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Configuring FT1 Services

117345-B Rev. 00

8-9

Setting the FDL Mode for ESF Line Types

The FT1 interface selects a facility data link (FDL) mode only when the Line Type

parameter is configured as ESF (see “Setting the FT1 Line Type” on page 8-6

Select one of the following ESF line types:

• ANSI 403 -- The default; conforms to the 1989 ANSI T1.403 specification

(Carrier-to-Customer Installation DS1 Metallic Interface)

• AT&T 54016 -- Conforms to the 1989 AT&T specification (Requirements for

Interfacing Digital Terminal Equipment to Services Employing the Extended

Superframe Format)

• None

See the FDL Configuration parameter on page A-46

for information.

Setting the Remote FDL HDLC Address Mode

You can select the FDL HDLC address mode to determine how the local FDL

responds to HDLC addresses in messages from the remote FDL.

Set the FDL address mode to BY or AZ for this FT1 interface.

See the Remote FDL HDLC Address Mode parameter on page A-47

for

information.

Accepting or Rejecting Port Loopback Requests

By default, the FT1 port accepts requests from a remote device to go into

loopback mode. During loopback, the port loops receive data back onto the T1

transmit path. The remote or intermediate test equipment then performs

diagnostics on the network between the equipment and the port.

To prevent the port from accepting loopback requests, you can disable detection of

remote loop-up and loop-down code.

See the Accept Loopback Request parameter on page A-47

for information.

When you enable Accept Loopback Request, you can set the type of loopback you

want. See “Setting a Loopback Configuration” on page 8-10

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Avaya Configuring WAN Line Services Manual do Utilizador Página 169