3. 术语 (Terminology)
3 术语 (Terminology)
在本文档中, 关键词 "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY" 和 "OPTIONAL" 应按 BCP 14, RFC 2119 [2] 中的说明解释, 并表示合规 SIP 实现的要求级别.
3 术语 (Terminology)
在本文档中, 关键词 "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY" 和 "OPTIONAL" 应按 BCP 14, RFC 2119 [2] 中的说明解释, 并表示合规 SIP 实现的要求级别.