--- title: BT One Phone Selects Metaswitch for Virtual SBC description: Metaswitch’s virtual Perimeta SBC helps power new BT One Phone service --- [ Skip to Content ](https://www.metaswitch.com/about/press-releases/bt-one-phone-selects-metaswitch-for-virtual-sbc1#main-content) An Alianza Company Search: An Alianza Company Menu Close # BT One Phone Selects Metaswitch for Virtual SBC By Metaswitch on Aug 7, 2014 8:00:00 AM ### Metaswitch’s virtual Perimeta SBC helps power new BT One Phone service Metaswitch Networks announced today that it is supplying its virtual Perimeta Session Border Controller to support the new BT One Phone service. BT One Phone brings fixed, mobile and office phone systems together into one service that is hosted in the cloud and delivered via mobile devices. Metaswitch’s virtualized Perimeta SBC supports SIP interconnect between the BT One Phone core network and the network operated by BT’s wireless partner. In addition, Perimeta protects network services from nefarious attacks and manages packet throughput under all load conditions. Perimeta also makes SIP interoperability simple by normalizing otherwise incompatible protocols. Perimeta's highly efficient message manipulation framework (MMF) includes an extensive rules engine for treating SIP and SDP headers without degrading network performance. Bottom line: Perimeta is a truly carrier-class, software-based SBC, built from its inception to operate on general-purpose computing platforms. Metaswitch’s virtualized Perimeta SBC can scale to thousands of simultaneous sessions and can be deployed on any virtualized cloud server, allowing BT to deliver a secure and stable service for its customers. **About BT One Phone** BT One Phone brings your desk phones, mobile phones and phone system together into a single hosted service so all of your calls and voicemail go to just one mobile device. For more information on BT One Phone, please visit: [http://business.bt.com/bt-one-phone](http://business.bt.com/bt-one-phone/). ### Topics - [Perimeta SBC](https://www.metaswitch.com/about/press-releases/tag/perimeta-sbc) ### Related Post ![](https://www.metaswitch.com/hubfs/Stock%20images/5G-nfv-automation-1.jpg) [Metaswitch Collaboration with VMware Enables Automated Telco Core Infrastructure](https://www.metaswitch.com/about/press-releases/metaswitch-collaboration-with-vmware-enables-automated-telco-core-infrastructure) Posted By Metaswitch on February 25, 2019 Fully automated solution from Metaswitch sharply reduces operational costs for Telcos LOS ALTOS, Calif. – February 25, 2019 – Cloud native ... [Read More](https://www.metaswitch.com/about/press-releases/metaswitch-collaboration-with-vmware-enables-automated-telco-core-infrastructure) ![](https://www.metaswitch.com/hubfs/Stock%20images/Banner/woman-holding-smartphone-in-airport-smiling.jpg) [Gamma Selects Metaswitch for VoWiFi Services](https://www.metaswitch.com/about/press-releases/gamma-selects-metaswitch-for-vowifi-services) Posted By Metaswitch on February 21, 2019 Network transformation accelerates new mobile services and rapid customer growth throughout the UK LOS ALTOS, Calif. – February 21, 2019 – Cloud ... [Read More](https://www.metaswitch.com/about/press-releases/gamma-selects-metaswitch-for-vowifi-services) ©2026 Alianza. All rights reserved.