3Com ISDN Modem manual AT&T 5ESS Switch NI1, Table A-2 Line Configuration for AT&T 5ESS NI1

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.