Yealink SIP-T19 E2 T4 Series, Administrator'S Manual

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Troubleshooting
867
Source
Device
Source IP Source Port
Destination
Device
Destination IP
Destination Port
(Listening port)
Protocol Description of destination port
1024~65535 LDAP Server
IP address of
LDAP server Determined by
destination device.
TCP
LDAP protocol port, it is used to
obtain the contact information
from LDAP server.
1024~65535 NTP Server
IP address of NTP
server
123 UDP
NTP protocol port, it is used to
synchronize time from NTP time
server.
1024~65535 Syslog Server
IP address of
syslog server
514 UDP
Syslog protocol port, it is used
for IP phones to upload syslog
information to syslog server.
1024~65535 PNP Server
IP address of PNP
server (Default
value: 224.0.1.75)
5059 UDP/TCP
Protocol port, it is used to obtain
the URL of updating file from
PNP server.
Multipaging Multipaging
65000
65001
PC
IP address
of PC
Determined
by the
destination
IP phones
IP address of IP
phones
1~65535 TCP HTTP port (default value: 80)
1~65535 TCP HTTP port (default value: 443)
SIP
Server
IP address
of SIP
Server
1024~65534 UDP/TCP
SIP protocol port, it is used for
signaling interaction with SIP
server.
IP phone
of voice
gateway
IP address
of IP
phone or
voice
2~65535 UDP
RTP protocol port, it is used by
destination device to send or
receive audio stream.