标签RFC standards voip

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  SIP Phone DLL 2.1.1

  Research Lab Inc - Shareware -

  SIP Phone DLL by Research Lab Inc Review SIP Phone DLL by Research Lab Inc is a powerful software application that allows users to integrate VoIP (Voice over Internet Protocol) calling functionality into their own applications. 更多资料...
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  VOIP H323 Phone SDK 1.6

  Research Lab Inc - Shareware -

  VOIP H323 Phone SDK Review Research Lab Inc. offers a powerful VOIP H323 Phone SDK that provides developers with the tools they need to integrate voice over IP capabilities into their applications. 更多资料...