Avaya Configuring Dial Services Manual do Utilizador descarregar pdf (Página 27)

1-1

Chapter 1

Dial Services Overview

A dial service offers the user access to a switched network by means of a dial-up

line connection (also called a

switched line

connection). Dial-up lines are dynamic

connections that are active only on an as-needed basis — that is, when there is

data to send across the network, or when a dial line acts as a resource for a failed

or congested primary line. These lines can be a cost-effective alternative to

dedicated leased lines and packet networks, which are always available, regardless

of network trafﬁc.

For users who send a limited amount of data or whose data transmission is not

continuous, dial-up lines are less expensive than leased lines and they maximize

network performance and ﬂexibility.

This chapter introduces and provides information on all three dial services.

Bay Networks Dial Services

The router provides three types of dial services: dial-on-demand, dial backup, and

bandwidth-on-demand. Each dial service serves a different purpose:

•

Dial-on-demand

service

reduces your line costs by establishing a connection

between two devices only when there is data to send. You do not incur the cost

of a leased line that is active regardless of need.

•

Dial backup

service provides a backup WAN circuit when a primary (also

called leased) circuit fails. The backup circuit serves as an alternative path for

data to reach the destination.

•

Bandwidth-on-demand

service provides up to three secondary lines for a

congested primary line. These additional lines increase bandwidth for data

trafﬁc, improving communication and reducing network delays.

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 257 258

Sem comentários

Avaya Configuring Dial Services Manual do Utilizador Página 27