Mitel Voice Processing Solutions Instructions Manual

Overview of TCP/IP 
Subnet Addressing 
Organizations are often assigned one Class B network number by the Internet 
Advisory Board. If the organization needs multiple network numbers to distinguish 
among its servers, the network administrator uses subnet addresses to refer to the 
multiple networks. Subnet addressing is a mechanism whereby address bits that 
would otherwise be part of the host number are designated as part of the network 
number. 
In a class B address, its format is...

Overview ofTCP/IP 
ARP, Address Resolution Protocol, translates IP addresses to Ethernet addresses. It 
maintains a table of both sets of addresses, which is built dynamically. 
As data moves up and down the TCP/IP layers, each layer must be able to handle it. 
Data is combined as it moves from applications to transport protocols, and then to 
the Internet Protocol. Many sources of data are combined, and then must be 
separated when they arrive at the destination network or host. II’ uses protocol...

Overview ofTCP/IP 
# /etc/services 
# format is: 
# service 
port/protocol aliases 
# 
# Network services 
# 
ftpdata 
20/tcp ftpd 
ftP 21/tcp 
telnet 
23/tcp telnetd -d 
smtp 
25/tcp 
bootps 
67/udp bootpd 
bootpc 68/udp bootp 
tftp 69/udp tftpd 
snmp lGl/udp snmpd 
echo 7/tcp 
echo 7/udp 
discard 9/tcp sink null 
discard 9/udp sink null 
daytime 13/tcp 
daytime 13/udp 
chargen 19/tcp ttytstsource 
chargen 19/udp ttytstsource 
time 37/tcp timserver 
time 37/udp timserver 
finger 79/tcp 
domain 53/tcp...

, - 
Overview of TCP/IP 
If two users are accessing the TELNET service, for example, the system would give 
each of them a different dynamically assigned port number for the source port, and 
the default port of 23 for the destination. The pair of port numbers, both source 
and destination, identifies a network connection. The combination of an II’ address 
and a port number is called a socket. A socket identifies a single network process 
within the Internet. A pair of sockets uniquely identifies a...

Overview of TCP/IP 
2-10 
The Domain Name Service is used in large interconnected networks because it 
avoids the problems of a large host table. It also eliminates the need to keep 
updating your table as new hosts are added or changed. DNS is assigned port 
number 53, and its service is called domain. Do not confuse it with name service, 
port 42 (this is an older name service). 
DNS is a set of distributed name servers which pass information to each other as 
needed. The naming conventions are...

This chapter describes the TCP/IP protocol suite and explains a number of specific 
concepts. If you are very comfortable working with TCP/IP, you can probably skip 
this chapter. 
TCP/IP protocols were developed for the ARPANET network of computers, 
administered by the Defense Communications Agency. This network began as an 
experimental packet switching network and the organizations involved with the 
project found it useful for their data communications. The TCP/IP protocol suite 
was adopred as a...

Overview of TCP/IP 
TCPAP 
Application 
Host-to-Host 
Transport (TCP) 
Internet Protocol 
w 
Network 
Access OSI 
Application 
Presentation 
Session 
Transport 
Network 
Data Link 
Physical 
Figure 2-1 TCP/IP and the OSI Model 
Transport Layer 
The full name for this layer is the Host-to-Host Transport Layer. It uses two 
protocols: Transmission Control Protocol (TCP) and User Datagram Protocol 
(UDP). TCP p rovides reliable (connection is made) data delivery service with error 
detection. UDP provides...

Overview of TCP/IP 
rip, the Routing Information Protocol, which is used by network devices 
to exchange routing information 
e 
NFS, the Network File System, which allows files to be shared by 
different hosts on the network. This protocol is not supported by the 
QNX 2 version of TCP/IP. 
The Application Layer corresponds to the top three layers in the OS1 model 
(Application, Presentation, and Session). 
You should be familiar with IP addresses, because they are used by the Internet 
Protocol to send...

f i 
To install, configure and use the Unified TCP/IP option, you mat have 
VoiceMemo software version 6.OA or later installed on your server. You also 
must have the 6.OA hardware, including the 6.OA Ethernet card. Ethernet 
cards used in 5.x servers are not usable. 
This chapter contains reference and background material for the hardware 
installation and configuration. Refer to the Task List for step-by-step instructions on 
Unified TCP/IP installation and configuration. 
ardware 
In order to connect...