Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide

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mm-multinbr button or FAC. After the new party begins alerting, the 
controller may hit CONFERENCE to add the party to the existing 
conference on hold.
Coverage. Multimedia calls to a Basic mode complex are subject to the same 
coverage criteria as voice calls and follow the coverage path administered for the 
voice station of the Basic multimedia mode complex.
If a plain voice station or a Basic mode complex is the covering party, the 
answering voice station will receive audio only. If all voice stations in the 
coverage path have the station form Early Answer field set to n and the originator 
of the multimedia call was not a local Enhanced mode complex, the answering 
station will hear hourglass tone.
If an Enhanced mode complex is the covering party, the answering voice station 
will receive voice and video. If all voice stations in the coverage path have the 
station form Early Answer field set to n and the originator of the multimedia call 
was not a local Enhanced mode complex, the answering station will hear 
hourglass tone.
Coverage: Multimedia calls and off-net call coverage. If the principal station’s 
coverage path include a remote coverage point, the multimedia call will cover 
off-switch as voice only. If the call is unanswered off-switch and proceeds to the 
next coverage point on-switch, the multimedia nature of the call is preserved. 
Coverage: Multimedia calls and coverage to voice mail. Voice mail systems 
such as AUDIX are typically the last point in a coverage path and are usually 
implemented as a hunt group. In order to guarantee that the originator of an H.320 
multimedia call hears the voice mail greeting, the hunt group that defines the list 
of voice mail ports should have the Early Answer field on the hunt group set to y. 
This field will have no effect on voice calls to the voice mail system.
Call Detail Recording. Each channel of a 2-channel call generates a separate 
CDR record.
Data Collaboration
Once you have established a multi-point video conference, multi-point T.120 data 
collaboration may be enabled for that call. This will allow all video parties on the 
current conference to collaborate.
T.120 Data conferencing is made possible through the Expansion Services 
Module (ESM) which is an adjunct to the DEFINITY ECS. Up to six parties may 
participate in a single data conference, and up to 24 parties may use ESM facilities 
for data collaboration at any given time.  
						

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Adding data sharing to a video conference
1. Set up a multimedia conference. 
2. Once a multimedia call is active, any voice station in the conference, can 
initiate data collaboration by pressing the mm-datacnf button. Or, to use the 
feature access code to initiate a data conference, press the Transfer button. 
A second line-appearance becomes active and you hear dial tone. Dial the 
multimedia data conference feature access code. Confirmation tone is 
heard and the system automatically reselects the held call appearance of the 
multimedia conference. The DEFINITY ECS will select a data rate which 
is acceptable to all H.320 DVC systems in the current call.
If the system does not have sufficient ESM resources available for all 
parties currently in the call, activation of T.120 data sharing will be denied. 
The mm-datacnf status lamp will flash denial or the mm-datacnf FAC will 
produce reorder.
3. Each H.320 DVC system in the conference call is joined to the data 
conference. On many DVC systems, the provided GUI may prompt the 
user with a dialog box, requesting the user to select a specific conference to 
join. With DEFINITY MMCH, there should only be one conference 
available to select.
4.The user must now use the PC’s GUI to begin application sharing. The 
method for beginning application sharing or file transfer is different for 
each H.320 multimedia application. One of the H.320 DVC systems 
activates data sharing from the H.320 DVC vendor provided GUI. See your 
H.320 DVC system documentation for details.
5. The same H.320 DVC system as in step 4, opens an application, 
whiteboard, etc. to share and the image of the application is displayed on 
all H.320 DVC systems in the conference.
For details on how multiple users may control the shared application, see 
the vendor provided documentation for your specific H.320 DVC system.
6. To end the data collaboration session and retain the voice/video conference, 
the station that selected the mm-datacnf button or FAC may press the 
mm-datacnf button or hit transfer and dial the mm-datacnf deactivation 
FAC .  
NOTE:
As of this writing, many endpoints do not respond correctly to ending 
the data collaboration session and retaining voice/video. Some H.320 
DVC systems drop the entire call. It is recommended that once T.120 
data sharing has been enabled for a conference, that it remain active 
for the duration of the conference call. When all endpoints have 
dropped from the call, the T.120 resources will be released. 
						

