User's Manual

Configuration Description Expected result Possible results
configured period of time
before attempting to
reconnect.
IP Deskphone:
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 Deskphone: TCP
only Server: UDP +
TCP + TLS
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.
IP Deskphone: TLS
only Server: UDP +
TCP + TLS
The IP Deskphone
only has TLS
configured for
sending requests to
the server. The IP
Deskphone must
have a device
certificate installed
if the server is
configured for
mutual
authentication.
The IP
Deskphone
registers using
SIP over TLS. If a
device certificate
is provisioned,
and the server is
configured for
mutual
authentication,
then the IP
Deskphone
provides a
certificate during
the TLS
handshake.
Otherwise, server-
only
authentication is
used.
If the IP Deskphone is
unable to contact the
server, it waits a
configured period of time
before attempting to
reconnect.
UDP + TLS:
unsupported
Unsupported Unsupported Unsupported
IP Deskphone: TCP
+ TLS Server: UDP
+ TCP + TLS
The IP Deskphone
attempts to contact
the server using
TLS first, because
TLS has higher
priority than TCP.
The IP
Deskphone
registers
the same
as if it was
configured for TLS
only.
If the IP Deskphone is
unable to connect to the
server using TLS, it
attempts to connect using
TCP. If attempts to
connect using TLS and
TCP fail, the IP Deskphone
waits a configured period
Security
282 SIP Software for Avaya 1200 Series IP Deskphones-Administration September 2013
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