Canon imageRunner 6570 Network Manual page 247

DHCP
Dynamic Host Configuration Protocol. A protocol which automatically specifies the
network settings of a client on a TCP/IP network. Many of the settings required to set
up TCP/IP, which is the standard protocol of the Internet, can be made automatically
using DHCP.
Direct Sending
Use Direct Sending when the memory is full, and you still need to send a document.
Direct Sending scans and sends one page at a time without storing the document in
memory. This enables you to send a document even when the memory is full.
DNS
Domain Name System. The system that associates the IP address assigned to a
computer with the domain name.
DNS server
Domain Name System server. A server which maintains a database that translates
the domain names of Internet servers, such as www.w3.org, into Internet Protocol
(IP) addresses, such as "18.176.0.26". This enables clients to connect to a server
with a host name rather than a numeric IP address.
Domain
A management concept that divides large scale networks into groups for identifying
individual computers and users. The internet is managed by classifying domains
according to geographical location or type (business, organization, educational
institution, etc.).
dpi
Dots Per Inch. A measure of screen and printer resolution that is expressed as the
number of dots that a device can print or display per linear inch.
E
ECM
Error Correction Mode. Reduces system and line errors when sending or receiving
from another fax machine with ECM capability. ECM divides a page into blocks and
inspects each block for data lost through poor transmission. If part of the data is
missing in a certain block, ECM retransmits that data from the beginning of the block
until it confirms that all the data within the block has been transmitted successfully. In
this way, ECM guarantees that a good image can be received at the receiving end.
ECM is very effective where the telephone lines are in poor condition. However, ECM
slows the transmission speed, and you may turn this mode off, if it is not needed.
9
9-25
Glossary