Twilio Elastic SIP Trunking is a cloud-based solution that provides connectivity for IP-based communications infrastructure to connect to the PSTN, for making and receiving telephone calls to the 'rest of the world' via any broadband internet connection. That infrastructure might be a cloud-based communications platform (such as an over the top application, a cloud contact center, or a Cloud PBX service) or it might be premises-based equipment (such as an IP-PBX or a contact center deployment).
Elastic SIP Trunking can be provisioned and deployed instantly. It is available with origination numbers in over fifty countries, with unlimited concurrent call capacity and low per-minute fees. Get more and pay less, all under a pay-as-you-go model.
Unlike other SIP Trunking providers, Twilio is built on a connectivity layer of hundreds of carriers around the world, so a Twilio Elastic SIP Trunk can cost-effectively terminate and originate calls between many different countries. No matter how many countries you need to communicate with, you only deal with Twilio — we handle all the carriers for you.