Cisco 7942G is an IP phone with complete functionality, it has a speakerphone and a handset, which was specially developed for broadband sound.
VoiceFlex
SIP is the latest technology allowing voice call to be made over the internet. VoiceFlex uses SIP to provide low cost, ISDN replacement lines that provides the best possible call quality, inexpensively, sometimes at no cost, with the flexibility that come
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