ATT DEFINITY Communications System Generic 3 Instructions Manual

							Subnet Trunkin g
Issue  3   March 1996
3-1115
Subnet Trunking
Feature Availability
This feature is available with all Generic 3 releases.
Description
Provides modification of the d ialed number so an AAR or ARS call can route over 
trunk groups that terminate in switches with different d ial plans.
Subnet Trunking provides digit insertion, deletion, pauses, and/or wait for dial 
tone in digit outpulsing, as required, to permit calls to route:
nTo or through a remote switc h
nOver tie trunks to private network switch
nOver CO trunks to the serving central office
All AAR and ARS calls ultimately reach a point where they can no longer route on 
a private network.  That is, the call reaches a point where another on-network 
switch is not available for the call.  (In an ARS stand-alone configuration, this is 
the originating switch.)  Assuming the c all is not denied at this point, then the c all 
must route to one of the following:
nDirectly to a party at the local switch.
nTo a party at a remote switch (without accessing the public network).
nThrough a remote switch to a p arty at a subtending location (without 
accessing the public network).
nDirectly to a WATS serving office.
nDirectly to a local CO or a FX CO, both of which may or may not provide 
dial access to a long-distance carrier.  (The alternative to dial access is for 
the central office to automatically p rovide access to a single long-distance 
carrier of the subscriber’s choice.)
nThrough a remote switch to the local or FX CO serving the remote switch.
nThrough a remote switch to the WATS office serving the remote switch.
nTo an EPSCS, Common CCSA office, or ETN office.
Subnet Trunking is not required on calls terminating directly to a party at the local 
switch.  AAR handles these calls.
Subnet Trunking is required on calls routing to or through a remote switch, 
regardless of the call’s destination. 
						

							Feature Descriptions
3-1116Issue  3   March 1996 
With direct access to a WATS, EPSCS, CCSA, or ETN office, Subnet Trunking is 
not normally used.  The called number on these types of calls is not normally 
modified.  Subnet Trunking is need e d only if the numb er is modified or if the call 
passes through some intermediate switch, such as a main.
Calls accessing a local or FX CO directly from the terminating switch normally 
require Subnet Trunking only if access to a long-distance c arrier is other than the 
carrier automatically provided by the CO. In this case, the appropriate dial 
access code is inserted into the digit string by the system.
Aside from the normal cases, Subnet Trunking can be used to provide added 
functionality to the system, for example, to convert an AAR number into an 
international numb er.  Also, Su bnet Trunking can modify a digit string so that a 
Remote Access trunk group can be used on calls.  This capability is called 
equivalent DID and may be useful when a location has Remote Access but does 
not have DID or NID.  (NID is the private network equivalent of DID.)
Add ition or d eletion of an Area Code on an ARS call does not require Subnet 
Trunking.  ARS handles it via c o de conversion, as required.
With AAR, an on-network number can be converted into a public network 
number.  In this case, the conversion may include an Area Code insertion via 
Subnet Trunking.
Any of three special characters may be used with Subnet Trunking:
nPause — Delays outp ulsing of subsequent digits for 1.5 seconds.
nWait — Can be administered in one of two ways.  In the first way, delays 
outpulsing of subsequent di gits for a preprogrammed interval (from 5 to 
25 seconds) or, if tone d etectors are provid e d, until dial tone is received 
from the d istant switch or the interval expires, whichever occurs first.  In 
the second way, d ial tone must b e received before any outpulsing is d one.
nConvert-to-tone — Causes all remaining digits to be outpulsed using tone 
signaling.
Use of these special characters is discussed in the following paragraphs.
During outpulsing of a digit string, it may be necessary to pause or wait for the 
distant switch to act upon the digits already sent. A programmed pause (a ‘‘,’’ 
symbol) is used when the required action by the d istant switch occurs within 1.5 
seconds. Multiple pauses can be used. A ‘‘wait for dial tone’’ character (a ‘‘+’’ 
symbol) is used to specify a longer interval with the option of sending or 
dropping after waiting a period of time for dial tone. The ‘‘time to wait’’ is the ‘‘off 
premises dial tone detect’’ time on the “System Parameters — Features” form. 
Receipt of dial tone automatically cancels the remainder of an interval when tone 
detectors are provided. If a dial tone detector is not available on a given call, the 
system uses the wait interval to d etermine when to resume outpulsing.  Multiple 
waits can be used. If ‘‘outpulse without tone’’ on the “ System Parameters Country  
						

