ATT DEFINITY Communications System Generic 3 Instructions Manual

							MERLIN® /System 25 Voice Terminal Su p port  —  731xH 
Series
Issue  3   March 1996
3-887
Control Outward Restriction  c o r
Control Station to Station Restriction c s r
Automatic Call-Back Call callback Q
ACD Hunt Group Supervisor Assist  sa S
Control Termination Restriction c t r
Emergency Call to Attendant Queue 
Full Redirectionqf E
All Call-Ap pearances on Station are 
Busy BB
CAS Main in Night Service  n n
Call Forward to CAS-Main attendant  f f
Service Observe agent & one other 
party    o
Held Call Timed Reminder  hc
Call Redirected do to coverage 
criteria cover c
Terminate call via intercom ICOM i
Terminate call via ARS  ARS A
Terminate call via Call-Forward   forward f
Terminate call via Call-Park p ark p
Automatic Call Back Activate ACB Q
Queued at terminator  QTQ q
Terminate via Call Waiting wait w
Terminate to Attendant via Trunk 
Group control control
Terminate to Attendant via Re call Call recall
Terminate to Attendant via Return Call  return
Terminate to party with Do Not Disturb   DND D
Table 3-70. Merlin Terminal Codes — Continued  
Call Type Digital Hybrid
Continued on next page 
						

							Feature Descriptions
3-888Issue  3   March 1996 
Considerations
The following features of the 731xH series voice terminals are affected when 
used with the DEFINITY switch:
nACD 
The 731x hybrid terminals are not recommended for ACD agent 
applications because in heavy traffic conditions display information may 
be lost.
nCall Ap pearance Button LEDs
Both the red and green LEDs associated with the first 10 dual-LED feature 
buttons are supported for the 7313H, 7314H, 7315H, 7316H, and 7317H 
voice terminals when these buttons are administered as call or brid ged 
appearances:
— The red ‘‘on’’ LED indicates the call appearance that is selected 
when the user goes off-hook.
— The green ‘‘on’’ LED indicates the call at that a ppearance or at a 
bridged appearance.
nFeature Buttons
Call a ppearances or bridged ap pearances can be assigned only to 
feature b uttons 1 to 10 on the 731xH voice terminals.
nFeature Button LEDs
The 731xH voice terminals have two LEDs (one red and one green) 
associated with each administrable feature button. The DEFINITY switch 
only supports the green LEDs associated with the feature b uttons. 
O peration of the green LEDs is identical to operation of the 7400 series 
terminals.
nHFAI
The DEFI NI TY switch replaces the HFAI capability on System 25 with the 
Internal Automatic Answer (IAA) feature. When an internal call arrives at 
an idle 731xH series terminal that has IAA activated, the speakerphone 
and microphone at that terminal activate and automatically answer the 
call. When this occurs, the calling voice terminal receives a distinctive 
tone b urst, while the called voice terminal emits a distinctive tone b urst via 
the speaker.
nMessage Button
The mess a ge button is not supported for the 731xH voice terminals. As a 
result, pressing the Message button on one of these voice terminals has 
no system or local effect. 
						

							MERLIN® /System 25 Voice Terminal Su p port  —  731xH 
Series
Issue  3   March 1996
3-889
nMessage LED
The Message LED is supported for the 731xH voice terminals. This LED is 
controlled by existing AUDIX and Leave Word Calling features on the 
DEFI NI TY switch. With these terminals, users cannot control the state of 
the Message LED by pressing the Message buttons. The Message LED 
operation is i dentical to that provided by the 7400 series voice terminals.
The Mess a ge Retrieval and Retrieval Using Display modes are not 
supported for ATL terminals. As a result, these modes do not affect 
Message LEDs on ATL terminals.
nMicrophone
Microphone button operation is supported for the 731xH voice terminals. 
Each of these voice terminals sup p ort the following capabilities:
— If the terminal is off-hook on the handset, pressing the Microphone 
button has no effect.
— If the terminal is off-hook with the speakerphone active, pressing 
the Microphone b utton toggles the mi crophone between ‘‘on’’ and 
‘‘off.’’
nMode Switch
The DEFI NI TY switch does not support the mode switch for testing or 
programming.
nRecall Button
The Recall button is not supported for the 731xH voice terminals. As a 
result, the Recall button has no system or local effect when p ressed by the 
user.
nSpeakerphone
Full speakerphone and headset-adjunct operation are sup p orte d for the 
731xH voice terminals. For each of these voice terminals, the DEFINITY 
switch supports the following capabilities:
— Activation/deactivation of the terminal’s microphone via the fixed 
MIC button or HFAI/MIC b utton.
— Activation/deactivation of the speakerphone function via the 
Speakerphone button.
— Control of the terminal’s microphone and speaker LEDs in 
accordance with the states of the mi crophone and sp eakerphone.
If the speakerphone function is activated while the terminal is off-hook on 
the handset, the handset becomes inactive and the microphone (and 
speaker) become active.
nStop and Pause (Drop and Hold) Sub-designated buttons
The Stop and Pause functions are not supported for the 731xH voice 
terminals. 
						

