User's Manual

Unsupported configurations cannot be saved. If the configurations are unsupported, the IP
Deskphone displays an error message.
The following is an example of an error message for unsupported configurations:
Unsupported: UDP + TLS
Unsupported: No protocols enabled.
Registration behavior based on configuration settings
The following table describes the behavior of the IP Deskphone when the IP Deskphone is
configured to communicate with a server using specific protocols.
Table 33: Registration results based on configuration
Configura
tion
Description Expected result Possible results
IP
Deskphon
e: UDP +
TCP
Server:
UDP +
TCP +
TLS
The IP Deskphone
allows protocols enabled
for communication with
the server.
The IP Deskphone
establishes a connection
to the server using TCP.
If the server does not
accept incoming
requests on TCP, it takes
approximately thirty
seconds for the initial
connection attempt to
fail, and then the IP
Deskphone attempts to
contact the server using
UDP. If this connection
also fails, the IP
Deskphone waits a
configured period of time
before attempting to
reconnect.
IP
Deskphon
e: UDP
Server:
UDP +
TCP +
TLS
The IP Deskphone only
has UDP enabled for
sending requests to the
server.
The IP Deskphone
registers using UDP as
the protocol.
If the IP Deskphone is
unable to contact the
server, it waits a
configured period of time
before attempting to
reconnect.
IP
Deskphon
e: TCP
only
Server:
UDP +
The IP Deskphone only
has TCP enabled for
sending requests to the
server.
The IP Deskphone
registers using TCP as
the protocol.
If the IP Deskphone is
unable to contact the
server, it waits a
configured period of time
before attempting to
reconnect.
Registration behavior based on configuration settings
SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012 233