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- BT announce that ISDN circuits will be ceased
- VoIP: We provide robust and highly flexible VoIP services with hosted switchboards

Business ISDN2e & ISDN30e

Integrated Services Digital Network (ISDN) is a fully digital public network service, which can be used for voice, data, fax, video conferencing etc. It is ideal for rich media graphics and applications. With both ISDN2e and ISDN30e, we can offer you:

  • Highly competitive line rental and call rates
  • Easy to switch
  • Seamless transfers from other service providers
  • Keep your existing number
  • A dedicated 'Account Manager'
  • Excellent service & support
  • New line(s) installed wherever you need them
  • Provide individual DDI numbers for all your staff
  • Comprehensive phone calling features (aka Calling Select Services)
  • Significant savings as compared to BT



For offices with  2 - 8 concurrent users, ISDN2e allows for up to 8 simultaneous calls into or out of your business.



For larger offices, ISDN30e is for businesses whom expect to make or receive over 8 simultaneous calls.


Limited time offer

FREE INSTALLATION of your ISDN2 or ISDN30 circuits (Subject to T&Cs)


Please call us FREE on 08008 491 492 for further details or via our online form. Alternatively, please use the following link if you require Standard Analogue Business Lines.

Contact Us

T: 08000 385 990
F: 0118   911 1056
Contact Us Here


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UK Surplus "During a chaotic office move, 1AffordableCall supported us in every way and ensured that we had fully working lines from the day we moved in." ...


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Lynda Morten - Maidenhead Chamber of Commerce 1AffordableCall "arranged to transfer the Maidenhead Chamber of Commerce BT business phone line to one of their recommended providers, it has saved us approx 50% of the BT phone charges and the transfer went without a hitch". We were ver...


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