							Feature Descriptions
3-890Issue  3   March 1996 
Misoperation Handling
Feature Availability
Misoperation Handling is available with all Generic 3 releases. G3V4 a n d later 
releases provide for modified misoperation alerting.
Description
Misoperation Handling defines the treatment of calls when a misoperation 
occurs. A misoperation occurs when calls are left on hold when the controlling 
station g oes on hook.
For exam ple, a misoperation can occur under either of the following conditions:
1. When a voice terminal with a call on hold goes on-hook during a feature 
operation prior to completion of that operation (in some cases g oing 
on-hook completes the operation, as in call transfer). For  example,  a 
misoperation occurs when a user places a call on hold, begins to transfer 
the call, dials an invalid extension number, and then hangs up.
2. When the system enters night service while attendant consoles have calls 
on hold.
With G3V4 a n d later releases, the system administrator can alter the standard 
Misoperation Handling to ensure that an external caller is not left on hold 
indefinitely, or dropped by the system after a misoperation with no way to reach 
someone for help.
Misoperation Handling varies considerably depending upon system 
administration, and the conditions that are in effect when the call is p laced on 
hold. The following sections describe common Misoperation Handling scenarios.
Standard Operation
Standard Misoperation Handling is in effect when “Intercept Treatment on Failed 
Trunk Transfer” is “Y” and either:
nThe “ Misoperation Alerting”  field on the “ Feature-Related System 
Parameters”  form is set to n.
nThe software release is earlier than Generic 3 Version 4.
Standard Misoperation Handling is dependent on the type of voice terminal in 
use when the misoperation occurs (analog single-line, or digital 
multi-ap pearance).
Analog Operation
The following sc enario d escribes a typical misoperation on an analog terminal. 
						

							Misoperation Handling
Issue  3   March 1996
3-891
1. While connected to an incoming external call, an analog station user 
flashes with the intent of transferring the call to another terminal.
2. The user hears d ial tone and then dials an invalid extension and hangs up.
3. A misoperation has occurred. The analog station user will receive priority 
ringback indefinitely
Digital Operation
The following sc enario d esc ribes a typical misoperation on a di gital terminal.
1. While connected to an incoming external call, a digital station user places 
the call on hold with the intent of transferring the c all to another terminal b y 
pressing Transfer.
2. The user hears d ial tone and then dials an invalid extension and hangs up.
3. A misoperation has occurred. The held call remains on hold indefinitely 
with a flashing  call a p pearance lamp.
G3V4 and Later Releases
G3V4 and later releases allow the system administrator to select Misoperation 
Alerting as an option for Misoperation Handling. With this option, calls receive 
different Misoperation Handling depending upon: the type of voice terminal in 
use when the misoperation occurs (digital multi-appearance, analog single-line, 
or attendant console); and the type of call on hold when the misoperation occurs. 
The following list describes the three call types used to determine Misoperation 
Handling. The scenarios following the Call Type list describe typ ical 
misoperations with Misoperation Alerting enabled.
nCall Type 1: An outgoing public network call is classified as Type 1 when 
it is ringing or answered. An incoming call is classified as Type 1 when it is 
answered.
nCall Type 2: An incoming external public network call that has not yet 
been answered is classified as Type 2. (A misoperation cannot occur with 
a Type 2 call because an unanswered incoming call cannot be placed on 
hold without being answered first.)
nCall Type 3: All other calls, that is, all internal calls, conference calls, and 
tie trunk calls of any type are classified as Type 3.
Analog Operation
The following two scenarios describe typ ical misoperations on an analog 
terminal.
Scenario 1
1. While connected to an incoming external call (Call Type 1), an analog 
station user flashes with the intent of transferring the call to another 
terminal. 
						

