Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
967 Trunk Group 
17
CDR FEAC
Unrestricted Call List
Trunk Group 
Use the Trunk Group screen to set basic characteristics for every type of trunk 
group and to assign ports to the group. This section lists and describes all the 
fields you might see on the screen. Many fields are dependent on the settings of 
other fields and only appear when certain values are entered in other fields on the 
screen. For example, the entry in the Group Type field may significantly change 
the content and appearance of the Trunk Group screen.
For descriptions of the unique fields used with ISDN trunks, see ‘‘
ISDN trunk 
group’’ on page 738. 51 10 10 x
60 10 10 x
61 10 10 x
70 10 10 x
71 10 10 x
80 10 10 x
81 10 10 x
90 10 10 x
91 10 10 x
Valid entries Usage
x
Enter x to require an account code from a call whose facility 
COR requires a Forced Entry of Account Code.
Valid entries Usage
x
Enter x to assign the dialed string to one of the system’s 
Unrestricted Call Lists (UCL).
Dialed String Min Max Toll List 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
968 Trunk Group 
17
Field descriptions for page 1
The figure below shows a common configuration for page 1 of the Trunk Group 
screen when the Group Type field is 
tie. This screen is only an example, and the 
fields shown below may change or disappear according to specific field settings.
Screen 210. Tie Trunk Group
Group Number
This field displays the group number assigned when the trunk group was added.
NOTE:
For trunk groups connecting 2 switches in Distributed Communication 
System networks, Lucent recommends that you assign the same group 
number on both switches.
add trunk-group next Page 1 of x
                                 TRUNK GROUP
 Group Number: ___ Group Type: ________ CDR Reports: _
   Group Name: ___________________________ COR: __ TN: ___ TAC: ____
    Direction: ________ Outgoing Display? _ Trunk Signaling Type: ____
  Dial Access? _ Busy Threshold: ___         Night Service: _____
 Queue Length: ___                                   Incoming Destination: _____
    Comm Type: _____ Auth Code? _
Trunk Flash? _
BCC: _ ITC? ____
 TRUNK PARAMETERS
    Trunk Type (in/out): ____________     Incoming Rotary Timeout(sec): __
     Outgoing Dial Type: _________                  Incoming Dial Type: ________
                                               Disconnect Timing(msec): ____
        Digit Treatment: __________                             Digits: ____
                                                     Sig Bit Inversion: none
Analog Loss Group: ___  Digital Loss Group: ___
Incoming Dial Tone? _
Bit Rate: _____ Synchronization: _____  Duplex: ____
  Disconnect Supervision - In? _ Out? _
  Answer Supervision Timeout: ___           Receive Answer Supervision? _ 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
969 Trunk Group 
17
Group Type
Enter the type of trunk group.
Valid entries Usage
Access  Use access trunks to connect satellite switches to the main 
switch in Electronic Tandem Networks (ETN). Access trunks 
do not carry traveling class marks (TCM) and thus allow 
satellite callers unrestricted access to out-dial trunks on the 
main switch. Allows Inband ANI.
APLT Advanced Private Line Termination (APLT) trunks are used in 
private networks. APLT trunks allow inband ANI.
CAMACAMA trunks route emergency calls to the local community’s 
Enhanced 911 systems.
CO CO trunks typically connect your switch to the local central 
office, but they can also connect adjuncts such as external 
paging systems and data modules.
CPE Use CPE trunks to connect adjuncts, such as paging systems 
and announcement or music sources, to the switch.
DID Use DID trunks when you want people calling your 
organization to dial individual users directly without going 
through an attendant or some other central point. Allows 
Inband ANI.
DIOD DIOD trunks are two-way trunks that transmit dialed digits in 
both directions. In North America, use tie trunks for 
applications that require two-way transmission of dialed digits. 
Allows Inband ANI.
DMI-BOS Digital Multiplexed Interface – Bit-Oriented Signaling 
(DMI-BOS) trunks allow communication with systems using 
DMI-BOS protocol. DMI-BOS trunks allow inband ANI.
FX An FX trunk is essentially a CO trunk that connects your 
switch directly to a central office outside your local exchange 
area. Use FX trunks to reduce long distance charges if your 
organization averages a high volume of long-distance calls to a 
specific area code. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
970 Trunk Group 
17
ISDN Use ISDN trunks when you need digital trunks that can 
integrate voice, data, and video signals and provide the 
bandwidth needed for applications such as high-speed data 
transfer and video conferencing. ISDN trunks can also 
efficiently combine multiple services on one trunk group.
You cannot enter isdn unless the ISDN-PRI field, the 
ISDN-BRI Trunks field, or both have been enabled on the 
System-Parameters Customer-Options screen.
RLT Release Link trunks work with Centralized Attendant Service 
in a private network.
Tandem Tandem trunks connect tandem nodes in a private network. 
Tandem trunks allow inband ANI.
