Summary:

Chris Holland: “Until SIP came along, it was only possible to easily get in real-time touch with somebody within closed, proprietary ecosystems: the traditional telephone system, ICQ, AOL Instant Messaging, Yahoo Instant Messaging, MSN Instant Messaging, Skype, CU Seeme, to name a very few.”

Chris Holland: “Until SIP came along, it was only possible to easily get in real-time touch with somebody within closed, proprietary ecosystems: the traditional telephone system, ICQ, AOL Instant Messaging, Yahoo Instant Messaging, MSN Instant Messaging, Skype, CU Seeme, to name a very few.”

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