A SIP trunk is the digital version of an analog phone line. Learn how you can upgrade to a unified digital phone system for your business.

The maker of corporate telephone equipment recently began selling gear using Session Initiation Protocol (SIP), a standard supporting many popular Internet telephone, videophone and instant messaging ...

Session initiation protocol (SIP) is a standard protocol used to initiate an interactive user session. SIP determines the end system to be used for the session, the communication media and media ...

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 ...

Discover the differences between SIP vs VoIP and why those differences don’t really matter that much during the buying process. SIP vs VoIP is a common question, but it’s not going to help you during ...

Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, modifying and terminating real-time communications sessions between Internet Protocol (IP) devices. SIP ...

Their redundancy also works quite well with critical servers such as your corporate web server. I inquired about how exactly it worked since typically SMBs have a single web server with a single DNS ...

I'm back from Internet Telephony Expo and thought I'd recap the show and offer my observations. First, the show was very well attended, especially the first day. A picture, or in this case, a video, ...

In this chapter, we start putting into practice some of the SIP concepts learned so far. We will show some very simple programming examples that illustrate how SIP works. As was stated in previous ...

8.6 Programs and Practice 8.6.1 Structure of the Applications For the practices in this chapter – except for Example 1, which is not a full application – we will use a simple architecture. The SIP ...