Session Initiation Protocol (SIP) Trunk Market: Key Vendors: 3CX Ltd, XO Communication, Shoretel Inc., Level 3 Communications, NTT Communications, Digium Inc, KPN International and Others
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.
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