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
Features and technical reference 
1387 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 of buttons. You can even 
administer a button that always calls a predefined extension when pressed.
Brief description
You control which phones can make intercom calls to each other by putting them 
in groups called “intercom groups.” Once a set of phones have been added to the 
group, you allow users to make intercom calls by administering one or both of the 
following feature buttons on their phones:
Phones with one or both of these features can belong to the same group.
Intercom groups
nYou can create up to 32 intercom groups on one DEFINITY ECS.
nEach group can have up to 32 extensions in it.
nIt’s OK to assign the same extension to different groups.
nIntercom calls are only possible between extensions in the same group.
nAny group member with a feature button for dial intercom can make an 
intercom call to any other member in the group. Automatic 
IntercomThis button always calls one predefined phone in the 
same intercom group when pressed. You specify the 
destination extension for this button.
Dial Intercom This button allows users in an intercom group to call 
anyone else in the same group. The caller lifts the 
handset, presses the Dial Intercom button, then dials a 1- 
or 2- digit code for the extension they want to reach. 
						

							DEFINITY ECS Release 8.2
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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 has an intercom button with a status lamp, the lamp flashes.
nYou can administer an automatic intercom connection between 2 phones 
even if their classes of restriction don’t allow other calls between them.
Interactions
nBridged Appearances
Bridged appearances can’t receive intercom calls.
nCall Coverage
Intercom calls do not follow a coverage path unless the caller activates Go 
To Cover.
nCall Forwarding
Intercom calls cannot be forwarded off-net.
nCall Pickup/Directed Call Pickup
Intercom calls are not included in the call pickup alerting count.
nData Privacy and Data Restriction
Extensions with either of these features active cannot originate intercom 
calls.
Related topics
Refer to ‘‘
Using phones as intercoms’’ on page 399 to administer intercom 
capabilities on phones.  
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Features and technical reference 
1389 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 incoming call. A 
telephone is unable to accept an incoming call if it is off-hook, is in the process of 
dialing digits, or has a call on hold.
The following internal calls are eligible for IAA, depending on how you 
administer the Internal Auto-Answer of Attd-Extended/Transferred Calls field on 
the Feature-Related System Parameters screen:
nStation-to-station voice calls, with both telephones on the same switch 
(includes redirected intraswitch calls). Set the Internal Auto-Answer of 
Attd-Extended/Transferred Calls field to 
transferred or both.
nInternal call from another switch node in a Distributed Communications 
System (DCS) configuration when the origin of the call is known to be an 
internal, non-attendant telephone on that switch (includes redirected 
inter-DCS calls). Set the Internal Auto-Answer of 
Attd-Extended/Transferred Calls field to 
transferred or both.
nAttendant-extended external calls. Set the Internal Auto-Answer of 
Attd-Extended/Transferred Calls field to 
attd-extended or both.
The following calls are not eligible for IAA:
nCalls from public-network trunks (including personal central office line 
(PCOL))
nCalls from non-DCS tie trunks
nAutomatic Callback calls
nAutomatic Circuit Assurance calls
nData calls
nAttendant-extended external calls if the Internal Auto-Answer for Attd 
Extended/Transferred Calls field is set to 
transferred or none
nCalls that the system redirects because of a queue overflow of Emergency 
Access to the Attendant calls
nCalls when the receiving station’s Active Station Ringing field is set to 
continuous 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Features and technical reference 
1390 Internal Automatic Answer 
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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 a ringing call.) The IAA button may be toggled on or off at 
any time, regardless of the state of the telephone. Using the speakerphone to place 
calls does not affect the state of IAA.
The calling telephone receives a tone when its call is answered automatically by a 
telephone with IAA. The called telephone receives a tone (a ring ping) and then 
goes off-hook when automatically answering an IAA-eligible call. The answering 
telephone’s speaker and microphone are both turned on.
If a user has IAA active and is currently busy on a call or is in the process of 
dialing digits, subsequent incoming calls are treated as if IAA were not activated.
Considerations
nUsers should always deactivate IAA when leaving the work area. 
Otherwise, incoming calls are unintentionally answered by the unattended 
station, and do not go to coverage.
nA 602A terminal is off-hook when the headset or speakerphone is 
connected. Therefore IAA answers a call if all other call appearances are 
idle.
