Services/Secure Networks/SIP-enabled Voice

SIP-enabled Voice

Voice that works the way you do

ISDNandPSTNhadagoodrun,butold-schoolphonelinesareontheirwayout,andSIP-enabledvoiceisreadytotakeover.

Session Initiation Protocol (SIP) enabled voice transforms how you connect. It enables unified communications across platforms and devices, while cutting operational costs and boosting flexibility. From voice to video, it adapts to your workflows and meets the demands of a modern, distributed workforce.

We provide a fully managed, end-to-end voice service, supported by resilient multi-carrier networks and real-time optimisation. With Nasstar, you’re not just staying connected, you’re staying ahead.

Whatourexpertsays...

We have a lot of experience helping customers navigate complex needs. Especially in the fast-moving world of communications. Our SIP-enabled voice solution has been developed to keep you moving forward, ensuring a future-proof voice solution that keeps pace with advancements yet to come.

Rada SookramanienVoice Product Manager, Nasstar

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Case studies

We’ve partnered with a range of businesses on their SIP voice service transformations. 

Retail

The Works

Public sector

Accent Housing

What others have to say...

"With the ambition to have 600 stores by next year, we needed to know we had a reactive partner that could provide a seamless and scalable IT solution to match. A trustworthy partner who has the experience and expertise to fulfil our requirements and support our expansion plans. Nasstar is exactly the right fit for our business. Their support enables us to move forward as a business and remain ahead of the game in the competitive retail sector."

Tom Scott

IT Director

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The Works

Why choose Nasstar?

We don’t just deliver SIP voice solutions, we design them around your business, build them to scale, and back them with trusted carrier relationships for better performance and pricing.

FAQs

Session Initiation Protocol (SIP)-enabled voice is an IP-voice service that is highly flexible and designed to future-proof your business’ voice solutions. It helps to maintain call quality and business continuity with a much lower price point than traditional ISDN lines. 