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 
1377 Intercom 
20
Interactions
nDistributed Communications System (DCS)
If the DEFINITY ECS has both DCS and ISDN displays, the ICLID 
information displays in DCS formats.
Intercom
If you have users who call each other frequently, you can help them communicate 
more quickly. With the intercom feature, you can allow one user to call another 
user in a predefined group just by pressing a couple...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1378 Intercom 
20
Phones
nYou can assign any type of phone to an intercom group. However, only 
multiappearance phones can make and receive intercom calls. Single-line 
phones can only receive intercom calls. Multiappearance phones must have 
at least one open or available call appearance to receive intercom calls.
nPhones receiving an intercom call make a unique alerting sound. If the 
phone...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1379 Internal Automatic Answer 
20
Internal Automatic Answer
Internal Automatic Answer (IAA) provides convenient hands-free answering of 
internal calls to users on multifunction stations with a speakerphone or a 
headphone. 
Detailed description
An eligible call can be answered automatically via IAA if the user activates IAA 
at the answering telephone and the user is able to accept an...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1380 Internal Automatic Answer 
20
IAA Feature Operations
With IAA, you can assign a single programmable feature button (IAA) to 
telephones. When the user presses the IAA feature button, the button lamp lights 
and the system activates IAA. Pressing the same button again deactivates IAA and 
turns off the status lamp. (Pressing the feature button has no effect on a 
currently-active call or...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1381 Internal Automatic Answer 
20
nBridged Call Appearance — Multiappearance Telephone
Calls terminating on a bridged call appearance are not eligible for IAA at 
the bridged station, even if the bridged station has IAA active. (IAA can be 
used by the principal station to answer the call.)
nBridged Call Appearance — Single-Line Telephone
Calls terminating to a bridged call appearance are...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1382 Internal Automatic Answer 
20
nConference
Internal conference calls can be answered automatically via IAA. If more 
than one party has joined a conference call through automatic answer, the 
parties remain connected until they disconnect or the controlling party 
drops the call.
nData Call Setup
Data calls are not eligible for IAA.
nDirect Department Calling and Uniform Call...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1383 IP trunk service 
20
IP trunk service
DEFINITY ECS allows you to route voice and real time fax calls over Internet 
Protocol (IP) networks such as private intranets, reducing long-distance charges 
and giving you added flexibility in routing traffic between sites. Both the origin 
and destination switches must have the DEFINITY Internet Protocol Trunk 
(DEFINITY ECS) application or...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1384 IP trunk service 
20
Restricting access
When DEFINITY IP Trunk application is installed and configured, it can receive 
calls from any IP address. You can restrict access to your site using Access 
Control on the Dial/Routing Plan property page of Configuration Manager. This 
allows you to specify the IP addresses (either specific or subnet) that can access 
your system through the...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1385 IP trunk service 
20
Possible sites for originating a call to Terminating Site-1 are labeled O1 (for 
Originating Site-1), O2, and so on. A call can terminate on a telephone connected 
to the switch at T1, or it can be routed “off-premise” to terminating sites T2, T3, 
or T4. Since the IP calls received at Terminating Site-1 are dialed the same way as 
conventional calls, even if no...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1386 IP trunk service 
20
Now consider an example where off-premise dialing is configured. When O1 calls 
T2 over the IP network (via the T1 switch), the user at O1 dials the exchange of 
T2, not T1. Therefore, O1 has to be administered to route the call through T1, and 
T1 has to change the digit string to route the call to T2. Similarly, let’s say O3 
calls T4 via the T1 switch. The caller...