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Overview of Voice over IP (VoIP) and Network Protocols
40 4600 Series IP Telephone LAN Administrator Guide
Figure 2: Initialization and Address Resolution Diagram
4600 Series IP Telephone
Port: 68
Port: [1024 - 5000]
Operating System
–selected
Port: [1024 - 5000]
Operating System –
selected
Port: [1024 - 5000]
Operating System
–selected (a new port
is used for each file
requested)
Port: [1024 - 5000]
Operating System
–selected
Initialization and Address Resolution
DHCP Server
Port: 67
DHCP (UDP/IP)
HTTP (TCP/IP)
TFTP Read Request (UDP/IP)
TFTP Server
Port: 69
Port: Operating
System - selected (a
new port is used for
each file transferred)
HTTP Server
Port: 80 (81 on CM)
HTTPS Server
Port:411
HTTPS (TCP/IP)
TFTP Data, ACKs & Errors (UDP/IP)
DNS Server
Port: 53
DNS (UDP/IP)
(4601, 4601+, 4602, 4602SW,
4602SW+, 4610SW, 4620, 4620SW,
4621SW, and 4622SW)
(4601, 4601+, 4602, 4602SW,
4602SW+, 4610SW, 4620, 4620SW,
4621SW, and 4622SW)