Yealink SIP-T48G Administrator's Manual page 804

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Source
Source IP Source Port
Device
1024~65535
68
1024~65535
1024~65535
1024~65535
1024~65535
PC IP
784
Destination
Destination IP
Device
IP address of
SNMP Server
SNMP server
IP address of
DHCP Server
DHCP server
IP address of
LDAP Server
LDAP server
IP address of
NTP Server
NTP server
IP address of
Syslog Server
syslog server
IP address of
PNP server
PNP Server
(Default value:
224.0.1.75)
Multipaging Multipaging
Destination Port
Protocol Description of destination port
(Listening port)
Determined by SNMP protocol port, it is used
destination UDP to communicate with SNMP
device. server.
DHCP protocol port, it is used
67 UDP to obtain IP address from
DHCP server.
Determined by LDAP protocol port, it is used
destination TCP to obtain the contact
device. information from LDAP server.
NTP protocol port, it is used to
123 UDP synchronize time from NTP
time server.
Syslog protocol port, it is used
for IP phones to upload
514 UDP
syslog information to syslog
server.
Protocol port, it is used to
5059 UDP/TCP obtain the URL of updating file
from PNP server.
65000
65001
1~65535 TCP HTTP port (default value: 80)