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    • Business Home
    • Digital Workplace Solutions
    • Voice Connectivity

    Voice connectivity

    Simplify your business calling and prepare for the future, with our VoIP (Voice over Internet Protocol) lines and services.

    Contact us

    VoIP phone systems for medium businesses

    Efficient

    The simple, reliable and efficient alternative for your phone calling systems.

    Flexible

    Easy to migrate, manage and scale as you make the jump from legacy systems.

    Cost saving

    Clear and predictable pricing models with great call quality.

    Future proof

    Transform your physical lines to virtual lines with VoIP.

    SIP trunking

    Move to internet-based calling for greater control and cost savings. We’ll help you make a seamless transition before physical phone lines are switched off in 2027.

    View SIP trunking

    Inbound Voice

    Manage, monitor and optimise your incoming business calls with our simple, reliable platform. Ensures priority callers can get through to the right channel directly without delay.

    View Inbound Voice

    Insights and resources

    Learn more about how our voice connectivity services can help your business stay ahead.

    A reliable, secure phone service for NHS 111

    Our award-winning network is helping NHS 111 connect patients to local healthcare services.

    Read more

    Get ready for the PSTN switch-off in 2027

    The PSTN circuits will be completely replaced by VoIP by Jan 2027. We can help you make the switch to VoIP seamlessly.

    Read more

    Get in touch with us (for businesses with 10-249 employees)

    Opening hours: 8am - 6pm. Out of hours support* is available from 6pm - 8am.

    Call us

    Call us by selecting the best number that matches your business need

    Call me back

    Busy right now? We’ll call you

    Request a callback

    Online help centre

    FAQs, guidance and info

    Get online support

    Out of hours support is available between 6pm-8am from Monday to Friday. This includes weekends and Bank Holidays.  

    The out of hours services you can receive depends on whether you’re a Foundation customer or a Tiered customer. Our out of hours service matrix outlines what support you can receive during out of hours periods.

    Foundation

    Tiered

    DPA Process for End Users

    Bar CTN (Lost or Stolen)

    Request PUK Codes

    Device Support

    Voicemail Reset

    Make PAC Requests

    Raise a Coverage Issue

    VCO Log-In Support

    SIM Activations /SIM Swaps

    Request a Non Chargeable Recovery Call Back**

    Request a Chargeable Recovery Call Back**

    Lift International + Roaming

    Cancellation Procedure

    Request NUC Codes

    Change Diverts

    Lift Content Control

    Sure Signal Support

    Chargeable Requests

    Unbar CTN

    User Secretaries Allowed***



    **Following completion of diagnostics, if it’s determined the device is faulty, a form will be completed and submitted. The advisor will confirm the Annovo team will contact the customer during core hours.

    ***Applies to main contacts only who can complete requests on behalf of an end user.

    Voice connectivity for large businesses

    Simplify your business calling and prepare for the future, with our VoIP (Voice over Internet Protocol) lines and services.

    Contact us

    VoIP: the future of phone systems is here

    Efficient

    The simple, reliable and efficient alternative for your phone systems.

    Flexible

    Easy to migrate, manage and scale as you make the jump from legacy systems.

    Cost saving

    Clear and predictable pricing models with great call quality.

    Future proof

    Transform your physical lines to virtual lines with VoIP.

    SIP trunking

    Move to internet-based calling for greater control and cost savings. We’ll help you make a seamless transition before physical phone lines are switched off in 2027.

    View SIP trunking

    Inbound Voice

    Manage, monitor and optimise your incoming business calls with our simple, reliable platform. Ensures priority callers can get through to the right channel directly without delay.

    View Inbound Voice

    Insights and resources

    Learn more about how our voice connectivity services can help your business stay ahead.

    A reliable, secure phone service for NHS 111

    Our award-winning network is helping NHS 111 connect patients to local healthcare services.

    Read more

    Get ready for the PSTN switch-off in 2027

    The PSTN circuits will be completely replaced by VoIP by Jan 2027. We can help you make the switch to VoIP seamlessly.

    Read more

    Get in touch with us (for businesses with 250+ employees)

    Opening hours: 8am - 6pm. Out of hours support* is available from 6pm - 8am.

    Call us

    Existing customers call 191

    0808 099 8877

    Call me back

    Busy right now? We’ll call you

    Request a callback

    Online help centre

    FAQs, guidance and info

    Get online support

    Out of hours support is available between 6pm-8am from Monday to Friday. This includes weekends and Bank Holidays.  

    The out of hours services you can receive depends on whether you’re a Foundation customer or a Tiered customer. Our out of hours service matrix outlines what support you can receive during out of hours periods.

    Foundation

    Tiered

    DPA Process for End Users

    Bar CTN (Lost or Stolen)

    Request PUK Codes

    Device Support

    Voicemail Reset

    Make PAC Requests

    Raise a Coverage Issue

    VCO Log-In Support

    SIM Activations /SIM Swaps

    Request a Non Chargeable Recovery Call Back**

    Request a Chargeable Recovery Call Back**

    Lift International + Roaming

    Cancellation Procedure

    Request NUC Codes

    Change Diverts

    Lift Content Control

    Sure Signal Support

    Chargeable Requests

    Unbar CTN

    User Secretaries Allowed***



    **Following completion of diagnostics, if it’s determined the device is faulty, a form will be completed and submitted. The advisor will confirm the Annovo team will contact the customer during core hours.

    ***Applies to main contacts only who can complete requests on behalf of an end user.


    Small business (1-9 employees)

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      Registered in England and Wales. Company No 01471587. Registered Office: Vodafone House, The Connection, Newbury, Berkshire, RG14 2FN.

      © 2025 Vodafone Limited is authorised and regulated by the Financial Conduct Authority for consumer credit lending and insurance distribution activity (Financial Services Register No. 712210)