Group Paging
A group of users can be created with a purpose of receiving voice announcements through the speaker of a telephone set, but it has to be in the waiting mode.
Cisco SFE2000P is one of the best switch models, designed for use with modern VoIP-equipment. The switch is characterized by elevated levels of reliability.
VASC Software and Media Company
VASC Software and Media Company (VASC) is a wholly owned subsidiary of Vietnam Post and Telecommunications (VNPT) which currently owns and controls the national network on behalf of the government, most of the access network, the largest international gat
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