Twilio, the cloud-based communications company that lets app and website developers embed calling and messaging features into their work with a bit of API code, is today taking one more step to ...

Alexandra Twin has 15+ years of experience as an editor and writer, covering financial news for public and private companies. Robert Kelly is managing director of XTS Energy LLC, and has more than ...

Session Initiation Protocol (SIP) is a signaling protocol that is used to set up, modify, and terminate a session between two endpoints. SIP can be used to set up a two-party call, a multi-party call, ...

In Part 1 of our SIP primer, I covered the SIP foundation layers starting from the message structure and ending with the SIP transactions. We saw how phone registrations and proxies could work using ...

Before kissing TDM voice goodbye, make sure sellers keep their pricing and performance promises, and that you don't put your network or its economics at risk. Here's how. SIP trunking (VoIP based on ...

The new API features will help enterprises build autonomous, multimodal voice agents with remote tool access, PBX integration, and enhanced context awareness. OpenAI has added remote model context ...

Most people communicating on the internet are using SIP calling. Here’s how to make free SIP calls — and when you shouldn’t. Session Initiation Protocol (SIP) allows one device to find another and ...

Update: We're in the last throes of winter break 2019, which means most Ars' home office phones can stay dormant for a few more days. As such, we've been resurfacing a few classics from the ...

See which SIP trunk providers fit your 2026 voice setup, from fast deployment and transparent pricing to global coverage and PBX support. I’ve looked into just about every business phone system on the ...