Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Instructions Manual

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
427 Administered Connection 
15
Administering Administered Connections
1. Choose one of the following data modules and administer all fields:
nData Line Data Module (use with Data Line circuit pack)
nProcessor/Trunk Data Module (use with one of the following:)
— MPDMs, 700D, 7400B, 7400D, or 8400B
MTDMs, 700B, 700C, 700E, or 7400A
nProcessor Interface Data Module (refer to DEFINITY ECS 
Administration for Network Connectivityfor more information)
nX.25 Data Module (refer to DEFINITY ECS Administration for 
Network Connectivity for more information)
n7500 Data Module (use with ISDN Line 12-BRI-S-NT or ISDN 
Line 12-BRI-U-NT circuit pack)
nWorld Class Core BRI Data Module (use with wcbri)
2. On the DS1 Circuit Pack screen, administer all fields. Refer to ‘‘
DS1 
Circuit Pack’’ on page 613 for more information. (Use with switch node 
carriers.)
3. On the Access Endpoint screen, administer all fields. Refer to ‘‘
Access 
Endpoint’’ on page 481 for more information.
4. Choose one of the following trunk groups and administer all fields. Refer 
to ‘‘
ISDN trunk group’’ on page 750 and ‘‘Trunk Group’’ on page 980 for 
more information.
nISDN-BRI
nISDN-PRI
nTie
5. On the Class of Restriction screen, administer all fields. Refer to ‘‘
Class of 
Restriction’’ on page 533 for more information.
6. On the Class of Service screen, administer all fields. Refer to ‘‘
Class of 
Service’’ on page 545 for more information.
7. On the Dial Plan Record screen, administer the Local Node Number field 
with a number from 1-63 that matches the DCS switch node number and 
the CDR node number. Refer to ‘‘
Dial Plan Record’’ on page 607 for more 
information.
8. On the Administered Connection screen, administer all fields. Refer to 
‘‘
Administered Connection’’ on page 485 for more information.
9. On the Station screen, assign one button as ac-alarm. Refer to ‘‘
Station’’ on 
page 894 for more information.
10. On the Attendant Console screen, assign one button as ac-alarm. Refer to 
‘‘
Attendant Console’’ on page 498 for more information. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
428 Administered Connection 
15
Interactions
nAbbreviated Dialing
Use Abbreviated Dialing entries in the 
Destination field. Entries must 
comply with restrictions.
nBusy Verification of Stations and Trunks
This feature does not apply to access endpoints because they are used only 
for data.
nCall Detail Recording
For an AC that uses a trunk when CDR is active, the origination extension 
is the originator of the call.
nClass of Restriction
Reserve a COR for AC endpoints and SDDN trunks. This restricts 
endpoints that are not involved in AC from connecting to SDDN trunks or 
endpoints involved in AC.
nClass of Service/Call Forwarding
Assign to an AC endpoint a COS that blocks Call Forwarding activation at 
the endpoint.
nDigital Multiplexed Interface (DMI)
Use DMI endpoints as the destination in an AC. DMI endpoints do not 
have associated extensions, so do not use them as the originator in an AC.
nFacility Test Calls
The feature does not apply to access endpoints because an access endpoint 
acts as an endpoint rather than as a trunk.
nModem Pooling
If you require a modem in an AC, one is inserted automatically. If no 
modem is available, the connection is dropped.
nNon-Facility Associated Signaling (NFAS) and D-Channel Backup
Auto restoration for an AC that is initially routed over an NFAS facility 
may fail if the only backup route is over the facility on which the backup 
D-channel is administered. The backup D-channel may not come into 
service in time to handle the restoration attempt. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
429 Modem Pooling 
15
nSet Time Command
When you change the system time via the set time
 command, all scheduled 
ACs are examined. If the time change causes an active AC to be outside its 
scheduled period, the AC is dropped. If the time change causes an inactive 
AC to be within its scheduled period, the switch attempts to establish the 
AC.
