Yealink SIP-T2XP Administrator's Manual page 440

Administrator's Guide for SIP-T2xP and SIP-T19P IP Phones
RFC 3550—RTP , RTCP , IETF RFC 3550
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RFC 3556—Session Description Protocol (SDP) Bandwidth Modifiers for RTCP
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Bandwidth
RFC 3581—An Extension to the SIP for Symmetric Response Routing
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RFC 3608—SIP Extension Header Field for Service Route Discovery During
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Registration
RFC 3665—Session Initiation Protocol (SIP) Basic Call Flow Examples
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RFC 3666—SIP Public Switched Telephone Network (PSTN) Call Flows.
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RFC 3680—SIP Event Package for Registrations
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RFC 3702—Authentication, Authorization, and Accounting Requirements for the SIP
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RFC 3711—The Secure Real-time Transport Protocol (SRTP)
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RFC 3725—Best Current Practices for Third Party Call Control (3pcc) in the Session
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Initiation Protocol (SIP)
RFC 3842—A Message Summary and Message Waiting Indication Event Package
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for the Session Initiation Protocol (SIP)
RFC 3856—A Presence Event Package for Session Initiation Protocol (SIP)
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RFC 3890—A Transport Independent Bandwidth Modifier for the SDP
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RFC 3891—The Session Initiation Protocol (SIP) "Replaces" Header
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RFC 3892—The Session Initiation Protocol (SIP) Referred-By Mechanism
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RFC 3959—The Early Session Disposition Type for SIP
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RFC 3960—Early Media and Ringing Tone Generation in SIP
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RFC3966—The tel URI for telephone number
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RFC 3968—The Internet Assigned Number Authority (IANA) Header Field
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Parameter Registry for the Session Initiation Protocol (SIP)
RFC 3969—The Internet Assigned Number Authority (IANA) Uniform Resource
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Identifier (URI) Parameter Registry for the Session Initiation Protocol (SIP)
RFC 4028—Session Timers in the Session Initiation Protocol (SIP)
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RFC 4235—An INVITE-Initiated Dialog Event Package for the Session Initiation
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Protocol (SIP)
RFC 4244—An Extension to the SIP for Request History Information
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RFC 4317—Session Description Protocol (SDP) Offer/Answer Examples
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RFC 4353—A Framework for Conferencing with the SIP
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RFC 4475—Session Initiation Protocol (SIP) Torture
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RFC 4485—Guidelines for Authors of Extensions to the SIP
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RFC 4504—SIP Telephony Device Requirements and Configuration
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RFC 4566—SDP: Session Description Protocol.
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