Tie Use tie trunks to connect a switch to a central office or to 
another switch in a private network. Tie trunks transmit dialed 
digits with both outgoing and incoming calls, and allow inband 
ANI.
WATS Use WATS trunks to reduce long-distance bills when your 
organization regularly places many calls to a specific 
geographical area in North America. Outgoing WATS service 
allows calls to certain areas (“WATS bands”) for a flat monthly 
charge. Incoming WATS trunks allow you to offer toll-free 
calling to customers and employees.
Valid entries Usage 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
971 Trunk Group 
17
CDR Reports
NOTE:
For ISDN trunk groups, the Charge Advice field affects CDR information. 
For CO, DIOD, FX, and WATS trunk groups, the Analog PPM field affects 
CDR information.
Group Name
 
COR
Valid entries Usage
y
All outgoing calls on this trunk group will generate call detail 
records. If the Record Outgoing Calls Only field on the CDR 
System Parameters screen is n, then incoming calls on this 
trunk group will also generate call detail records.
n Calls over this trunk group will not generate call detail records.
r (ring-intvl) CDR records will be generated for both incoming and outgoing 
calls. In addition, the following ringing interval CDR records 
are generated:
nAbandoned calls: The system creates a record with a 
condition code of “H,” indicating the time until the call was 
abandoned.
nAnswered calls: The system creates a record with a 
condition code of “G,” indicating the interval from start of 
ring to answer.
nCalls to busy stations: The system creates a record with a 
condition code of “I,” indicating a recorded interval of 0.
Valid entries Usage
1 to 27 
characters Enter a unique name that provides information about the trunk 
group. Don’t use the default entry or the group type (DID, 
WATS) here. For example, you might use names that identify 
the vendor and function of the trunk group: USWest Local; 
Sprint Toll, etc.
Valid entries Usage
0
 to 95  Enter a class of restriction (COR). Classes of restriction control 
access to trunk groups, including trunk-to-trunk transfers. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
972 Trunk Group 
17
Tip:
Remember that facility restriction levels (FRL) are assigned to classes of 
restriction. Even if 2 trunk groups have classes of restriction that allow a 
connection, different facility restriction levels may prevent operations such 
as off-net call forwarding or outgoing calls by remote access users.
TN
Tip:
Double-check your entry. If you accidentally enter an unassigned tenant 
partition number, the system will accept the entry but no calls will go to the 
trunk group.
TA C
Enter the trunk access code (TAC) that must be dialed to access the trunk group. A 
different TAC must be assigned to each trunk group. CDR reports use the TAC to 
identify each trunk group. 
CO Type
This field appears when the Country field is 14 and is used only by trunk group 
members administered on a TN464D vintage 2 or later DS1 circuit pack.
Valid entries Usage
1
 to 20 
(G3si/csi)Enter a Tenant Partition number to assign this trunk group to 
the partition.
1 to 100 (G3r)
Valid entries Usage
1-4 digit 
numberEnter any number that fits the format for trunk access codes or 
dial access codes defined in your dial plan.
*, #* and # may be used as the first character in a TAC.
Valid entries Usage
analog
  This field specifies whether the trunk group is connected to 
analog or digital facilities at the central office.
digital 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
973 Trunk Group 
17
Protocol Type
This field specifies the type of line signaling protocol used for DID and DIOD 
trunk groups. This field appears when the Country field is 15 and is used only by 
trunk group members administered on a TN2199 or TN464D vintage 3 or later 
circuit pack.
Direction
This field appears for all trunk groups except DID and CPE.
Outgoing Display
This field allows display phones to show the name and number of the trunk group 
used for an outgoing call before the call is connected. This information may be 
useful to you when you’re trying to diagnose trunking problems.
CESID I Digits Sent 
For emergency 911 service, your switch may send Caller’s Emergency Service 
Identification (CESID) information to the central office or E911 tandem switch. 
This digit string is part of the E911 signaling protocol. This field appears when 
Group Type is cama.
Valid entries Usage
inloc
 (Incoming local) Enter the protocol the central office is using for this 
trunk group. Only the inloc protocol provides ANI.
intol (Incoming toll)
Valid entries Usage
incoming
Enter the direction of the traffic on this trunk group. The entry 
in this field affects which timers appear on the Administrable 
Timers page.
outgoing
two-way
 
Valid entries Usage
y
Displays the trunk group name and number.
n  Displays the digits the caller dials. 
Valid entries Usage
1 to 3 digits Determine the correct entry for this field by talking to your 
E911 provider. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
974 Trunk Group 
17
Trunk Signaling Type
This field controls the signaling used by members in private network trunk groups, 
mainly in Italy, Brazil, and Hungary. This field appears if the Group Type is 
access, aplt, diod, rlt, tandem, or tie. Entries in this field affect which timers 
appear on the Administrable Timers page.
