Lucent Technologies Definity Enterprise Communication Server 8.2 User Manual

Issue 1

April 2000

Features and technical reference 

1331

Facility and Non-Facility Associated Signaling 

Refer to 

‘‘Telecommuting Access’’ on page 951

 for information about and field 

descriptions on the telecommuting screen.

Refer to 

‘‘Remote Access’’ on page 857

 for information about and field 

descriptions on the Remote Access screen.

Refer to 

‘‘Setting up remote access’’ on page 297

 for information about 

configuring remote access.

Refer to 

‘‘Feature Access Code’’ on page 619

 for information about and field 

descriptions on the Feature Access Code screen.

Refer to 

‘‘Class of Service’’ on page 532

 for information about and field 

descriptions on the Class of Service screen.

Refer to 

‘‘Station’’ on page 882

 for information about and field descriptions on 

the Station screen.

Refer to 

‘‘Class of Restriction’’ on page 520

 for information about and field 

descriptions on the Class of Restriction screen.

Refer to 

‘‘Setting up call forwarding’’ on page 292

 for information about 

configuring call forwarding.

Refer to 

‘‘Assigning coverage options’’ on page 291

 for information about 

assigning two coverage options.

Facility Associated Signaling (FAS) allows an ISDN-PRI T1/E1 interface 
D-channel to carry signaling information for all the bearer (B) channels on its 
associated span.

Non-Facility Associated Signaling (NFAS) allows 1 ISDN-PRI T1/E1 interface 
D-channel to carry signaling information for up to 300 bearer (B) channels on its 
associated spans. In other words, a D-channel can carry signaling information for 
numerous B-channels located on different DS1 circuit packs.

NFAS is only valid for T1/E1 Country Protocol 1. Digital T1 service is also 
sometimes called “DS1” to distinguish it from analog T1 service.

ISDN-BRI trunks don’t support Non-Facility Associated Signaling.