							Feature Descriptions
3-892Issue  3   March 1996 
2. The user hears d ial tone and dials an invalid extension. The user then 
hears interc ept tone. 
3. At any point after this, when the user hangs up, the call re-alerts the user 
for 15 seconds, and is then route d to the attendant.
Scenario 2
1. While connected to an incoming external call (Call Type 1), an analog 
station user flashes with the intent of placing the current call on hold while 
calling another extension.
2. The user hears d ial tone and dials the CAS Remote Hold/Answer 
Hold/unhold access code.  
3. The user hears d ial tone, d ials and talks with the second call, and then 
hangs up.
4. A misoperation has occurred because the first call has been left on hold.
5. The terminal is alerted for 15 se conds with normal ringing and then the c all 
is routed to an attendant.
6. If the first call has not been answered by the expiration of the timer, the 
call is dropped by the system.
Digital Operation
The following sc enario d escribes a typical misoperation on a di gital terminal.
1. While connected to an incoming external call (Call Type 1), a digital 
station user places the call on hold with the intent of transferring the c all to 
another terminal.
2. The user hears d ial tone and then dials an invalid extension and hangs up.
3. A misoperation has occurred. 
4. The call on hold re-rings the terminal with a normal ring (not priority 
ringing) for the number of rings indicated by call coverage administration.
5. After ringing for the a dministered number of rings, the call is directed to 
the terminal’s administered  coverage path, which can direct the caller to 
an announcement and/or disconnect them.
Attendant Console
A misoperation only occurs on an attendant console when the system enters 
night service with calls on hold at an attendant console. The following sc enario 
describes a typical misoperation on an attendant console.
1. The system enters night service with calls on hold at an attendant c onsole.
2. All calls on hold on the console start re-alerting (as if the held call timed 
reminder had expired).  
						

							Misoperation Handling
Issue  3   March 1996
3-893
3. When the calls start re-alerting, a timer is started. The timer is set to the 
duration entered in the “Alerting (sec)” field on the “Attendant Console”  
form.
4. If the attendant has not answered the call by the time the timer has 
expired, the call is routed to the system night service destination. (If still 
not answered the call will be dropped by the night service disconnect 
timer.)
Interactions
nAttendant Lockout
The attendant lockout feature is temporarily disa bled on calls that are 
re-alerting the attendant console following a misoperation. This allows the 
calls to be answered by the attendant.
Administration
To enable G3V4 and later release misoperation alerting, enter y in the 
Misoperation Alerting field on the “Feature-Relate d System Parameters”   form. 
For complete instructions for administering Misoperation Handling, see 
Misoperation Handling in the 
DEFINITY Communications System Generic 3 
Version 4 Imp lementation,
 555-230-655, or DEFINITY Communications System 
Generic 3 V2/V3 Implementation
, 555-230-653.
See the c ountry applications notes for complete instructions for administering the 
Misoperation Handling feature to meet France Typ e Approval requirements.
Hardware and Software Requirements
No a d ditional hardware or software is required. 
						

							Feature Descriptions
3-894Issue  3   March 1996 
Modem Pooling
Feature Availability
This feature is available with all Generic 3 releases.
Description
Allows switched connections between d i gital data en d points  (data modules) 
and analog data endpoints and acoustic coupled modems. The  analog data 
endpoint can be either a trunk or line circuit.
Data transmission between a d i gital data en d point and an analog endpoint 
requires a conversion resource since the DCP format used b y the d ata module is 
not comp atible with the mo dulated signals of an analog modem. The conversion 
resource translates the DCP format into modulated signals and vice versa. 
The Modem Pooling feature provides pools of conversion resources.
Inte grated conversion resources  and combined  conversion resources  are 
available with the system.  The integrated type has functionality integrated on the 
TN758 Pooled Modem circuit pack, which provides two conversion resources 
and each one emulates a Trunk Data Module cabled to a 212 Modem. This 
integrated type is not available for countries that use A law. The combined type is 
a Trunk Data  Module  cabled to any Trunk Data Module-compatible modem to 
provide a conversion resourc e.  Combined type applies to all system 
independent of system companding.
When a conversion resource is required, the system queries the d i gital data 
module associated with the call to determine if its options are compati ble with 
those supported by the modem pools. If the d ata module options are not 
compatible, the originating user receives interc ept treatment. If the options are 
compatible, the system o btains a c onversion resourc e from the a p propriate pool.  
If a conversion resourc e is not available, the user receives reorder treatment. If 
all d ata calls, including analog, are not successfully established, the call will be 
disconnected within 15 seconds (handshake time-out).
In almost all cases, the system can detect the need for a conversion resource. 
Data calls originated from an analog data endpoint to a d igital d ata endpoint 
require that the user indicate the need for a conversion resource, since the 
system considers an analog call origination as a voice call. This need is 
indicated by dialing the Data Origination Ac cess Code before dialing the digital 
data endpoint. Use of Data Call Preindication before One-Button Transfer To 
Data is recommended when establishing d ata calls that use toll network facilities.  
Needed conversion resources are reserved before any toll charges are incurred. 
						

