Session Initiation Protocol (SIP) trunk helps in replacing the requirement of traditional analog, T1-based Public Switched Telephone Network (PSTN) connections with termination and allow company to get public or private internet connection through a SIP provider. These session initiation protocol providers are also known as Internet Telephony Service Providers as they offers PSTN service on a minute or channelized pricing model.
These session initiation protocol is widely used for ... Read more
