Avaya 6211 Guia Do Utilizador

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In a permanent application, the switch establishes and maintains a
permanent connection between endpoints over dedicated (nailed-
up) DS0s on a private T1 or through a private line network service
such as ACCUNET Spectrum of Digital Services (ASDS).
Permanent applications include:  Cluster Controllers (CC) to
Front-End Processor (FEP) connections and LAN bridging. An
example of a permanent application is shown in Figure D-4.

V.35

HSL

TN767

TN756

V.35

V.35

HSL

SN270

ANN11E

SN255

Cluster

Controller

TN754

DEFINITY G3

DEFINITY G2

DS1

DS1

Tone

Detector

Tone

Detector

DSU

Access

Endpoint

Cluster

Controller

V.35

DDS56

HSL

Front

End

Processor

Private

Line

Network

DCP

DCP

DCP

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c

c

c

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There are two types of permanent connections:

d

— In this configuration, a permanent connection is

established between two PBXs.  The PBX may serve as a
tandem node or as a terminating node with HSLs connected to
each data endpoint.  The PBX is also capable of monitoring the
DS0 for on/off hook signaling information to determine if the
connection has been dropped.