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Joining a multimedia conference after T.120 data sharing has been enabled. 
If a multimedia conference with T.120 data sharing is already active and it is 
desired to conference in a new video endpoint, the new video endpoint can be 
conferenced into the existing call. The new endpoint will be allowed into the data 
conference if there exists sufficient ESM resources for the new endpoint. The new 
endpoint will get voice/video and data sharing if the new endpoint supports the 
MLP data rate chosen by the system when T.120 data collaboration was activated. 
If the endpoint does not support the pre-existing MLP data rate, the new endpoint 
will only receive voice and video.
Single switch data collaboration.  When all parties involved in data 
collaboration conference are located on the same physical DEFINITY ECS, there 
is no restriction on the type of user. The parties may be any combination of 
Enhanced multimedia complexes, Basic multimedia complexes or stand-alone 
H.320 DVC systems.
Multi- switch data collaboration.  When all parties involved in data 
collaboration conference are 
not located on the same physical DEFINITY ECS, 
the parties located on the DEFINITY ECS hosting the data conference (i.e. the 
switch that activated mm-datacnf) may be any combination of Enhanced 
multimedia complexes, Basic multimedia complexes or stand-alone H.320 DVC 
systems. 
All parties on remote switches must not be Enhanced multimedia 
complexes:
 they must be Basic multimedia complexes or stand-alone H.320 
DVC systems. Prior to originating or receiving a multimedia mode call, the 
mm-basic feature button or feature access code can be used to dynamically change 
an Enhanced mode complex into a Basic mode complex and back again.
Forwarding of voice/multimedia calls. In Basic mode you can forward calls 
from either the telephone or the multimedia endpoint. To forward a call from the 
multimedia endpoint:
1.At the PC’s multimedia application, enter the call-forwarding feature 
access code (FAC) 
2. Enter the forward-to number in the dialed number field on the endpoint 
software
3. Click the Dial button (or equivalent) 
NOTE:
The PC multimedia software will probably respond with a message that the 
call failed, since it does not recognize the FAC. In fact, DEFINITY ECS 
does receive the message, and forwards all multimedia calls addressed to the 
1-number. 
						

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If a call is forwarded from the telephone, the call converts to voice first. If using 
the multimedia endpoint to forward, the calls arrive at the forwarded-to extension 
as a data call. Such calls continue to ring until answered or abandoned, rather than 
follow a coverage path. 
Users can forward calls from the multimedia endpoint using the call forward FAC. 
You can also assign a call-forward button at the voice station to forward calls for 
the data endpoint. If a Basic multimedia complex has console permissions, that 
user can forward calls for others by dialing the FAC, the data extension, and then 
the forwarded-to number. 
Call Park. A voice-terminal user can park any active call, voice or multimedia, 
and unpark the call from another telephone. Users cannot park or unpark calls 
using multimedia endpoints. 
Call Pickup. Members of a pickup group can answer an H.320 call using a 
telephone after the call has been converted to voice. This is true for standard or 
directed call pickup. 
Consult. After a call is converted to voice, consult may be used when transferring 
or conferencing the call. 
COR/COS. The Class of Restriction and Class of Service for H.320 calls 
originated from a 1-number complex are the same as those of the telephone in the 
complex.
Data Call Setup. Basic complex multimedia endpoints are BRI data endpoints, 
and may use data call-setup procedures as provided by the software vendor.
Data Hotline. If endpoint software allows users to select the dial function without 
entering a number, the endpoint can be used for hotline dialing.
Dial Access to Attendant. Access to Attendant is blocked for a data call from a 
Basic mode multimedia endpoint.
Data Trunk Groups. Data trunk groups may be used to carry H.320 calls of a 
fixed (administered) bearer capability. 
Hold. The voice station and multimedia endpoint of a Basic complex are each 
independent devices with respect to call control. When a Basic multimedia 
complex voice station executes hold only the voice station is held. If the user has 
conferenced their multimedia endpoint into a multimedia conference, activating 
hold will 
not disconnect the multimedia endpoint from the conference, it will only 
disconnect the Basic multimedia complex voice station. Executing hold with an 
Enhanced mode complex will fully disconnect voice and video from the current 
active call. 
						

