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
Managing data calls 
417 PC Interface 
15
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...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
418 PC Interface 
15
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...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
419 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...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
420 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...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
421 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...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
422 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,...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
423 Wideband Switching 
15
Typical uses
A typical video application uses an ISDN-PRI interface to DS0 1 through 6 of the 
line-side facility. Refer to Figure 14
.
Figure Notes
Figure 14. Wideband Switching Video Application
1. Video application
2. Port 1
3. Port 2
4. ISDN terminal adaptor
5. Line-side ISDN-PRI
6. DEFINITY ECS
7. ISDN trunk8. Network
9. DS0 24 D-channel
10. DS0 23 unused
11.DS0 1–6...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
424 Wideband Switching 
15
Endpoint applications
An endpoint application is the origination or destination of a wideband call. 
Endpoint application can be any number of data applications based on the 
customer’s particular needs.
ISDN-PRI terminal adapters
For wideband switching with non-ISDN-PRI equipment, you can use an 
ISDN-PRI terminal adapter. ISDN-PRI terminal adapters translate standard ISDN...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
425 Wideband Switching 
15
Non-signaling configuration
Wideband also can support configurations using non-signaling (non-ISDN-PRI) 
line-side T1 or E1 connections. The endpoints are the same as those defined for 
configurations with signaling.
Data service unit/channel service unit
This unit simply passes the call to the endpoint application. Unlike terminal 
adapters, the DSU/CSU does not have signaling...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
426 Wideband Switching 
15
Guidelines and examples
This section examines wideband and its components in relation to the following 
specific customer usage scenarios:
nData backup connection
nScheduled batch processing
nPrimary data connectivity
nNetworking
Data backup connection
Using wideband for data transmission backup provides customers with alternate 
transmission paths for critical data in the event...