SIP trunking, or Session Initiation Protocol trunking, is a technology that allows businesses to make and receive telephone calls over the internet using their IP-based private branch exchange (PBX) systems. It uses the SIP protocol to establish and manage communication sessions, allowing for the transmission of voice, video, and other multimedia content.
SIP trunking works by establishing a virtual connection between the business's PBX system and the service provider's network, allowing for the routing of voice calls over the internet. It uses the SIP protocol to initiate, maintain, and terminate communication sessions, enabling businesses to make and receive calls to and from traditional phone numbers, mobile phones, and other SIP-enabled devices. It replaces traditional phone lines and enables voice and data communication over a single connection.
SIP trunking offers businesses a cost-effective and flexible solution for their voice communication needs, allowing them to leverage their existing IP infrastructure and take advantage of the benefits of internet-based telephony.
Different SIP providers provide SIP relay services with different quality levels. When choosing SIP relay services, you should consider the following features:
Overall, choosing a SIP relay service that suits your business needs means ensuring that the service has scalability, reliability, high-quality calls, appropriate functionality, and reasonable costs.
Alibaba Cloud has recently luanched Voice Messaging Service (VMS), which is a cloud-based service that provides multiple voice communication capabilities. This service provides rich voice features, such as voice notification, voice verification code, voice number, and international SIP trunking.
VMS provides a scalable SIP trunking service that allows you to manage your voice communications using on-demand self-service lines and on-demand cloud-based features. You can improve business agility by adding global PSTN connectivity for an unlimited expansion of VMS concurrency.
It provides carrier-grade availability in more than 100 countries or regions, cooperating with dozens of carriers worldwide. So you would not need to communicate with each operator for the resources access.
Note：The SIP voice service is invitation-based. Please submit a ticket with your Alibaba Cloud account ID to the technical support team or contact your account manager for the service ativition.
Learn more about Voice Messaging Service (VMS)
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