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Hunt Groups using Basic Mode complexes. Since Basic mode complexes may 
receive point to point multimedia calls at the DVC system and voice calls to the 
station simultaneously, the voice station extension may be placed in any normal 
voice hunt group or ACD skill and the data extension may be placed in a simple 
hunt group made up of only data extensions.
Basic mode complex data extensions or stand-alone data extensions may be used 
to create simple data hunt groups. Data extensions are not allowed in ACD hunt 
groups. It is recommended that you do not mix voice and data stations in a hunt 
group.
If you want multimedia calls to hunt to multimedia endpoints (i.e. 2B point to 
point data hunting), put the data extension in the hunt group. If you place the voice 
extension in a hunt group, only voice calls hunt to that extension. Multimedia calls 
to a hunt group with a Basic mode voice station as the hunt group member will 
not be offered to the DVC system of the Basic mode complex. If either the voice 
or data extension of a Basic mode complex is busy, the entire complex is 
considered busy for hunting purposes.
In order to guarantee that all members of a voice hunt group or skill can receive 
voice or multimedia calls, all members should have the H.320 field on the station 
form set to “y”. Simple voice stations and Basic complex mode voice stations will 
receive voice only. Enhanced mode stations will receive voice and video.
The MM Early Answer field (on the Hunt Group form) tells the system to answer 
the incoming multimedia call and establish audio before it reaches the first 
member of the hunt group. Thus, when the talk path is established, the caller is 
able to speak with an agent immediately. This is not necessary for hunt groups 
comprised of data extensions.
Hunting, Other considerations. Agents that are part of a Basic mode complex 
may dial a feature access code to remove themselves from availability (and to 
indicate that they are available again) from both the multimedia endpoint and the 
telephone independently. This allows the voice member or the data member to be 
individually made unavailable. To make the data extension unavailable, the agent 
must dial the FAC from the DVC system. 
CMS measurements may indicate unusually slow ASA, because of the time 
required for the system to establish early-answer before offering the call to an 
agent.
Hunting Call association (routing). Typically incoming voice calls consist of 2 
B-channel calls to the same address, to provide greater bandwidth and better video 
resolution. DEFINITY ECS attempts to correctly pair up incoming calls and offer  
						

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them as a unit to a single agent. MMCH uses call association to route both calls to 
the extension that answered the first call, regardless of how the call was routed 
internally.
Two 56K/64K data calls with the same calling party number to the same 
destination number are considered to be associated. The system makes every 
attempt to route both calls of a 2-channel call to the same answering party. If the 
first call terminates at a member of a hunt group, the second call does not have to 
hunt, but goes directly to the same member. In order for 2B multimedia calls to be 
correctly given to a single agent, incoming calls to the hunt group must have ANI 
information. The ANI information may be in the form if ISDN calling party 
number or DCS calling party number. Multimedia calls made on the same switch 
as the hunt group are easily associated. If multimedia calls into a hunt group have 
incorrect ANI information (i.e. all calls from switch X to switch Y include the 
LDN for switch X), then as the volume of calls increases, the number of 
mis-associated calls will increase. If multimedia calls into a hunt group have no 
ANI information, the switch will never associate pairs of calls and all calls will be 
treated independently and routed to separate agents. This is not a recommended 
configuration.
Hunting with Multimedia vectors. Very often, calls are routed to hunt groups or 
skills via a vector. The existing VDNs and vectors which exist for routing voice 
calls can be used to route multimedia calls. 
In order to use a vector for multimedia calls that will terminate to voice stations, 
you must set the Multimedia field on the vector form to 
y. This field has no effect 
on voice calls routing through the vector. This field will cause multimedia calls 
routed through the vector to receive early answer treatment prior to processing the 
vector steps. This provides a talk path to the caller for announcements or 
immediate conversation with an agent. 
NOTE:
Vectors which have the Multimedia field set to y must eventually route to 
hunt groups, skills or numbers which are voice extensions. A vector with the 
multimedia field set to y should never be set up to route to a hunt group or 
number which is a data extension.
When a vector is used to route video (56K/64K) calls to a hunt group comprised 
of data extensions, the vector 
must have the multimedia field set to n.
Intercept Treatment. H.320 calls that receive intercept treatment are treated like 
other data calls. H.320 calls cannot be directed to an attendant for service because 
the attendant cannot have H.320 conversion service. 
						