							Subnet Trunkin g
Issue  3   March 1996
3-1117
O ptions”  form is set to no, the trunk is dropped and intercept tone is returned to 
the calling party.
Dial tones will also b e heard  if Network Feed b ack During Tone Detect is set to no 
on the “System Parameters Country Op tions”  form. Silence will be heard 
otherwise.
The type of outpulsing, either dial pulse (rotary) or tone, used on a call is 
specified by the trunk group selected for the  call.  In some cases, it may be 
necessary to assure that a p ortion of the digits are sent using tone signaling.  The 
convert-to-tone character (a ‘‘%’’ symbol) is used to indicate that all digits 
remaining in the string to be outp ulsed will use tone signaling.
Digit deletion always b e gins with the first digit. Subnet Trunking can delete up to 
11 d i gits and can insert up to 36 digits. The last four d igits dialed are normally 
retained. Thus, the new digit string can be up to 40 digits long. Typical uses of 
digit insertion are the conversion of an AAR call to an international call and the 
insertion, in the US, of a long-distance carrier code, 10xxx, on a domestic call.
The insertion of a long-distance carrier access code in the string of digits to be 
outpulsed does not usually require a pause or wait symbol. Interconnecting 
offices, other than crossbar offices, can handle the code and the called number 
as a single string. However, a crossbar office returns dial tone after receiving the 
long-distance carrier code.  Thus, a pause or wait is required between the 
long-distance carrier code and the called number. Likewise in some countries, 
access to international trunks returns dial tone after dialing the international 
access code (for example, 00 in Belgium).  Note that the user will not typically 
hear this dial tone, especially if Network Feedback is set to no on the “System 
Parameters — Features”  form.
Considerations
Subnet Trunking allows AAR and ARS calls to access the public network. With 
AAR, the major advantage is that the call continues although no on-network 
routes are available to handle the call.  With ARS, the major advantage is that 
calls destined for the public network can route partially over the private network, 
if there is one. This saves toll charges for a portion of the call.
It is not necessary to include the trunk access code for the trunk group 
connecting to the distant switch in the string of d igits to be outpulsed. In fact, 
such inclusion must be avoided.  Access to the interconnecting trunk group is 
automatic.  Outpulsing the access code, therefore, serves no purpose, and will 
cause mishandling of the call at the d istant end.
The wait interval is a System Parameter.  This interval can be from 5 to 25 
seconds (in increments of one second).
Up to four special characters can be included in a string of  digits to be 
outpulsed.  Each special character counts as two digits. 
						

							Feature Descriptions
3-1118Issue  3   March 1996 
Interactions
Subnet Trunking is a function associated with the AAR and ARS features. 
Interactions are the same as those given for AAR and ARS.
Administration
Subnet Trunking is set by the System Manager as a part of AAR and/or ARS 
administration.  The following items require administration:
nWait — Specify the wait interval used with Subnet Trunking.
nRouting Pattern — Specify the number of digits to delete (beginning with 
the first d igit) and the specific string of digits to insert. Special characters, 
if any, are included in the inserted string.
Hardware and Software Requirements
Add itional tone detectors such as TN744C-Tone Detector/Call Classifier, 
TN748C-Tone Detector, TN420C-Tone Detector, or TN2182-Tone 
Clock/Detector/Generator may be required if the s pecial “wait” character is used 
frequently. TN420C, TN744C, and TN2182 sup p ort A-law.
Private Network Access or ARS software is required for Subnet Trunking. 
						

