ATT DEFINITY Communications System Generic 3 Instructions Manual

							Integrated Services  Digital  Network (ISDN) — Primary 
Rate Interface
Issue  3   March 1996
3-817
switch is a public network switch, it may be necessary to perform some 
administration on that switch, or to subscribe to a CPN/BN delivery 
feature. For example, CPN/BN delivery from the AT&T Switched Network is 
either on a subscription basis (that is, on all calls) or on a per call request 
basis. Per  call CPN/BN requests at the AT&T Switched Network are 
administered on the “ ISDN Trunk Group”  form. In either case, four types of 
CPN/BN delivery may be requested (CPN only, BN only, CPN preferred, 
and BN preferred).
Hardware and Software Requirements
For G3vs/G3s PBP, G3i-global and G3i:
nA TN767 or TN464C/D/E DS1 circ uit pack is required for assignment of a 
T1 signaling link and up to 24 ISDN-PRI Trunk Group memb ers. The DS1 
provides up to 24 ports.
nA TN464C/D/E DS1 circuit pack is required for assignment of an E1 
signaling link and up to 31 ISDN-PR I T ru nk  G ro u p   me m bers. The DS1 
provides up to 31 ports.
nA TN768 or TN780 Tone Clock circuit pack is required to provide 
synchronization for the DS1 circuit pack.
nA TN765 Processor Interface circuit pack is required for use with all DS1 
circuit packs.
For G3r, the following is required:
nA TN464C/D/E DS1 circuit pack for assignment of a T1 signaling link and 
up to 24 ISDN-PRI trunk group members. The DS1 provides up to  24 
ports.
nFor G3iV2 only, a TN464C/D/E DS1 circuit pack for assignment of an E1 
signaling link and up to 31 ISDN-PR I trunk group members. The DS1 
provides up to 31 ports.
nA TN767 is not needed, although it can be used for an a d ditional 
B-c hannel in a signaling group as long as there is a TN464C/D/E in that 
group to carry the D-channel.
nA TN765 is not needed.
Display-equipped voice terminals are required for the display of ISDN-PRI Call 
Identification Display information.
One processor interface link is required per ISDN-PRI for G3i, and G3vs/G3s 
only.
If CPN/BN to Host Call Identification is desired, a computer, such as a 3B2, is 
required for use as the ISDN Gateway.
ISDN-PRI software is required. 
						

							Feature Descriptions
3-818Issue  3   March 1996 
Hardware and software requirements for countries other than the United States of 
America are detailed in the Application Notes. 
						

							Inter-PBX Attendant Calls
Issue  3   March 1996
3-819
Inter-PBX Attendant Calls
Feature Availability
This feature is available with all Generic 3 releases.
Description
Allows attendant positions for more than one branch location to be concentrate d 
at one central, or main, location. Incoming trunk calls to the branch location, as 
well as attendant-seeking voice terminal calls, are routed over tie trunks to the 
attendants at the main location.
Inter-PBX Attendant Calls are incoming tie trunk calls from the branch location to 
the main location with the attendant group as the destination. If no attendant in 
the attendant group is available, these calls are queued.  When an attendant 
becomes available, the call is routed to that attendant for handling.  Calls can b e 
extended the same as if the call were an incoming call to the main location.  
When the attendant releases the call, the tie trunk associated with the call is tied 
up with the call until the call is dropped.
A  DEFI NI TY syst em Generic 3 can b e a branch or a main location for this feature. 
A branch location can have local attendants.  These local attendants can be 
accessed by the Individual Attendant Access feature.  The attendants at the 
main location are the local attendants for the main location and also the attendant 
for the Inter-PBX Attendant Calls.
Considerations
With Inter-PBX Attendant Calls, the numb er of attendants required at each 
branch location is reduced.  Also, users at each branch location can use the 
main location to access each of the other branch locations.
The Inter-PBX Attendant Calls feature can also be used within an ETN, where, for 
example, the attendant group for the network could be located at the main switch 
and serve other tandem switches connected by tie trunks.
Interactions
The following features interact with the Inter-PBX Attendant Calls feature.
nAttendant Control of Trunk Group Access
If Inter-PBX Attendant Calls is enabled, and a call at a branch location 
attempts to access a controlled trunk group, the call is routed to the local 
attendant at the branch location, if there is one.  If there is no local 
attendant, the call is routed to the attendant group at the main location. 
						