Interactions
nAttendant Console
IAA is not available with Attendant Console.
nAutomatic Answer
You cannot administer both IAA and Automatic Answer simultaneously on 
the same telephone.
nAutomatic Call Distribution
Calls directed to an ACD split are eligible for IAA. 
nAutomatic Callback
Callback calls via Automatic Callback are not answered automatically 
by IAA.
nAutomatic Circuit Assurance
Calls generated by ACA are not eligible for IAA. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Features and technical reference 
1391 Internal Automatic Answer 
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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 not eligible for IAA at 
the bridged station, even if the bridged station has IAA active.
nCall Coverage
If an internal call is redirected to another telephone by Call Coverage 
redirection criteria, then that call is eligible for IAA at the redirected 
telephone.
IAA does not apply to calls to the original called extension when:
— The called telephone has activated Send All Calls
— The calling telephone has selected Go to Cover before placing the 
call
Calls directed to a coverage answering group are not eligible for IAA.
NOTE:
If you set the coverage path for a station to All Calls and that station 
activates IAA, the first coverage point hears a ring, the principal 
station automatically answers, and the coverage-simulated bridge is 
dropped. The coverage station rings, but is not able to answer the call 
because the coverage-simulated bridge has been dropped.
nCall Forwarding
Calls to a station with IAA and Call Forwarding active are forwarded and 
are not answered by the station dialed.
NOTE:
If the forwarded-to station is internal and has IAA active, it 
automatically answers the redirected call.
nCall Park
If you are using Deluxe Paging and Call Park times out, the call returns to 
the originating station that parked the call and is eligible for IAA.
nCall Pickup
Internal calls to a telephone in a Call Pickup group are eligible for IAA. If 
the called extension in a Call Pickup group has IAA-active, the call is 
automatically answered. A telephone with IAA active is not able to 
automatically answer calls to other telephones in its Call Pickup group. 
						

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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 Distribution
Internal calls to a DDC or UCD group member are eligible for IAA.
nDistributed Communications System
If a call is from an internal telephone on another switch in a DCS 
configuration, then that call is considered internal and is eligible for 
automatic answer.
nDo Not Disturb
Do Not Disturb preempts IAA at the called telephone.
nGo to Cover
IAA does not apply to calls to the original called extension when the 
calling telephone has selected Go to Cover before placing a call.
nISDN-BRI
IAA is not available with ISDN-BRI terminals.
nLoudspeaker Paging — Deluxe Paging
When you are using Deluxe Paging and Call Park times out, the call returns 
to the originating station that parked the call and is eligible for IAA.
nRingback Queuing
Automatic calls generated by Ringback Queuing are not eligible for IAA.
nSend All Calls
IAA does not apply to calls to extensions with Send All Calls is active.
nTerminating Extension Group
Calls to a Terminating Extension Group extension are not eligible for IAA. 
However, calls placed to an individual extension are eligible. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Features and technical reference 
1393 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 Lucent’s Internet Telephony Server-Enterprise 
(ITS-E) Release 1.2. DEFINITY IP Trunk application consists of the following 
components:
nThe DEFINITY IP Trunk software, which routes telephone calls and faxes 
over your company’s intranet
nConfiguration Manager software, which lets you administer the operation 
and performance of DEFINITY ECS service 
Both the IP trunk software and Configuration Manager reside on the Windows NT 
server on the IP Trunk circuit pack.
For information about Internet Telephony Server-Enterprise, contact your Lucent 
representative.
Brief description
DEFINITY IP Trunk application can be administered to provide service that 
emulates T1 and E1 digital service. Your users dial phone numbers exactly as they 
would for calls routed over conventional trunk groups, including the use of the 
Automatic Route Selection (ARS) feature access code (normally 9 in the U.S.).
Here’s how DEFINITY ECS and the DEFINITY IP Trunk application process a 
call:
Caller Goes off hook and dials a number.
Origin switch Collects digits, consults the routing table, and sends the 
dialed digits to the IP trunk application.
Origin IP 
trunk 
applicationDetects the incoming call and receives the digits sent by the 
origin switch. Performs any local digit translations, 
determines the IP address of the destination IP trunk server 
and sends the call over the IP trunk group to that IP address. 
