Why choose Cinos as your SIP service provider?

Cinos is a Tier 1 SIP provider delivering a fully managed, end-to-end IP telephony platform with no reliance on third parties, so you benefit from lower call costs, reduced line-rental fees and predictable CAPEX. Our single-provider model ensures clear accountability and automatic rerouting in the event of connectivity issues, keeping your communications live even if a cable is accidentally damaged.

Key advantages include:

  • Cost efficiency: Cheaper calls, lower line rentals and reduced maintenance overheads compared with PSTN. Our bundled minute offer includes unlimited SIP calling minutes to UK National (numbers starting 01/02/03) and UK Mobile (UK mobiles starting 07).

  • Unrivalled resiliency: IP-based rerouting automatically maintains service during faults or outages.

  • Clear ownership: A single partner for everything from handset to PSTN, eliminating delays in issue resolution.

  • Proven expertise: Seasoned project teams specialising in migrations for police forces, acute NHS trusts, hospitals and government departments.

  • Seamless migration: Meticulous planning and execution to minimise risk and downtime ahead of BT’s January 2027 PSTN switch-off.

Whether you’re a critical-calling environment or any other organisation seeking reliable, high-quality telephony, Cinos combines technology, experience and accountability to keep your teams connected.