Avaya one-X 1603SW - Page 28

Network Requirements
28 Avaya 1603SW-I SIP Deskphones Administrator Guide
Table 5: Transmitted Packets (Source = SIP IP Telephone)
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
telephone’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
System-specific Any unused
port number
Transmitted signaling
protocol packets
TCP
RTCPMONPORT PORTAUD +
1 (if
PORTAUD
is even) or
PORTAUD –
1 (if
PORTAUD
is odd)
RTCP packets transmitted to
an RTCP monitor
UDP
System-specific Any unused
port number
Transmitted signaling
protocol packets
UDP