							Feature Descriptions
3-820Issue  3   March 1996 
nAttendant Display and DCS Attendant Display
In a DCS environment, an incoming Inter-PBX Attendant Call from a 
branch location is displayed at the attendant console the same as a local 
call.
In a non-DCS environment, an incoming Inter-PBX Attendant Call is 
displayed at the attendant  console as an incoming tie trunk call.
nAttendant Recall
If an attendant at the main location holds an Inter-PBX Attendant Call, the 
calling parties at the branch location cannot recall the attendant.
nCall Coverage
At a branch location with Inter-PBX Attendant Calls enabled, a call 
redirected to a coverage path with the attendant group as a coverage 
point skips that coverage point. It goes to the next coverage point at the 
local switch, if administered, or continues to ring at the extension that is 
the previous coverage point. If the attendant group ‘‘0’’ is the only 
coverage point, it continues to ring at the principal’s extension.
nCentralized Attendant Service  (CAS) 
CAS and Inter-PBX attendant calling cannot b e enable at the same time.
nDial Access to Attendant
Dial Access to Attendant should be administered  to the same digit on 
both the IAS main switch and the IAS b ranch switch. This is done via the 
dial platform. On the branch switch, the later PBX attendant access code 
(“Console Parameters”  form) should be administered to match the main 
PBXs attendant group dial access code.
nNight Service
The Inter-PBX Attendant Calls feature is deactivated when the branch 
location is p ut into night service, and reactivated when the branch location 
is taken out of night service.
Administration
Inter-PBX Attendant Calls is administered by the System Manager. The following 
items require administration:
nBranch location access to Inter-PBX Attendant Calls
nInter-PBX Attendant Calls Trunk Grou p
nInter-PBX Attendant Access Code
Hardware and Software Requirements
Requires a tie trunk g roup between the branch and main locations. No ad d itional 
software is required. 
						

							Intercept Treatment
Issue  3   March 1996
3-821
Intercept Treatment
Feature Availability
Intercept Treatment is available with all Generic 3 releases.
Description
Provides an intercept tone or a recorded announcement or routes the call to an 
attendant for assistance when calls cannot be complete d or when use of a 
feature is denied.
nIntercept Treatment — Tone
Provides a siren-type tone to internal calls that cannot be comp leted as 
dialed.
Intercept Tone is provided to voice terminals when users lift the handset 
and d o not dial within 10 seconds, pause longer than 10 seconds b etween 
digits during the dialing process, or remain connected to Loudspeaker 
Paging for longer than an administered interval.
When a single-line voice terminal user receives Interc ept Tone for 30 
seconds and does not hang up, then 10 seconds after the Intercept Tone 
stops, the user receives dial tone for a new call origination. Also, when the 
user does not hang up after all other p arties on the c all have hung up, then 
10 seconds after all other parties disconnect, the user receives dial tone 
for a new call origination.
When multiap pearance voice terminal users receive Interc ept Tone for 30 
seconds and do not hang up, the call appearance returns to i dle.  If the 
multiappearance user is the last party left on a call, the call appearance 
immediately returns to idle.
If a voice terminal extension is assigned a COS with Off-hook Alert, and 
the user of that voice terminal receives Intercept Tone for a specified 
period of time and does not hang up, an emergency call is placed to the 
attendant.
On DID calls, if the MFC (Multifrequency Compelled Signaling) Intercept 
Treatment is set to provide a tone, this signal is sent to the CO to indicate 
that the called number is invalid. (For further d etails, see the R2-MFC 
Signalin g feature description later in this chapter.)
On DOD calls using MFC signaling, if the PBX receives the MFC Interc ept 
Tone from the CO indicating the number called is invalid, the PBX sends 
an intercept signal to  the calling station.   
						

