4tel VoIP United Kingdom

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General office

4tel VoIP
86 The Avenue
Gainsborough
Lincs. ,DN21 1EH
United Kingdom

Phone: +44 1427 858005
Site: http://www.4tel.biz

Hardware
International VoIP Wholesale Provider

Call Relay VoIP Solutions
Call Routing VoIP Solutions
Collaboration
Installation and Support Services
Partnering for Origination and Termination
SIP Softswitch & CPE

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Intercom Paging

Some telephones, depending on the brand and model, have the intercom function, which allows to begin communication by sending the signal. When the signal comes, the telephone set rings a signal different from the standard ring tone call. After that the telephone temporarily switches off from the telephone line and works as an intercom.

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