If any AC (scheduled or continuous) is in retry mode and the system time 
changes, the switch attempts to establish the AC.
nSystem Measurements
Access endpoints are not measured. All other trunks in an AC are measured 
as usual.
Modem Pooling
Modem Pooling allows switched connections between digital-data endpoints (data 
modules) and analog-data endpoints via pods of acoustic-coupled modems. The 
analog-data endpoint is either a trunk or a line circuit.
Data transmission between a digital data endpoint and an analog endpoint requires 
conversion via a modem, because the DCP format used by the data module is not 
compatible with the modulated signals of an analog modem. A modem translates 
DCP format into modulated signals and vice versa.
Modem Pooling feature provides pools of integrated-conversion modems and 
combined-conversion modems.
Integrated-conversion modem pools have functionality integrated on the Pooled 
Modem circuit pack, providing two modems. Each one emulates a TDM cabled to 
a 212 modem. Integrated are modem pools not available in countries that use 
A-law companding.
Combined-conversion modem pools are TDMs cabled to any TDM-compatible 
modem. Combined-conversion modem pools can be used with all systems.
The system can detect the needs for a modem. Data calls from an analog-data 
endpoint require that the user indicate the need for a modem, because the system 
considers such calls to be voice calls. Users indicate this need by dialing the 
data-origination access code field on the Feature Access Code screen before 
dialing the digital-data endpoint.
The system provides a Hold Time parameter to specify the maximum time any 
modem can be held but not used (while a data call is in queue). 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
430 Modem Pooling 
15
Administering Modem Pooling
For Integrated modem poolings:
1. On the Modem Pool Group screen, administer all fields. Refer to ‘‘
Modem 
Pool Group’’ on page 829 for more information.
2. On the Feature Access Code screen, administer the Data Origination 
Access Code field. Refer to ‘‘
Feature Access Code’’ on page 633 for more 
information.
3. On the Data Module screen, administer all fields. Refer to ‘‘
Data modules’’ 
on page 572 for more information.
For Combined modem poolings:
1. On the Modem Pool Group screen, administer all fields. Refer to ‘‘
Modem 
Pool Group’’ on page 829 for more information.
2. On the Feature Access Code screen, administer the Data Origination 
Access Code field. Refer to ‘‘
Feature Access Code’’ on page 633 for more 
information.
Considerations
nOn data calls between a data module and an analog-data endpoint, 
Return-to-Voice releases the modem and returns it to the pool. The 
telephone user connects to the analog-data endpoint.
nFor traffic purposes, the system accumulates data on modem-pooling calls 
separate from voice calls. Measurements on the pools also accumulate.
nModem Pooling is not restricted. Queuing for modems is not provided, 
although calls queued on a hunt group retain reserved modems. 
nAvoid mixing modems from different vendors within a combined pool 
because such modems may differ in transmission characteristics. 
nEach data call that uses Modem Pooling uses four time slots (not just two). 
As a result, heavy usage of Modem Pooling could affect TDM 
bus-blocking characteristics.
nTandem switches do not insert a pooled modem. The originating and 
terminating switches insert a pooled modem. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
431 PC Interface 
15
Interactions
nCall Detail Recording
Data call CDR records the use of modem pools on trunk calls.
nData Call Setup
Data calls to or from a TDM cannot use Modem Pooling.
nData Privacy and Data Restriction
The insertion of a modem pool does not turn off Data Privacy or Data 
Restriction.
nData-Only Off-Premises Extensions
Calls to or from a Data-Only Off-Premises Extension cannot use Modem 
Pooling, when this type of digital-data endpoint uses a TDM.
nDMI Trunks
If you place a data call from a local analog-data endpoint to a DMI trunk, 
you must dial the data-origination access code to obtain a modem. Data 
calls on DMI trunks to local analog-data endpoints automatically obtain 
modems.
nDS1 Tie Trunk Service
Connect modems used for Modem Pooling to AVD DS1 tie trunks via Data 
Terminal Dialing or by dialing the feature-access code for data origination.
