E1/T1
A European format for digital transmission. E1 supports signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling), versus the T1, which carries signals at 1.544 Mbps (24 channels at 64Kbps).
With the release of Plantronics CS520 its producer once again raised the bar requirements for headsets for desk phones, ensuring users in a new degree of freedom of movement. This model features advanced audio technology and stylish design along with high reliability. For long conversations Plantronics CS520 is the best solution in an active call-center or in the office. The presence of two speakers in this model ensures that no external noises will interrupt an important conversation.
Tristar Communications
Tristar is a provider of Long Distance, Local Telephone Service, and Broadband access between specific locations and the internet. Tristar is unique because we can deliver broadband with multiple technologies. Tristar can provide DSL, Frame-Relay, Point-T
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