Avaya BCM 4.0 Networking Guide de configuration télécharger pdf (Page 47)

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Chapter 2 System telephony networking overview 47

BCM 4.0 Networking Configuration Guide

• DTMs configured for T1 can have digital lines configured as Groundstart, E&M, Loop,

or DID.

Target lines are virtual communication paths between trunks and telephones on the BCM system.

They are incoming lines only, and cannot be selected for outgoing calls or networking

applications. With target lines, you can concentrate incoming calls on fewer trunks. This type of

concentration is an advantage of DID lines. BCM target lines allow you to direct each DID number

to one or more telephones. VoIP trunks also require target lines to direct incoming traffic. Target

lines are numbered 241 to 492.

Telephones can be configured to have an appearance of analog lines or multiple appearances of

target lines.

Types of private networks

There are several ways you can create private networks. Configuration can be based on such things

as cost of trunks, proximity of network nodes, size of the private network, and business

requirements for communications.

VoIP-based networking also requires an understanding of IP features such as codecs, jitter buffers,

Quality of Service (QoS) function, and silence suppression. Refer to “Silence suppression” on

page 703 for more information.

The services provided within networks is based on the type of trunks and the protocols assigned to

the trunks. All trunks within the network should be running the same protocols, to provide a

technically sound and stable network.

The following links are procedures to set up basic networks to advanced networks, using the

support protocols within BCM:

• “Routing-based networks using T1 E&M lines” on page 47

• “PRI networking using Call-by-Call services” on page 49

• “PRI SL-1/Q.Sig/DPNSS and VoIP trunk networking” on page 49

Routing-based networks using T1 E&M lines

By properly planning and programming routing tables and destination codes, an installer can

create a dialing plan where T1 E&M lines between BCM systems are available to other systems in

the network

Figure 4 shows a network of three BCM systems. Two remote systems connect to a central system.

Note: PRI B-channels cannot be assigned as line appearances. PRI

B-channels, or “trunks”, can only be configured into PRI line pools for

inbound routing through target lines with receive digits or outbound routing

through destination codes.

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