Avaya 1210 User Manual page 145

SIP
Session Initiation Protocol. This is the call-control protocol used
by your telephone.
SIP Proxy Server
A device on the network that acts on behalf of your telephone,
translating and routing call-control messages
SIP Registrar
A device on the network that manages user-location information.
SIP Uri
Analogous to a telephone number, e.g. SIP:rhood@example.net.
In fact, a URI may contain what at least appears to be a
telephone number, e.g., sip:+14085550100@172.16.0.222.
Special Prefix code (SPRE)
Special codes entered using the dialpad, followed by a two-digit
access code, that enable features (for example, Call Forward All
Calls requires entry of SPRE code + 74).
Soft keys
A set of keys programmed by your system administrator. These
four keys, directly below the display area, have four
programmable layers. These keys are also used to configure
parameters in the
Speakerphone Mode
The speaker and microphone in the base are in use instead of the
equivalent components in the handset or headset.
Special dial tone
The three consecutive tones followed by dial tone that you hear
when accessing IP Deskphone features.
Telephone Options
Terms you should know
menu.
145