By means of an adapter (SIP User)

Individual and corporate clients are offered a SIP telephony service via a VoIP adapter. Depending on the adapter parameters, from 1 to 48 SIP numbers can be assigned to one adapter. At the same time, from one to 30 communication channels can be assigned to each SIP number, as a result of which such a solution is considered more convenient for optimal construction of the internal telephone network of corporate clients.

It is also widely used in the Call Center construction.