							Switch Based Bulletin Board
Issue  3   March 1996
3-1119
Switch Based Bulletin Board
Feature Availability
This feature requires DEFINITY Communications System G3V3 or later release 
software. (G3V3 d o es not have to be enabled on the “System-Parameters 
Customer-Options” form.) High priority messaging requires G3V4 or later release 
software.
Description
This feature provides a switch based bulletin board that allows customers and 
AT&T technical personnel to communicate with each other. A SAT user who has 
appropriate permissions is able to leave and receive messages on the Switch 
Based Bulletin Board. In addition, with G3V4 and later release software, AT&T 
services’ personnel can leave high-priority messages that are displayed on the 
first ten lines of the bulletin board for easy recognition.
This feature is not intended as a substitute for existing escalation procedures b ut 
as an aid to the existing process.
Access to the Switch Based Bulletin Board
When the user logs in to the system, they are notified of any messages in the 
bulletin board and the date of the ‘‘last entered’’ message. If the b ulletin  board is 
at 80% or more c a pacity, an additional message is displayed indicating how full 
the bulletin b oard is (for examp le, 86%). 
If a high-priority message exists, the user is also notified at login that a 
high-priority message exists and when it was entered. In addition, all lo g ged in 
users receive a message on the SAT prompt line indicating that high-priority 
messages have been entered on the bulletin b oard, but only after a command 
has been executed on these SATs. In other words, if the SAT is idle, the message 
will not ap pear until someone executes a command on that SAT.
The users are responsible for maintaining the bulletin board.
Users who have ‘‘Ad minister Features’’ p ermissions can enter or change a 
message except in the first ten lines on the bulletin board. Users who have 
‘‘Disp lay Ad min an d Maint Data’’ permissions can display, print, and schedule to 
print the contents of the bulletin b oard. Users with “init” and “inads” logins can 
edit the first ten lines of p a ge one of the bulletin board. This area is reserved for 
high-priority messages. 
						

							Feature Descriptions
3-1120Issue  3   March 1996 
Bulletin Board Commands
System Commands Used to Access the Switch
Based Bulletin Board
Two c ommands change bulletin board and display bulletin board were  added 
to access the Switch Based Bulletin Board.
To enter a message into the Switch Based Bulletin Board:
1. Log in to the system with ‘‘Ad minister Features’’ p ermissions.
2. Enter the command change bulletin-board.
3. Enter your message.
4. Commit your message by pressing ‘‘Enter.’’
To display messages in the Switch Based Bulletin Board: 
1. Log in to the system with ‘‘Display Admin’’ and ‘‘Maint Data’’ permissions.
2. Enter the command display bulletin board.
Commands Used to Change Switch Based
Bulletin Board Messages
The control keys used for changing existing feature forms are used to change 
mess a ges on the Switch Based Bulletin Board. To save changes to the “Bulletin 
Board Message” field, execute the save translation command. This also 
ensures that messages will not be lost during a reset level 3, 4, or 5.
The following characters are allowed in the “Text”  field:
nUppercase and lowerc ase letters, spaces, numerals, and #$%^ &*()_
- + =[]{};’./?@!~|‘\:.
Tab characters are not allowed. If invalid characters are entered in the 
“Message” field, a system message is displayed that prompts the user to enter 
the correct characters for the “ Message”  field.
Entering Messages into the Switch Based 
Bulletin Board
After entering the change bulletin board command into the system, the user can 
change any message in the “ Message” field with the exception of high-priority 
mess a ges. The bulletin board can contain up to three pages of text. The first ten 
lines of the first p a ge are reserved for high-priority messages that c an be entered 
only b y AT&T service personnel. Each  page of the “ Message”  field contains up to 
20 lines of text with 40 characters per line. Each line of the bulletin board has an  
						

