Session description protocol usage
SDP Headers Supported?
v--Protocol version Yes
o--Owner or creator and session identifier Yes
s--Session name Yes
t--Time description Yes
c--Connection information Yes
m--Media name and transport address Yes
a--Media attribute lines Yes
SDP and Call Hold
The IP Deskphone can support sending and receiving of hold using the method specified by
RFC2543 and RFC3261/3264.
Transport layer protocols
Protocol Supported?
Unicast UDP Yes
Multicast UDP No
TCP No
SIP messages supported by the IP Deskphone
188 SIP Software for Avaya 1200 Series IP Deskphones-Administration January 2012
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