						

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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 IP Trunk application. This restriction on 
access can be enabled for other DEFINITY ECS systems (gateways) and 
NetMeeting™ PCs (clients).
The DEFINITY IP Trunk application can also block outgoing calls based on the 
analysis of the number dialed. For example, you can use Originating Routing Info 
on the Dial/Routing Plan property page of Configuration Manager to block all 
phone numbers that start with 1-900.
Reducing long-distance costs with off-premise 
dialing
Normally, only calls going to a switch with a DEFINITY IP Trunk application are 
routed over IP networks. However, DEFINITY ECS supports off-premise dialing. 
Calls not intended for a remote switch can be routed over the IP network to that 
switch, which then routes the calls over the public telephone network to the final 
destination. This helps you significantly reduce long-distance costs.
For example, suppose there is a DEFINITY ECS with the DEFINITY IP Trunk 
application in Tokyo and another one in New York. A user can make a call to New 
Jersey from Tokyo by sending the call from Tokyo to New York over the IP 
network. The New York switch sends the call over the public telephone network 
to New Jersey, greatly reducing the long-distance expense.
If you want users to dial the same telephone numbers for off-premise dialing as 
for direct dialing, you have to administer the origin and destination switches to 
manipulate the digit string. For example, the following chart illustrates different 
possible originating and terminating locations for calls to a DEFINITY IP Trunk 
application site, labeled as Terminating Site-1. Destination IP 
trunk 
applicationReceives a connection indication and the digits sent by the 
origin IP trunk application. Performs any local digit 
translations and delivers the call to the destination switch.
Destination 
switchDetects the incoming call and receives digits. Rings the 
phone associated with that number.
Called party Answers the call. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
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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 off-premise dialing is configured, the telephone 
number received will differ depending on where the call originated:
nCalls from Originating Site-O1 (which is within the same area code as T1) 
contain only exchange and extension portions. 
nCalls from O2 (which is within the same country, but in a different area 
code than T1) contain a long distance access code and an area code, as well 
as an exchange and an extension.
nCalls from O3 contain an international access code, a country code, an area 
code, an exchange and an extension.
In all three cases, the DEFINITY IP Trunk application at Terminating Site-1 
changes the digits in the telephone number received to match what the switch 
expects to receive for a call to one of its extensions. 
						

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Administrator’s Guide  555-233-506  Issue 1.1
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Features and technical reference 
1396 IP trunk service 
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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 dials the local international access code and 
the country code for T4. The DEFINITY IP Trunk application at T1 converts O3’s 
international access code to the code appropriate for its own location, and 
preserves the country code for T-4.
!CAUTION:
Lucent recommends that you avoid more than 3 consecutive analog voice to 
data packet conversions on voice calls. Repeated compression and 
decompression of a voice call may seriously degrade sound quality. 
Examples of conversions are: routing a voice (analog) call over a TCP/IP 
format such as an IP or ATM trunk, recording a voice call into an Intuity 
AUDIX, or playing back a voice call from an Intuity AUDIX. 
You can configure DEFINITY ECS and the DEFINITY IP Trunk application to 
allow off-premise dialing to some destinations but not to others. For example, you 
can administer a remote switch to allow off-premise dialing to any exchange in its 
own area code but not to any other area code. Refer to DEFINITY ECS 
Administration for Network Connectivity for more information about planning and 
administering call routing on IP trunks. 
You can allow users to dial off-premise numbers directly as described above. You 
can also use indirect, or two-stage, dialing. Two-stage dialing requires users to 
dial 2 phone numbers and a security code, as opposed to dialing the off-premise 
(at the remote site) number exactly as they would without DEFINITY ECS. 
Two-stage dialing is more difficult and requires users to learn a new dialing 
procedure, but it is somewhat more secure.
!SECURITY ALERT:
All off-premise dialing at the remote site, regardless of which method is 
used, has the potential for toll fraud. Refer to the BCS Products Security 
Handbook and to ‘‘
Enhancing system security’’ in this manual.
Rerouting calls when IP transmission quality is 
poor
With Configuration Manager, you can administer the DEFINITY IP Trunk 
application to monitor packet loss and transmission time on an IP trunk group and 
compare network performance with preset criteria for both measurements. If 
either packet loss or transmission time exceeds the criteria you’ve set, the IP trunk 
application blocks access to the trunk group until transmission quality improves.