							Feature Descriptions
3-822Issue  3   March 1996 
nIntercept Treatment — Recorded Announcement
Provides a recorded announcement to DID and incoming Private Network 
Access calls that cannot be completed as dialed or that are transferred to 
incomp lete or restricted stations. The System Manager selects and 
records the message.
Toll charges do not apply to DID and Private Network Access calls routed 
to Recorded Announcement.
nIntercept Treatment — Attendant
Allows attendants to provide information and assistance to callers on all 
DID or incoming Private Network Access calls that cannot be completed 
as dialed or that are transferred to incomplete or restricted stations. 
Normal toll charges apply to these calls.
nIntercept Treatment — Station 
Allows a specific voice terminal to receive certain calls that cannot b e 
completed because of a controlled restriction (see Controlled Restrictions 
feature) or because the called party has activated Do Not Disturb . The 
controlled restrictions which can administered to send calls to station 
intercept are Outward, Termination,  and Station-to-Station.
The calling party hears audible ringing while the call is being routed to the 
voice terminal assigned for Intercept Treatment. The calling party receives 
no indication that the call is receiving Interc ept Treatment.
Considerations
The Intercept Tone lets a user know when a call c annot b e completed as  dialed.  
The user can then hang up or try the call again.  When DID and Private Network 
Access calls cannot be complete d as dialed, a record ed announcement  can be 
provided or, for more p ersonal service, the calls can be routed to an attendant or 
voice terminal user.
Recorded announcements can be used with the system. None, some, or all of 
these announcements can be used for Intercept Treatment.
Only one p erson can be connected to an announcement at any given time. The 
caller is always connected to the beginning of the announcement.
Interactions
nR2-MFC
For DID MF calls, whether the corresponding B.x signal or the Intercept 
Tone should be sent to the CO is administrable. The default is to send the 
standard DID/TIE/ISDN Intercept Treatment d esc rib e d in this section. If 
the option to send the B.x signal is set, then: 
						

							Intercept Treatment
Issue  3   March 1996
3-823
— For Group II type calls, the B.x signal for the intercept is sent to the 
CO.
— For non-Group II type calls, if the CO  dials an invalid number, the 
trunk is locked (regard less of this option). If the CO dials the 
number which is valid but not assigned, the Intercept Treatment 
Tone is sent to the CO.
nRecorded Announcement
Attendant Intercept and Recorded Announcement Intercept (both 
optional) cannot be used together. DID calls and Private Network calls 
cannot be assigned Intercept Treatment — Tone.
Administration
The Intercept Tone is standard and requires no administration. However, 
administration is required to d etermine whether DID and Private Network Access 
calls are routed to the attendant or to an announcement.   Administration is 
required to determine whether calls sent to interc ept because of controlled 
restrictions are routed to intercept tone, a voice terminal, an attendant, or an 
announcement. If an announcement is to be used, the announcement must  be 
administered. Intervals are administrable with the “ System Parameters”  form.
Hardware and Software Requirements
Requires announcement equipment and one port on an Analog Line circuit pack 
for each announcement for each external analog announcement device or an 
aux trunk port for each external auxtrk device. The Multiple Integrated 
Announcements allows equi p ping additional TN750C circuit packs. See the 
Record ed Announcement feature for more details.
Wit h DE FI NITY  system Generic 3i, a TN750 Announcement circ uit pack can be 
used to provide up to 128 (for G3i), or u p to 256 (for G3r) different 
announcements. The announcements can be recorded directly onto the TN750 
circuit pack. 
No announcement equipment is required when this circuit pack is used. No 
a d ditional software is required. 
						

