Placing the ISDN Order Through Your Telephone Company

A-4

AT&T To order ISDN service for the AT&T 5ESS Custom switch,

5ESS supply the telephone company with the information Custom provided in Table A-3.

Switch

Table A-3 Line Configuration for AT&T 5ESS Custom

Required Information

Specification

 

 

Line Type

Standard (2B+D) ISDN line with

 

point-to-point configuration

Line Code

2B1Q

Interface Type

U interface with an RJ-45 jack

Directory Numbers

2*

Maximum Terminals

1

Maximum B Channels

2

Actual User

Yes

Circuit-switched Voice

2*

Circuit-switched Voice Channel

Any

Circuit-switched Data

2

Circuit-switched Data Channel

Any

Terminal Type

A (Basic Terminal)

Display

Yes

Circuit-switched Voice Limit

2*

Circuit-switched Data Limit

2

Voice or Data

Both

Call Appearance Preference

Idle

Flexible Call Offering (FCO)

Yes

*The Directory Number, Circuit-switched Voice, and Circuit-switched Voice Limit parameters should be set to 2 to allow both analog ports to be used simultaneously. Otherwise, if those parameters are set to 1, the ISDN line can only place or receive one call at a time.

FCO (also referred to as Additional Call Offering) allows you to receive an incoming call while a dual-channel Multilink PPP call is active. If you do not want this feature, which may cost extra, FCO is not required.

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3Com 3C882 manual Switch