How Often Will My Public Ip Address Change; What Is A Port Number - Talkswitch CT.TS005.003902 User Manual

propagate throughout the DNS system. It is possible that propagation could
take longer due to unforeseen traffic but it shouldn't take much more than
an hour at the most.

How often will my public IP address change?

This depends on the policies of your Internet Service Provider (ISP, the
company that provides your Internet access). It can be a matter of days,
weeks or even months before your IP address changes. A power loss or reboot
to your cable or DSL modem usually results in the assignment of a new IP
address.
TalkSwitch has the technology that helps keep this information up to date
so that the system can function properly after an IP address change has been
detected and updated.

What is a port number?

In an IP address like 64.26.209.103:5060, the port number is 5060; it is the
number after the colon.
Port numbers are required so that a computer or device can support multiple
applications or streams of simultaneous data communication. Each stream or
application uses a unique port number. You can think of it like mailing a
letter to a friend in an apartment building at a specific address. You need to
specify the apartment number as well as the address of the building, so that
the mail can reach the correct final destination.
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