							Modem Poolin g
Issue  3   March 1996
3-895
The DEFI NI TY s yst em  provides a ‘‘HOLD Time’’ parameter to sp ecify the 
maximum time any conversion resource may be held but not used (while a data 
call is in queue).
Combined conversion resources additionally supports the following 
configurations:
nIBM bisynchronous protocols typically used in 3270 and 2780/3780 
applications. Both require 2400 bps or 4800 b ps, half-duplex, 
synchronous transmission.
nInteractive IBM-TSO  a p p lications using 1200 bps, half-duplex, 
asynchronous transmissions.
nDATAPHONE II switched network modems supporting asynchronous and 
synchronous communications, and autobaud at 300, 1200, or 2400 b ps.
nDEFI NI TY s yst em  Generic 3 can operate up to 19.2 kbps.
nDifferent pools can have different data transmission characteristics.
The following modem options are supported by the integrated (only) pool:
nReceiver Resp onds to Remote Loop
nLoss of Carrier Disconnect
nSend Space Disconnect
nReceive Space Disconnect
nCF-CB Common
nSpeed, Duplex, and Synch (administered )
Considerations
Modem Pooling offers a pool of conversion resources which increase data call 
flexibility. Conversion resources allow analog data endpoints, using modems, to 
communicate with digital data endpoints (using data modules).  Also, pooling of 
conversion resources allows maximum use of such facilities.
Data Call Preindication is recommended for off-premises data calls involving toll 
charges.
On data calls between a d ata module and an analog data end point, 
Return-to-Voice releases the conversion resource and returns  it to the pool. The 
voice terminal user is then connected to the analog data endpoint.
For traffic purposes, DEFINITY system  Generic 3  accumulates data on modem 
pooling calls separate from voice calls. Measurements on the pools are also 
accumulated. 
						

							Feature Descriptions
3-896Issue  3   March 1996 
When a voice terminal user places a data call to d i gital data endpoint and does 
not transfer the call to another digital data endpoint, but uses a mo dem or 
acoustically coupled modem, the user must dial the Data Origination access 
code assigned in the system b efore dialing the distant endpoint.
DEFI NI TY s yst em  Generic 3i can support u p to five pools; Generic 3s can 
support up to two pools, and Generic 3r can support up to 63 pools. The pools 
may be c ombined, integrated, or any mix thereof. Each pool has a c a pacity of up 
to 32 conversion resources.
Use of Modem Pooling cannot be restricted. Also, queuing for conversion 
resources is not provided, although calls queued on a hunt group retain reserved 
conversion resources while queued.
Mixing of mo dems from different vendors within a combined pool should be 
avoided since a difference in transmission characteristics may exist. Mixing is 
possible, but satisfactory results are not g uaranteed.
Data transmission characteristics (speed, d uplex, and synchronization mo de), as 
administered, must be i dentical to the Trunk Data Module and modem optioning 
by the customer.
Each data call that uses Modem Pooling uses four time slots (not just two). As a 
result, heavy usage of Modem Pooling could affect the Trunk Data Mo dule bus 
blocking characteristics.
Tandem Switches will not insert a pooled modem. It is the resp onsibility of the 
originating switch to do so.
Interactions
The following features interact with the Modem Pooling feature.
nData Call Setu p
Data calls to or from a Trunk Data Mo dule cannot use Mo dem Pooling.
nData-Only Off-Premises Extensions
Modem Pooling is not p ossible on calls to or from a Data-Only 
Off-Premises Extension, when this type of digital data endpoint uses a 
Trunk Data Module.
nData Privacy and  Data Restriction
The insertion of a modem pool d oes not turn off Data Privacy and/or Data 
Restriction.