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.
We are offering for UAE, Oman & all Gulf Tunnel Client, Anti Block Dialer, Resellers.
we would like to extend a special offer to you through our following core routes PAKISTAN/INDIA/EGYPT/NEPAL/SRI LANKA with special pricing.
Including A/Z