Valid entries Usage
cont
 
(continuous)E&M trunks in Italy, Brazil, and Hungary can use either 
continuous or discontinuous signaling. Each entry specifies a 
set of signals and available timers used in the process of setting 
up and releasing connections. The type of signaling you select 
on your switch must match the signaling type administered on 
the far-end switch. Use these values only when all trunk group 
members are assigned to ports on a TN464F, TN2464, or 
TN2140 circuit pack. Entering one of these values causes the 
Send Release Ack, Receive Release Ack, and Send Answer 
Supervision fields to appear. Refer to ‘‘
Trunk Type (in/out)’’ 
on page 984 for more information.
dis 
(discontinuous)
blank If this field is blank, ports from any other tie trunk circuit pack 
may be added as trunk group members.
Use the following entries for tie trunks in Main-Satellite/Tributary networks. Each 
entry defines a function of the trunk group in the network. Use these values only 
when all trunk group members are assigned to a TN497 circuit pack.
tgu
(for outgoing 
trunks)Enter 
tgu at the main switch to administer a tie trunk group 
connected to a satellite switch. (This same group should be 
administered as 
tge at the satellite.)
tge
(for incoming 
trunks)Enter 
tge at a satellite switch to administer a tie trunk group 
connected to the main switch. (This same group should be 
administered as 
tgu at the main switch.)
tgi
(for internal 
trunks)Enter 
tgi at to administer a two-way tie trunk group between 2 
satellites or between the main switch and a satellite. (This trunk 
group should be administered as 
tgi on both switches.) 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
975 Trunk Group 
17
Dial Access
This field controls whether users can route outgoing calls through an outgoing or 
two-way trunk group by dialing its trunk access code. Allowing dial access does 
not interfere with the operation of AAR/ARS.
!SECURITY ALERT:
Calls dialed with a trunk access code over WATS trunks bypass 
AAR/ARS and aren’t restricted by facility restriction levels. For 
security, you may want to leave the field set to n unless you need dial 
access to test the trunk group.  This field also controls the signaling used by members in public network digital 
trunk groups. This field displays if the Group Type field is 
access, aplt, rlt, 
tandem, or tie. Entries in this field affect which timers appear on the 
Administrable Timers page.
DIOD trunks support pulsed and continuous E&M signaling in Brazil and 
discontinuous E&M signaling in Hungary. Refer to DEFINITY ECS Application 
Notes for Type Approval for more information. Use the following entries for 
DIOD trunks. Use these values only when all trunk group members are assigned 
to a TN464F (or later version) or TN2464 circuit pack.
pulsed
cont
discont
blank Brazil E&M trunks can use continuous and pulsed E&M. For 
continuous E&M signaling, set this field to 
cont. For pulsed 
E&M signaling, set this field to 
pulsed. A blank setting 
provides R2 signaling.
Hungary uses discontinuous E&M signaling when this field is 
dis.
Valid entries Usage
y
Allows users to access the trunk group by dialing its access 
code.
n Does not allow users to access the trunk group by dialing its 
access code. Attendants can still select this trunk group with a 
Trunk Group Select button.
Valid entries Usage 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Screen reference 
976 Trunk Group 
17
Busy Threshold
Use this field if you want attendants to control access to outgoing and two-way 
trunk groups during periods of high use. When the threshold is reached and the 
warning lamp for that trunk group lights, the attendant can activate trunk group 
control: internal callers who dial out using a trunk access code will be connected 
to the attendant, and the attendant can prioritize outgoing calls for the last 
remaining trunks. Calls handled by AAR and ARS route patterns go out normally.
Night Service
This field sets the destination to which incoming calls go when Night Service is in 
operation. If a Night field on the Group Member Assignments page is 
administered with a different destination, that entry will override the group 
destination for that trunk. CPE, DID, and DIOD trunk groups do not support night 
service.
Tip:
Whenever possible, use a night service destination on your switch: 
otherwise some features won’t work correctly, even over a DCS network.
Queue Length
Outgoing calls can wait in a queue, in the order in which they were made, when all 
trunks in a trunk group are busy. If you enter 0, callers receive a busy signal when 
no trunks are available. If you enter a higher number, a caller hears confirmation 
tone when no trunk is available for the outgoing call. The caller can then hang up 
and wait: when a trunk becomes available, the switch will call the extension that 
Valid entries Usage
1 
to 99 
(
G3si/csi)Enter the number of trunks that must be busy in order to light 
the warning lamp on the Attendant Console. For example, if 
there are 30 trunks in the group and you want to alert the 
attendant whenever 25 or more are in use, enter 
25.1 to 255 (G3r)
Valid entries Usage
blank Leave this field blank if the Trunk Type (in/out) field is not 
auto/….
An extension 
number (can be 
a VDN)Enter the extension of your night service destination.
attdCalls go to the attendant and are recorded as Listed Directory 
Number (LDN) calls on call detail records.