Yealink T40G Administrator's Guide

Appendix
586
Appendix
RFC and Internet Draft Support
The following RFC’s and Internet drafts are supported:
 RFC 1321—The MD5 Message-Digest Algorithm
 RFC 1889—RTP Media control
 RFC 2112—Multipart MIME
 RFC 2327—SDP: Session Description Protocol
 RFC 2387—The MIME Multipart/Related Content-type
 RFC 2543—SIP: Session Initiation Protocol
 RFC 2617—Http Authentication: Basic and Digest access authentication
 RFC 2782—A DNS RR for specifying the location of services (DNS SRV)
 RFC 2806—URLs for Telephone Calls
 RFC 2833—RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
 RFC 2915—The Naming Authority Pointer (NAPTR) DNS Resource Record
 RFC 2976—The SIP INFO Method
 RFC 3087—Control of Service Context using SIP Request-URI
 RFC 3261—SIP: Session Initiation Protocol (replacement for RFC 2543)

Yealink T40G Specifications

General

SIP Accounts	3
Wall Mountable	Yes
Opus Codec	No
Display	2.3 inch 132x64-pixel graphical LCD
Network	Dual-port Gigabit Ethernet
PoE	Yes
Headset Support	Yes, RJ9 port
Power Adapter	Optional
Voice Codecs	G.722, G.711(A/μ), G.729AB, G.726
Local Phonebook	1000 entries