Avaya 9608 - Switching and Transferring Calls

Other network considerations
Issue 1 May 2011 41
Transmitted packets (source = SIP Deskphone)
Destination Port Source Port Use UDP or TCP?
53 Any unused
port number
Transmitted DNS messages UDP
67 68 Transmitted DHCP
messages
UDP
80 unless explicitly specified
otherwise (i.e. in a URL)
Any unused
port number
Packets transmitted by the
deskphone’s HTTP client
TCP
123 Any unused
port number
Transmitted SNTP
messages
UDP
The number used in the
Source Port field of the SNMP
query packet received by the
deskphone
161 Transmitted SNMP
messages
UDP
443 unless explicitly specified
otherwise (i.e. in a URL)
Any unused
port number
TLS/SSL packets
transmitted by the
deskphone’s HTTP client
TCP
514 Any unused
port number
Transmitted Syslog
messages
UDP
CNAPORT Any
otherwise
unused port
number
Transmitted CNA
registration messages
TCP
The port number specified in
the test request message
50000 Transmitted CNA test results
messages
UDP
System-specific Any unused
port number
Transmitted signaling
protocol packets
TCP
FEPORT or the port number
specified in a CNA RTP test
request
PORTAUD,
which must
be in the
range
specified by
the
RTP_PORT
_LOW and
RTP_PORT
_RANGE
parameters
or the port
number
reserved for
CNA RTP
tests
Transmitted RTP and SRTP
packets
UDP
1 of 2