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.
TeleWebNetworks Inc.
TeleWeb Networks is a provider of telecommunications services. We engineer and operate voice circuits in countries across the globe and is also a provider of telecommunications equipment. Our customers are retail and wholesale telecom carriers in North Am
Read moreTop countries:
United States 1294
India 440 United Kingdom 425
Canada 348
Bangladesh 338
China 142
Pakistan 134
Australia 133
Spain 123
Russia 114View all countries