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What does SIP stand for?

SIP stands for Softphone IP Phone


This definition appears somewhat frequently

See other definitions of SIP

Other Resources: Acronym Finder has 183 verified definitions for SIP

Samples in periodicals archive:

Cisco IP SoftPhone Cisco IP SoftPhone.
Make calls with Softphone software, a phone application that connects your voice over Internet Protocol (VOIP). Supports voice chat, video call, call recording and more.
The i2050 (IP Softphone 2050) software telephone from Nortel Networks is compatible with BCM and Succession platforms
Internet phone service including PC to phone calling. Signup for a free account, download free Softphone, or Bring Your Own Device.
Clients, patients, colleagues, associates, subjects, and veterans alike—whether they're in the next state, across the country, or in another part of the world—rate highly the efficiency and ease with which V2VIP™ service, videophone, video softphones and VoIP phones.
Desktop and mobile SIP-based VoIP softphones and solutions for enterprises and operators. Home of the industry favorite Bria and X-Lite clients.
USB phone sets for use with softphones USB phone sets are often called USB phones by their manufacturers and vendors, but they are really only remote control and audio units for use with soft phones running on a personal computer. The soft phone is communicating with the remote VoIP server and doing the voice encoding and decoding, while the USB phone set provides a user interface to and headphones/microphone set for the soft phone running on the personal computer.