IP, or Session Initiation Protocol is a foundation protocol formalized by the International Telecommunications Union (ITU) in 1999 by RFC 2543 for initiating, maintaining, and terminating Voice over Internet Protocol (VoIP) telephone calls and exists on the Application Layer (or Layer 7) of the OSI Model (for additional reading, Wikipedia has a great article on the OSI model here). SIP can also be used for other applications, such as video calling and text messaging.
- SIP, VOIP
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Firm Order Confirmation (FOC)
This is the date provided by the losing carrier during a number port that the phone provider will...
Losing Service Provider or Losing Carrier (LSP)
This is the carrier or service provider which is losing a telephone number(s) during a port request.
Customer Service Record (CSR)
Your CSR is the record of information associated with your account including your number(s),...
Port
A port is the process in which a Telephone Number is transferred from the Losing Carrier to...
Telephone Number (TN)
A Telephone Number (TN) is historically associated with a copper path or circuit, today we tend...