							Switch Based Bulletin Board
Issue  3   March 1996
3-1121
“Associated Date” field that is populated automatically by the system each time 
the form is submitted. 
Displaying Messages on the Switch Based
Bulletin Board
While entering the display bulletin-board command into the system, the user 
can request, print, or schedule to print any message on the Switch Based 
Bulletin Board.
Considerations
User considerations:
nOnly one user can change a bulletin b oard message at a time.
nThe user must have the proper permissions to access the bulletin board.
nThe user must maintain the information stored in the bulletin b oard and is 
the responsibility of the user to delete old messages. The user can delete 
information b y pressing the ‘‘space’’ b ar as the first character in a line, and 
then pressing the return key.  If the bulletin board is full, any new 
messages overwrite old messages.
System considerations:
nThe switch must have G3V3 or later software. (G3V3 does not have to b e 
enabled on the “System-Parameters Customer-Options” form.)
nTwo new commands, change bulletin-board and  display bulletin-board 
are ad ded to the system commands.
nThe bulletin board provides three pages for each message, each page 
(except page 1) has 20 lines of text, and each line can have as many as 
40 characters. The first line of the first page is reserved for future 
enhancements.
Administration
To use the Switch Based Bulletin Board feature, a user must have the correct 
permissions administered in the “Command Permission Categories” screen.
nTo display messages, a user must have the “ Disp lay Admin and Maint 
Data”  field set to 
yes in the “Command Permission Categories” screen.
nTo change messages, a user must have the “ Ad minister Features” field 
set to 
yes on the ‘Command Permission Categories’ screen. 
						

							Feature Descriptions
3-1122Issue  3   March 1996 
Feature Initialization and Recovery
Feature recovery from a reset condition:
nThe bulletin board does not lose information during a reset level 1 or level 
2 and is read in from ta pe during reset levels 3, 4, and 5. 
						

							System Measurements
Issue  3   March 1996
3-1123
System Measurements
Feature Availability
This feature is standard with all Generic 3 releases except G3vs/G3s ABP. To 
receive this feature with G3vs/G3s ABP, you must purchase the System 
Measurements O ption package or the Basic Call Center O ption Package.
NOTE:
Security Violations is always provided, even with G3vs/G3s ABP when 
neither the System Measurements Option p a ckage nor the Basic Call 
Center Option Package is purchased.
Description
Provides reports on items such as trunk group usage, hunt group usage and 
efficiency, attendant group activity and efficiency, and security violations.
Individual reports are available for each of the following:
nAttendant Groups
nAttendant Positions (G3rV1, G3V2, and later releases)
nAutomatic Circuit Assurance
nBlockage Study  (G3rV1, G3V2, and later releases)
nCall Rate
nCall Summary
nCall By Call Trunk Grou p
nCoverage Paths
nCoverage Principals
nDS1 Link Performance Measurements
nDS1 Facility Link Performance Measurements (G3rV1, G3V2, and later 
releases)
nHunt Groups
nLightly Used Trunks  G3vsV1/G3sV1, G3iV1, G3i-Global, G3V2, and later 
releases)
nLoad Balance Study (G3rV1, G3V2, and later releases)
nModem Pool  Group s
nOutage Trunks
nPerformance Attendant Group
nPerformance Hunt Grou p 
						

							Feature Descriptions
3-1124Issue  3   March 1996 
nPerformance Trunk Group
nPerformance Summary
nProcessor Occupancy and Communications Links
nRoute Patterns
nSecurity Violations
nSystem Status
nTone Receiver
nTraffic Summary (G3rV1, G3V2, and later releases)
nTrunk Group Hourly (G3rV1, G3V2, and  later releases)
nTrunk Group Summary
nWideband Trunk  Group Hourly (G3V2 and later releases)
nWideband Trunk  Group  Summary (G3V2 and later releases)
All reports are on-demand reports. None are given automatically. Reports are 
available on the G3-MT or a remote administration terminal. The reports can be 
printed if a printer is associated with the terminal. The  reports can also b e 
scheduled to print at the system printer via the Report Scheduler and System 
Printer feature.
Considerations
Reports provided by System Measurements contain data that is useful to 
determine group efficiency. Details of specific items on the reports, as well as 
guidelines to use the data provided, are given in 
DEFI NI TY Com munications 
System Generic 3 Version 4 Traffic Reports
, 555-230-511.
Traffic measurements are automatically accumulated by the system and are 
available on demand. However, reports are not archived. If needed, reports must 
be requested periodically. Obtaining a printed copy can aid in maintaining a 
history of the system traffic.
Detailed information of each call handled by a specific trunk group, if required, 
must be provided by the CDR feature. Processed CDR data can also provide 
detailed information on trunk group usage. However, if individual call details are 
not required for bill-back or cost-allocation, System Measurements should be 
considered as the means to determine and maintain trunk group efficiency.
Interactions
None.