ITP United States
- Internet Telephony Service Provider
- PC to Phone
- Phone To Phone
- Cisco Systems
- Billing system of own development
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.
Call IT ApS
The ADPHONE product and brand is owned by Call IT ApS. Call IT is a software development house. Our business strategy is to integrate all suitable software with VoIP telephony. It is our mission to combine the two technologies to provide outstanding marke
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