ATT DEFINITY Communications System Generic 3 Instructions Manual

Facility Test Calls (with Security Measures)
Issue  3   March 1996
3-737
Interactions
None.
Administration
Facility Test Calls is administered on a p er-system basis b y the System Manager.  
The Facility Test Calls access code must be assigned. Also, a user’s Class of 
Restriction must be a dministered with the Facility Access Trunk Test option in 
order for the user to make trunk test calls.
Hardware and Software Requirements
No a d ditional hardware or software is required. 

Feature Descriptions
3-738Issue  3   March 1996 
Facility and Non-Facility Associated 
Signaling
Feature Availability
This optional feature is available with all Generic 3 releases,  except G3vs/G3s 
ABP, when ISDN PRI software is purchased.
Description
Provides signaling for ISDN-PRI.
Facility Associated Signaling
Facility Associated Signaling (FAS) allows an ISDN-PRI DS1/E1 Interfac e
D-channel to carry signaling information for only those B-channels located on the 
same DS1/E1 facility (circuit pack)...

Facility and Non-Facility Associated Signaling
Issue  3   March 1996
3-739
Figure 3-16 shows a possible configuration involving three ISDN-PRIs b etween a 
G3 switch and another DEFI NIT Y syst em  or the  public network. With  DS1  (24 
channel) interfaces, two of the ISDN-PRIs contain a D-channel and 23 
B-c hannels, while the other ISDN-PRI contains 24 B-channels.  One of the 
D-channels is the Primary D-channel, and the other is the Secondary D-channel.  
Together, this p air of D-c hannels will...

Feature Descriptions
3-740Issue  3   March 1996 
nSystem Technician Commands
If a system technician command requests that a D-channel switch-over 
take place, the first action taken by the system will b e to tear down the 
signaling link on D1.  After this has b een completed, a message is sent on 
D2 to request that D2 become the active D-channel. D2 then b ecomes the 
active D-channel and the switch-over will be complete.
Considerations
NFAS allows a single D-channel to carry signaling information for...

Facility and Non-Facility Associated Signaling
Issue  3   March 1996
3-741
— A FAS Signaling Group must contain all the ISDN B-Channels on 
the DS1/E1 interface associated with the group’s D-channel, and 
cannot contain B-channels from any other DS1/E1 circuit pack. For 
24-channel DS1 b oards, some of the DS1 ports may use in-band 
(rob bed-bit) signaling and be members in a tie trunk group rather 
than an ISDN trunk group. These tie trunks cannot be members of a 
Signaling Group.
— There is no...

Feature Descriptions
3-742Issue  3   March 1996 
Flexible Billing
Feature Availability
Available with G3V4 a n d later releases. Flexible Billing is available in the United 
States for use with AT&T MultiQuest® 900 Vari-A-BillTM Service.
Description
With Flexible Billing the DEFINITY  switch or an a djunct can communicate with the 
AT&T network through ISDN PRI messages to change the rate at which an 
incoming 900-type call is billed. Rate change requests can b e made anytime 
after the call is answered...

Flexible Billin g
Issue  3   March 1996
3-743
Applications
The following list gives examples of when a customer might decide to change the 
rate for a call that is in progress:
nA new rate mi ght b e established for higher valued services such as 
requests for particularly valuable information, conversion of text mail to 
speech, or technical support.
nA flat rate might be desired for consultative support, warranty registration, 
maintenance contracts or for the recovery of a fixed-cost service or...

Feature Descriptions
3-744Issue  3   March 1996 
Considerations
Cellular End Offices and some other End Offices (NPA-NXX )  d o not have the 
necessary billing software to accept rate changes. Customers who receive a 
large percentage of calls from specific exchanges, g eographical areas or 
cellular callers should do a careful analysis before using Flexible  Billing.
Interactions
nCall Detail Recording (CDR)
If the User Data item is being recorded, the count for this item will increase 
when Flexible...

Generalized Route Selection (GRS)
Issue  3   March 1996
3-745
Generalized Route Selection (GRS)
Feature Availability
This optional feature is available when ISDN PRI software is purchased with all 
Generic 3 releases, except G3vs/G3s ABP. Generalized Route Selection is not 
available with G3vs/G3s ABP.
Description
Generalized Route Selection (GRS) provides the customer voice and  data call 
routing c a pabilities to select not only least cost routing,  b ut also optimal routing 
over the a p propriate...

Feature Descriptions
3-746Issue  3   March 1996 
nBand 
Id ent ifi es t he OUTW A TS  b a n d .  W i d e  Are a Telecommunications Service 
(WATS) is a voice-g rade service providing both voice and low speed data 
transmission calls to defined areas (bands) for a flat rate charge.
nInter-Exchange Carrier (IXC) 
Id entifies the specific common carrier, such as AT&T, to be used for a c all.
In GRS, there are five Bearer Capability Classes (BCCs).  Customers may specify 
routing for each BCC according to...