.20
St Kitts & Nevis	Fixed	0.25
St Kitts & Nevis	Mobile	0.40
St Lucia	Fixed	0.30
St Lucia	Mobile	0.40
St Pierre & Miquelon	Fixed	0.40
St Pierre & Miquelon	Mobile	0.60
St Vincent & Bequia	Fixed	0.25
St Vincent & Bequia	Mobile	0.40
Sudan	Fixed	0.20
Sudan	Mobile	0.25
Suriname	Fixed	0.40
Suriname	Mobile	0.60
Swaziland	Fixed	0.15
Swaziland	Mobile	0.40
Sweden	Fixed	0.02
Sweden	Mobile	0.36
Switzerland	Fixed	0.02
Switzerland	Mobile	0.40
Syria	Fixed	0.40
Syria	Mobile	0.50
Taiwan	Fixed	0.02
Taiwan	Mobile	0.15
Tajikistan	Fixed	0.20
Tajikistan	Mobile	0.25
Tanzania	Fixed	0.40
Tanzania	Mobile	0.40
Thailand	Fixed	0.04
Thailand	Mobile	0.04
Togo	Fixed	0.40
Togo	Mobile	0.40
Tokelau	Fixed	1.30
Tonga	Fixed	0.80
Tonga	Mobile	0.80
Trinidad & Tobago	Fixed	0.40
Trinidad & Tobago	Mobile	0.40
Tunisia	Fixed	0.80
Tunisia	Mobile	0.80
Turkey	Fixed	0.05
Turkey	Mobile	0.25
Turkmenistan	Fixed	0.15
Turkmenistan	Mobile	0.20
Turks & Caicos Is	Fixed	0.30
Turks & Caicos Is	Mobile	0.40
Tuvalu	Fixed	1.10
Uganda	Fixed	0.40
Uganda	Mobile	0.40
Ukraine	Fixed	0.20
Ukraine	Mobile	0.40
UK Special Mobile	Fixed	0.36
UK Special Other	Fixed	0.24
United Arab Emirates	Fixed	0.20
United Arab Emirates	Mobile	0.20
Uruguay	Fixed	0.07
Uruguay	Mobile	0.25
USA	Fixed	0.01
Uzbekistan	Fixed	0.15
Uzbekistan	Mobile	0.15
Vanuatu	Fixed	0.80
Vanuatu	Mobile	0.80
Venezuela	Fixed	0.03
Venezuela	Mobile	0.15
Vietnam	Fixed	0.10
Vietnam	Mobile	0.10
Virgin Islands (USA)	Fixed	0.03
Wallis and Futuna Islands	Fixed	0.40
Yemen	Fixed	0.15
Yemen	Mobile	0.20
Zaire	Fixed	0.33
Zaire	Mobile	0.30
Zambia	Fixed	0.40
Zambia	Mobile	0.60
Zimbabwe	Fixed	0.15
Zimbabwe	Mobile	0.50

UK & Ireland Fixed Calls	1.5p per minute
UK & Ireland Mobile Calls	4p per minute*
0800 Outbound Calls	No charge
0800 Inbound from Landlines	4p per minute
0800 Inbound from Mobiles	7p per minute
International	From 1p per minute

0800 Inbound Calls from Landlines	4p per minute
0800 Inbound Calls from Mobiles	7p per minute
0800 Outbound Calls	No charge

Enterprise-grade SIP trunks

We are a no-nonsense UK SIP trunk provider empowering you with flexible SIP offerings for your PBX or Application