From VoIP to Unified Communications and WebRTC
Besides signaling when projecting and deploying Unified Communications system, we might also be interested in encrypting the media transferred between devices. There are three popular RTP encryption modes: SRTP MIKEY / SDES (requires TLS encryption of signaling) SRTP DTLS ZRTP SRTP The Secure Real-Time Transport Protocol (or SRTP) defines a profile of RTP (Real-Time Transport …
As we have seen in the previous blog article , there are major problems in carrying faxes over IP. Let’s see why Faxing over IP is a reliable standard for transmission of faxes. A standard which makes the communication much more reliable, whenever conditions are not optional, is T.38. The T.38 fax relay standard was …
The SIP specification has been extended over time to support a general mechanism allowing for subscription to asynchronous events. Such events can include SIP proxy statistics changes, presence information, session changes and so on. A user agent interested in event notification sends a SUBSCRIBE message to an SIP server. The SUBSCRIBE message establishes a dialog …
In this blog article we will discuss the basic standards used for real-time communications — SIP and XMPP — what is the difference, how each of them works, and, which one to choose. SIP and XMPP The IETF has two documented standards for real-time communications that are widely implemented: SIP and XMPP. These standards transport …
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Understanding VoIP and UC and how they transform Business Communications. What is Unified Communications? Unified Communications vs Dis-unified Communications Four mistakes in choosing a Unified Communications system Unified Communications & Collaboration benefits If you are a business owner and you are looking to modernize your company’s phone system, you would definitely come across these two …