ATT DEFINITY Communications System Generic 3 Instructions Manual

Call Waiting Termination
Issue  3   March 1996
3-467
Considerations
With Call Waiting Termination, the party who calls a busy single-line voice 
terminal does not have to hang up and try the call again later. Instead, the call 
waits at the called voice terminal until the called party hangs up on the current 
call.
Call Waiting Termination applies only to busy single-line voice terminals. Calls to 
multi-appearance voice terminals are route d to an idle call ap pearance and do 
not wait.
An analog voice...

Feature Descriptions
3-468Issue  3   March 1996 
Calling Line Identification (CLI) Prefix
Feature Availability
The Calling Line Identification (CLI) Prefix feature is available with G3V4 R elease 
3 and later releases.
Description
The Calling Line Identification (CLI) Prefix feature allows DEFINITY to modify 
calling party number (CPN) information for ISDN/PRI calls that come in to the 
switch on a given trunk group. These calls may terminate locally, or may be 
tandemed out to other private switches or...

Calling Line Identification (CLI) Prefix
Issue  3   March 1996
3-469
Interactions
Because this feature affects the calling party information for all c alls coming in on 
a given trunk group, other features that use the CPN will receive modified calling 
number information. However, the functionality of these features will not change. 
Terminal d isp lays for calls that have been mo dified with the CLI Prefix will reflect 
the modifications. 
The Message Sequence tracer continues to record  CPN...

Feature Descriptions
3-470Issue  3   March 1996 
nMalicious Call Trace - If the incoming CPN is affected by this feature, 
accurate lookup of the numb er may not be p ossible.
nNetwork Access - Public 
nNetwork Access - Private Premises Bases
nNetwork Access - Private Public Net Based (SDN)
nPC/PBX Connection
nPC/ISDN Connection
nTransfer (single-line and multi-ap p earance)
nTrunk-to-Trunk Transfer
nVoice Terminal Display - Calling Number Display (SID/ANI/Extn ID)
Administration
This feature can be...

Call-By-Call Service Selection
Issue  3   March 1996
3-471
Call-By-Call Service Selection
Feature Availability
This o ptional feature is available with  G3vs/G3s PBP, Generic 3i, and Generic 3r, 
and is not available with G3vs/G3s ABP.
Description
Call-By-Call Service Selection allows a single ISDN-PRI trunk group to c arry calls 
to many services or facilities (such as a SDN, MEGACOM telecommunications 
service, MEGACOM 800 service, and so on) and/or to carry calls using different 
Inter-exchange...

Feature Descriptions
3-472Issue  3   March 1996 
nOUTW A TS  B a n d  — WATS is a voice-grade service providing both voice 
and low-speed data transmission capabilities from the user’s location to 
defined service areas commonly referred to as bands.  Currently, the 
widest band is five.
nMEGACOM Service — Provides an AT&T service that provides unbanded 
long distance services using sp ecial access (PBX to 4ESS switch) from an 
AT&T node.
nMEGACOM 800 Service — Provides an AT&T service that provides...

Call-By-Call Service Selection
Issue  3   March 1996
3-473
Figure 3-2. Call-By-Call Service Selection Example
ISDN-PRI Messages and Information Elements 
Used for Call-By-Call Service Selection
Although the technical details of ISDN-PRI messages and information elements 
are not critical to implementing the ISDN-PRI application, the following details 
may aid in the understanding of some readers and are therefore included in this 
description.
Call-By-Call Service Selection allows the system to specify...

Feature Descriptions
3-474Issue  3   March 1996 
The system also checks all incoming ISDN-PRI calls for the presence of a 
Network Specific Facility information element.  If this information element is 
present, the system makes sure that the requested service is comp atible 
with the administration of the trunk.  If the requested service is not 
compatible with administration, the switch rejects the call.
For an outgoing call on a Call-By-Call trunk group, the Network Specific 
Facility information...

Call-By-Call Service Selection
Issue  3   March 1996
3-475
As previously mentioned, each Call-By-Call Service Selection trunk group can 
have as many as three UAPs.  The customer can assign either fixed or scheduled 
allocation plans for each Call-By-Call Service Selection trunk group, (see Screen 
3-30, Screen 3-31, and Screen 3-32) which are used to administer the Usage 
Allocation Schedule and plans).
nFixed
One plan a p plies at all times.  The minimum and maximum usages 
specified in this plan are...

Feature Descriptions
3-476Issue  3   March 1996 
Screen 3-32. CBC Service Type Usage Allocation
System administration allows the customer to have anything from a simple fixed 
usage allocation plan to a very flexible plan with many scheduling options. The 
customer can even start out with no allocation plan and b uild the plan as the 
need arises. This  allows  the customer to resp ond to periodic fluctuations in the 
environment in a more timely manner. The customer does not have to involve the 
network...