ISDN Line Parameter Tables

A-5

AT&T 5ESS Switch NI1

To order ISDN service for the AT&T® 5ESS switch, supply the telephone company with the information provided in Table A-2.

Table A-2 Line Configuration for AT&T 5ESS NI1

Required Information

Specification

 

 

Line Type

Standard (2B+D) National ISDN-1 line

Line Code

2B1Q

Interface Type

U interface

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†

Additional Call Offering (ACO)

Yes‡

Caller ID

Yes**

Call Forwarding Variable

Yes††

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

†Flexible Calling (FCO) provides 3-Way Calling (Call Conference), Hold, Drop, and Transfer from analog equipment attached to the modem.

‡Additional Call Offering (ACO) allows you to use incoming Dynamic Bandwidth Allocation (DBA) as well as Call Waiting.

**Caller ID is necessary to employ the Call Logging feature. If you would like to have Call Logging, you must order Caller ID. However, Caller ID itself, which requires an external device to monitor incoming calls, is not supported.

††Call Forwarding allows you to forward calls to another telephone number.