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.
By using Portech SBK-32 expander for 32 SIM-cards, you can increase the number of channels in the Portech MV-37X GSM VoIP gateway series using the Internet.
Alliance IP Network
We are an international enterprise who provide telecommunications service, which is located in the United States, where we provide all the services to the South and Central America.
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