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 
407 Data Modules — general 
15
CALLMASTER phones that have a connection to a data terminal or personal 
computer. The data modules integrate data and voice into the DCP protocol 
required to interface with the switch via a port on a digital-line circuit pack. Use 
the 7400B+ or 8400B+ instead of an MPDM when you need asynchronous 
operation at speeds up to 19.2-kbps to provide a DCP interface to the...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
408 Administered Connection 
15
Asynchronous Data Module 
NOTE:
The alias station command cannot be used to alias data modules.
Use the Asynchronous Data Module (ADM) with asynchronous DTEs as a data 
stand for the 7500 and 8500 Series of ISDN-BRI phones, thus providing 
connection to the ISDN network. The ADM provides integrated voice and data on 
the same phone and supports data rates of 300, 1200,...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
409 Administered Connection 
15
through tie trunks (ISDN, DS1, or analog tie trunks) and intermediate switches. If 
required, route the connection via Automatic Route Selection (ARS) and 
Generalized Route Selection (GRS) through the public network. The call routes 
over associated ISDN trunks. When the far-end answers, a connection occurs 
between the far-end and the near-end extension in the 
Originator...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
410 Administered Connection 
15
nA local data endpoint connecting to a local or remote data endpoint such as 
a connection between two 3270 data modules.
NOTE:
The following guidelines do not include AAR and ARS, or GRS 
administration information for routing AC calls over trunk groups. 
Refer to the respective feature elsewhere in this book for that 
information.
Establishing Administered Connections
The...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
411 Administered Connection 
15
As long as an AC is due to be active, the originating switch continues to establish 
an AC unless the attempt fails because of an administrative error (for example, a 
wrong number) or service-blocking condition (for example, outgoing calls 
barred).
nThe frequency with which failed attempts are retried is determined by the 
administered retry interval (1 to 60 minutes) for...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
412 Administered Connection 
15
Administered Connections failure: Auto
Restoration and Fast Retry
When an active AC drops prematurely, you must invoke either auto restoration or 
fast retry to determine whether auto restoration is attempted for an active AC.
If you option AC for auto restoration and the connection was routed over SDDN 
trunks, auto restoration is attempted. During restoration, connections...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
413 Administered Connection 
15
2. On the DS1 Circuit Pack screen, administer all fields. Refer to ‘‘DS1 
Circuit Pack’’ on page 599 for more information. (Use with switch node 
carriers.)
3. On the Access Endpoint screen, administer all fields. Refer to ‘‘
Access 
Endpoint’’ on page 467 for more information.
4. Choose one of the following trunk groups and administer all fields. Refer to 
‘‘
ISDN trunk...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
414 Administered Connection 
15
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...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
415 Modem Pooling 
15
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...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
416 Modem Pooling 
15
For Combined modem poolings:
1. On the Modem Pool Group screen, administer all fields. Refer to ‘‘
Modem 
Pool Group’’ on page 817 for more information.
2. On the Feature Access Code screen, administer the Data Origination 
Access Code field. Refer to ‘‘
Feature Access Code’’ on page 619 for more 
information.
Considerations
nOn data calls between a data module and an analog-data...