Dns Caching - Aastra 5i Series Administrator's Manual

IP Phone Administrator Guide
Network Settings

DNS Caching

The IP phones have the ability to cache DNS requests according to RFC1035 and
RFC2181. The phone caches DNS lookups according to the TTL field, so that the
phone only performs another lookup for an address when the TTL expires.
Configuring DHCP
You can enable and disable DHCP using the configuration files, the IP phone UI,
or the Aastra Web UI.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section,
Settings" on page A-7.
IP Phone UI
Step Action
1 Press on the phone to enter the Options List.
2 Select Administrator Menu.
3 Enter your Administrator password.
Note: The IP Phones accept numeric passwords only.
4 Select Network Settings.
5 Select option DHCP.
6 Press Change to set "Use DHCP?" to "Yes" (enable) or "No" (disable).
7 Press Done to save the changes.
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