PC Interface
The personal computer (PC) Interface consists of the PC/PBX platforms and 
PC/ISDN Platform product family. These products are used with DEFINITY ECS 
to provide users of IBM-compatible PCs fully-integrated voice and data 
workstation capabilities.
Two groups of different configurations are available for PC Interface: group 1 
uses Digital Communications Protocol (DCP) and group 2 uses the ISDN-BRI 
(Basic Rate Interface) protocol.
The group 1 configurations consist of DCP configurations that use a DCP 
expansion card) 
in the PC to link to the switch. Group 1 (shown in Figure 12) uses 
the following connections:
nThe PC Interface card plugs into an expansion slot on the PC. The card has 
2 standard 8-pin modular jacks (line and phone).
nThe digital phone plugs into the phone jack on the PC Interface card. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
432 PC Interface 
15
nThe line jack on the card provides a digital port connection to DEFINITY 
ECS.
nThe distance between the PC Interface card and the PBX should be no 
more than 1524m for 24-gauge wire or 1219m for 26-gauge wire.
Figure 12. DCP PC interface configuration (Group 1)
The group 2 configurations link to the switch using a PC/ISDN Interface card 
installed in the PC. This group can include a stand-alone PC terminal, or up to 4 
telephones, handsets, or headsets. Group 2 (shown in Figure 13
) uses PC/ISDN 
Interface cards (up to four cards) which plug into expansion slots on the PC. 
These cards each provide 2 standard 8-pin modular-jack connections for both line 
connections (to the switch) and phone connections. A standard 4-pin modular jack 
is also available for use with a handset or headset.
Figure Notes
1. IBM-compatible PC with DCP 
Interface card 
2. IBM-compatible PC with DCP 
Interface card 
3. DCP4. DCP telephone
5. DEFINITY ECS (Digital Line, 
Digital Line (16-DCP-2-Wire), or 
Digital Line (24-DCP-2-wire) 
circuit pack)
6. Host 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
433 PC Interface 
15
Figure 13. ISDN—BRI PC interface configuration (Group 2)
PC Interface users have multiple appearances (depending on the software 
application used) for their assigned extension. Designate one or more of these 
appearances for use with data calls. With the ISDN-BRI version, you can use up 
to 4 separate PC/ISDN Interface cards on the same PC. Assign each card a 
separate extension, and assign each extension one or more appearances. The 
availability of specific features depends on the COS of the extension and the COS 
for the switch. Modem Pooling is provided to ensure general availability of off-net 
data-calling services.
Figure Notes
1. ISDN telephone
2. PC with application
3. Handset or Headset
4. BRI Interface card
5. 2B + D
6. ISDN Line (12-BRI-S-NT) circuit pack)7. DEFINITY ECS
8. PRI trunks
9. BRI stations
10. Interworking
11. DMI
12. Switch features 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
434 PC Interface 
15
Security
There are two areas where unauthorized use may occur with this feature: 
unauthorized local use and remote access.
!SECURITY ALERT:
Unauthorized local use involves unauthorized users who attempt to make 
calls from a PC. The PC software has a security setting so users can place 
the PC in Security Mode when it is unattended. You also can assign 
Automatic Security so that the administration program on the PC is always 
active and runs in Security Mode. This mode is password-protected.
!SECURITY ALERT:
Remote access involves remote access to the PC over a data extension. 
Remote users can delete or copy PC files with this feature. You can 
password-protect this feature. Refer to the BCS Products Security Handbook 
for additional steps to secure your system and to find out about obtaining 
information regularly about security developments.
Administering a PC interface
1. On the Station screen, set the Type field to 
pc.
Considerations
nUse the Function Key Module of the 7405D with PC Interface.
nBRI terminals normally are initializing terminals and require you to assign 
an SPID. The PC/ISDN Platform (Group 2), in a stand-alone configuration, 
is a non-initializing BRI terminal and does not require you to assign a 
SPID.
— Set a locally-defined terminal type with General Terminal 
Administration
— Define the terminal type as a non-initializing terminal that does not 
support Management Information Messages (MIM).
