Advanced Info Service (AIS), Thailand’s largest mobile operator by subscribers, has enlisted California-based cloud native communications software vendor Metaswitch to extend its deployment of Metaswitch Perimeta session border controllers from the cellco’s 3G network to its 4G network, in order to enable the development and delivery of voice-over-LTE (VoLTE) services. The deployment will support VoLTE peering between AIS and other network operators. In addition to Perimeta, AIS has deployed the Metaview Service Assurance Server (SAS), which is designed to facilitate troubleshooting and remediation should problems arise and help ensure that service level agreements (SLAs) are being met, even in virtualised environments. Kriengsak Wanichnatee, chief technology officer for AIS, commented: ‘VoLTE peering offered by our own network and others will enable rapid proliferation of VoLTE services in the SEA region.’