							Feature Descriptions
3-824Issue  3   March 1996 
Intercom — Automatic
Feature Availability
This feature is available with all Generic 3 releases.
Description
Provides a talking path between two voice terminal users.  Calling users press 
the Automatic Intercom b utton and lift the handset, or vice versa.  The called user 
receives a unique intercom alerting signal, and the status lamp  associated with 
the Dial or Automatic Interc om button, if provided, flashes.
Considerations
With the Intercom—Automatic feature, users who frequently call each other can 
do so by pressing one button instead of dialing an extension numb er.
Single-line voice terminal users can receive Automatic Intercom calls, but cannot 
originate them.
A comb ination of the Intercom—Automatic and Intercom—Dial features c an be 
used between terminals so that Intercom—Automatic ap plies in one direction 
and Interc om—Dial ap plies in the other.
Two terminals with Intercom—Automatic to and from each other, or terminals with 
combined Intercom—Automatic and Intercom—Dial to each other, must be in the 
same Interc om group.
Interactions
The following features interact with the Intercom—Automatic feature.
nCall Coverage
Intercom calls are redirected only if the caller activates Go to Cover.
nData Privacy and Data Restriction
An extension with Data Privacy or Data Restriction activated cannot 
originate an intercom call.  Intercept tone is received when the ICOM 
button is pressed under this condition.
nIntercom—Dial 
This feature must be provided.  Users assigned an Automatic Intercom 
button must be a member of the same Dial Interc om g roup as the 
destination extension number. 
						

							Intercom — Automatic
Issue  3   March 1996
3-825
nSingle-Digit Dialing and Mixed Station Numbering
Prefixed extensions greater than five digits (including the prefix) in length 
cannot be assigned to intercom lists.
nClass of Restrictions (COR)
COR may be administered su ch that station A cannot d ial Station B. The 
user at Station A would receive intercept tone. However, Station A can be 
administered such that it has Intercom—Automatic capability to Station B. 
Thus A could call B. The System Manager has control of station 
restrictions and which stations are in the same Intercom group.
Administration
Intercom—Automatic is assigned on a per-voice terminal b asis by the system 
administrator.  Before Intercom—Automatic can be assigned, the associated 
Intercom group must  be established.  Each Intercom group requires the 
following administration:
nIntercom group number
nLength of dial c o de
nExtension number within the group
nDial c o des to access Intercom group members
Once the Intercom group is established, Automatic Intercom buttons can be 
assigned to memb ers of the group.  The following items must be a dministered for 
each button.
nIntercom group number to be accessed
nDial c o de assigned to group member to be accessed
Hardware and Software Requirements
No a d ditional hardware or software is required. Voice terminals equipped with a 
buttons and a status lamp are useful, but not required. 
						

							Feature Descriptions
3-826Issue  3   March 1996 
Intercom—Dial
Feature Availability
This feature is available with all Generic 3 releases.
Description
Allows multiappearance voice terminal users to gain rapid access to selected 
other voice terminal users within an administered group. Calling voice terminal 
users lift the handset, press the Dial Intercom button, and dial the 1- or 2-digit 
code assigned to the desired party. The called user receives alerting tone, and 
the status lamp associated with the Intercom button, if provided, flashes.
Considerations
With the Intercom—Dial feature, a group of users who frequently call each other 
can do so b y p ressing a Dial Intercom b utton and dialing a one- or two-digit code 
instead of dialing an extension number.
The maximum number of intercom groups that can be established varies 
according to the system. See Ap pendix A, System Parameters.
Single-line voice terminals can receive Intercom—Dial c alls, b ut cannot originate 
them.
A comb ination of Interc om—Dial and Intercom—Intercom can be used between 
terminals so that Intercom—Dial applies in one direction and Intercom—Intercom 
a p plies in the other.
A Interc om—Dial user can place an intercom call to all members in the group, 
including Intercom—Automatic memb ers.
Two terminals with Intercom—Dial to and from each other, or two terminals with 
combined Intercom—Dial and Intercom—Automatic to and from each other, 
must be in the same Intercom group.
Interactions
The following features interact with the Intercom—Dial feature.
nIntercom—Automatic
Users assigned this feature must be a member of a Dial Interc om group.