— Assign the PC/ISDN Platform with an associated (initializing) 
ISDN-BRI telephone (such as an ISDN 7505) using a SPID.
— Assign the station (using a locally-defined terminal type) to take full 
advantage of the capabilities of the PC Interface. This terminal type 
is also non-initializing with no support of MIMs. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
435 Wideband Switching 
15
nDo not use telephones with data modules with the PC Interface. (You can 
still use 3270 Data Modules if you also use 3270 emulation). If you attach a 
DCP data module or ISDN data module to a telephone that is connected to 
a PC Interface card, the data module is bypassed (not used). All the 
interface functions are performed by the interface card even if a data 
module is present.
nThe 7404D telephone with messaging cartridge cannot be used with PC 
Interface. However, the 7404D with PC cartridge can be used, but only 
with Group 1 configurations.
Wideband Switching
Wideband Switching provides the ability to dedicate 2 or more ISDN-PRI 
B-channels or DS0 endpoints for applications that require large bandwidth. It 
provides high-speed end-to-end communication between endpoints where 
dedicated facilities are not economic or appropriate. ISDN-BRI trunks do not 
support wideband switching.
Wideband Switching supports:
nHigh-speed video conferencing
nWAN disaster recovery
nScheduled batch processing (for example, nightly file transfers)
nLAN interconnections and imaging
nOther applications involving high-speed data transmission, video 
transmission, or high bandwidth
Detailed description
ISDN-PRI divides a T1 or E1 trunk into 24 (32 for E1) channels, where one 
channel is used for signaling, and all others for standard narrowband 
communication. Certain applications, like video conferencing, require greater 
bandwidth. You can combine several narrowband channels into one wideband 
channel to accommodate the extra bandwidth requirement. DEFINITY ECS 
serves as a gateway to many types of high-bandwidth traffic. In addition, DS1 
Converter circuit packs are used for wideband switching at DS1 remote EPN 
locations. They are compatible with both a 24-channel T1 and 32-channel E1 
facility (transmission equipment). They support circuit-switched wideband 
connections (NxDS0) and a 192 Kbps packet channel. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
436 Wideband Switching 
15
The following table provides information on Wideband Switching channel types.
Channel allocation
For standard narrowband communication, ISDN-PRI divides a T1 or E1 trunk as 
follows:
nT1 trunks are divided into 23 information channels are 1 signaling channel
nE1 trunks are divided into 30 information channels, 1 signaling channel, 
and 1 framing channel
Certain applications, like video conferencing, require greater bandwidth. You can 
combine several narrowband channels into one wideband channel to 
accommodate the extra bandwidth requirement. DEFINITY ECS serves as a 
gateway to many types of high-bandwidth traffic. In addition, DS1 converters are 
used for wideband switching at remote locations.
Performed using one of the three allocation algorithms: fixed, flexible, or floating.
nFixed allocation — Provides contiguous-channel aggregation. The starting 
channel is constrained to a predetermined starting point. (Used only for H0, 
H11, and H12 calls.)
nFlexible allocation — Allows a wideband call to occupy non-contiguous 
positions within a single T1 or E1 facility (NxDS0).
nFloating allocation — Enforces contiguous-channel aggregation. The 
starting channel is not constrained to a predetermined starting point 
(NxDS0).
Channel Type Number of Channels (DSOs) Data Rate
H0 (T1 or E1) 6 (grouped 4 (T1) or 5 (E1) quadrants 
of 6 B-channels each)384 Kbps
H11 (T1 or E1) 24 (on T1 - all 24 B-channels, with 
the D-channel not used; on E1 - 
B-channels 1 to 15, and 17 to 25, and 
B-channels 26 to 31 unused)1536 Kbps
H12 (E1 only) 30 (B-channels 1 to 15 and 17 to 31) 1920 Kbps
NxDS0 (T1) 2-24 128–1536 Kbps
NxDS0 (E1) 2-31 128–1984 Kbps