Automatic Call-back
In telecommunications the automatic call-back is a computer telephone function which allows the user by the engaged addressee’s line or in the other case of the subscriber’s inaccessibility indicating the system to save the number of the called subscriber and make the call when the line will be available or when the called number is not engaged.
Grandsteam GXV-3140 video phone from Grandstream Networks represents a next generation of interpersonal IP multimedia communications. Extraordinary quality of video, advanced telephone functions and rich user interface are implemented in a smooth industrial design of this stand out device. This model of the phone has crystal clean color 4,3 inch display and 1.3 megapixel CMOS camera, built in dual port switch and wide range of additional interfaces, such as slots for SD cards, USB port, stereo headsets, audio and video output etc, advanced standards of video compression H.263/263+, H.264 and full duplex speaker phone.
TELES Communication Systems
TELES Communication Systems is a leading provider of equipment, solutions and services to fixed, fixed-mobile convergence and Next-Generation-Network (NGN) service providers. With more than 160 carrier network customers and millions of voice ports deploye
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