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
Features and technical reference 
1397 ISDN service 
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As an example of how ISDN is used in private- and public-network 
configurations , see the following figures. For example, ISDN can be used to 
connect a switch to a public-switched network, to other switches, and to 
computers:
AT&T Switched Network Protocol
DEFINITY ECS supports the AT&T Switched Network Protocol described in the 
TR41449 (for 4ESS to common carrier)...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1398 ISDN service 
20
access to several features. For a description of the services accessible via ISDN 
(either via dedicated or call-by-call trunk groups), refer to ‘‘
Call-by-Call Service 
Selection’’ on page 1295.
Call Identification Display
ISDN Call Identification Display provides a transparent name and number display 
for all display-equipped telephones within an ISDN network. The...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1399 ISDN service 
20
Private network services 
In addition to providing access to switched-public networks, ISDN provides 
private-network services by connecting DEFINITY ECS in an Electronic Tandem 
Network (ETN), Distributed Communications System (DCS), or QSIG Network. 
This gives you more efficient private networks that support new integrated voice 
and data services. ETN, DCS, and QSIG...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1400 ISDN service 
20
Automatic Alternate Routing (AAR) and Automatic Route Selection (ARS) are 
used with ISDN and DS1 trunking facilities to access ETN facilities. AAR and 
ARS are used to collect the dialing information for the call that is originated from 
the main switch.
DCS services
ISDN-PRI facilities can be used in a DCS arrangement whenever tie trunks are 
used to connect the DCS...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1401 ISDN service 
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National ISDN-2 Services
DEFINITY ECS supports National ISDN-2 (NI-2), which offers many of the 
same services as the AT&T Switched Network protocol. The NI-2 protocol is used 
when the DS1 circuit pack is administered for Country Code 1, Protocol 
Version b. 
NI-2 provides users with the following services:
nCalling Line Identification
nNon-Facility Associated Signaling...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1402 ISDN service 
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ISDN interworking 
ISDN interworking allows calls to use a combination of both ISDN and non-ISDN 
trunking and station facilities. A non-ISDN trunking facility is any trunk facility 
supported by the system that does not use the ITU-T recommended Q.931 
message set for signaling. Non-ISDN trunking facilities include facilities such as 
analog trunks, AVD DS1 trunks, and...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1403 ISDN service 
20
Call Identification Display
Two types of identification numbers are provided with ISDN and may be used in 
the various types of displays used with ISDN. The two types of identification 
numbers are as follows:
nCalling Party Number (CPN): A 0–15 digit DDD number associated with a 
specific station. When a system user makes a call that uses ISDN, that 
user’s CPN is...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1404 ISDN service 
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calls incoming to a DEFINITY ECS. The 0–15 digit number of the party 
who answers the call is provided to the ISDN network only if the incoming 
ISDN trunk group is administered to send connected number to the 
network and ISDN public-unknown numbering or ISDN private numbering 
forms are administered to create a CPN.
NOTE:
The connected party may be the party actually...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1405 ISDN service 
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— Connected Party Display
The connected party is the party who answers the redirected call. 
a= CALLING ID    to    CALLED ID          R
The R indicates the reason for redirection. The CALLING ID and the 
CALLED ID may be the name or the number, depending on the 
information received from the far end.
Displays for conference calls
Both terminal and attendant conference...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1406 ISDN service 
20
Malicious Call Trace (MCT)
ISDN calling number identification is sent when MCT notification is activated on 
an ISDN trunk. 
Multiple Subscriber Number (MSN) - Limited
The ISDN standard MSN feature lets you assign multiple extensions to a single 
BRI endpoint. A side effect of supporting the NT interface is the MSN feature 
works with BRI endpoints allowing the Channel...