一个 Delphi 版本的 SIP 协议栈，实现了 SIP相关的很多 RFC 规范-a version of the SIP protocol stack, achieved many of the SIP RFC norms

Descr iption: TALsmtpClient class implements the SMTP protocol (RFC-821)

Delphi 访问SAP 的 RFC 接口例子-Delphi interface to access the example of SAP' s RFC

PGP is the name of a program originally written by Phil Zimmermann in 1991. Later versions have been developed and distributed by MIT, ViaCrypt, PGP Inc., and now Network Associates Inc. (NAI). But PGP is also a standard (RFC 2440: Open PGP Message F