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ISDN Trunk Groups. Lucent Technologies highly recommends that you use 
ISDN trunks for multimedia calls. ISDN PRI trunks allow complete 1-number 
access for an Enhanced multimedia complex. ANI provided over PRI trunks 
allows correct routing of multiple bearer channels to the correct destination 
device. ISDN also provides the bearer capability on a call by call basis which can 
be used to distinguish voice calls from multimedia calls.
Malicious Call Trace. If a malicious call terminates at a Basic multimedia 
complex endpoint, the user can dial the feature access code from the telephone to 
activate malicious call trace, followed by the extension of the multimedia 
endpoint. If the user does not dial the multimedia extension, MCT traces any call 
held on the telephone.
Message Waiting. Message Waiting indication is handled at the telephone. 
Because H.320 calls are converted to voice before going to coverage, all messages 
are voice only.
Night Service. Incoming Basic mode data calls follow established night-service 
processing for data calls. 
Remote Access. The switch does not prevent Basic multimedia complexes from 
attempting to use remote access. However, these Basic mode endpoints will most 
likely not be able to dial the necessary codes. 
Station Hunting . Basic mode data calls to endpoints that have an extension 
administered in the hunt-to-station field hunt based on established hunting criteria. 
The call is converted to voice before station hunting. 
Tenant Partitioning. Permission to make multimedia calls or add parties of any 
type to a conference is subject to standard tenant-partitioning restrictions. 
Terminating Extension Groups. Basic mode data calls to a TEG are converted to 
voice and can terminate only at a voice endpoint. Effectively, DEFINITY ECS 
treats the multimedia-complex extension as a voice-only endpoint.
Telephone Display. Display information for calls to or from a Basic multimedia 
complex contains the 1-number.
Enhanced Mode MM complex
The Enhanced multimedia complex provides a much greater unified and 
integrated interface for control of voice and multimedia calls. The multifunction 
voice station is used to control all calls, whether voice or multimedia. The H.320 
desktop video system is used to present the video stream, data stream and 
(optionally) audio stream to the user. The H.320 desktop video system is 
not used 
for call control. The Enhanced multimedia complex allows the multifunction  
						

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voice station to handle voice or multimedia calls in an almost identical manner. 
Each call appearance on the voice station may represent a voice or multimedia 
call, allowing multiple voice or multimedia calls to be present simultaneously on 
the station. The user may manage the separate call appearances without regard to 
the voice or multimedia nature of the specific call. The standard 
HOLD/TRANSFER/CONFERENCE/DROP actions may be applied to any call 
without regard to the voice or multimedia nature of the call.
1-number access
1-number access permits originating users to make voice or multimedia calls to an 
Enhanced multimedia complex by dialing the same number for either type of call. 
The number may be the voice station extension or the data module extension. If 
the incoming call is a voice call, DEFINITY ECS alerts the station of an incoming 
voice call. If the incoming call is 56K or 64K data call, DEFINITY ECS 
recognizes it as a multimedia call and inserts resources to terminate the H.320 
protocol and then alerts the voice station with a multimedia call. 
Calls originating on the same switch as the Enhanced mode complex destination 
may always use 1-number access for voice or video. In order to take advantage of 
1-number access for calls originating from a remote location, the incoming calls 
must arrive over ISDN-PRI trunks. If the system is setup with separate non-PRI 
digital facilities for data, multimedia calls must be made to the data extension of 
the Enhanced mode complex.
AVD (Alternate voice/data) trunk groups cannot be used to provide 1-number 
access with MMCH. If the AVD trunk group has a BCC of 0, all calls arriving 
over the AVD trunk to the Basic mode complex will be assumed to be voice calls. 
If the AVD trunk group has a BCC of 1 or 4, all calls arriving over the AVD trunk 
to the Basic mode complex will be assumed to be multimedia calls. 
ORIGINATION
The basic call sequence from an Enhanced mode complex is to originate a 
multimedia call and alert the destination. When the destination answers the call, 
the originating station’s H.320 desktop video system will be alerted (that is, called 
by the switch to establish the service link). If the H.320 desktop video system is 
not configured for auto-answer, the user must answer the H.320 calls via the DVC 
GUI. If the H.320 DVC is configured for auto-answer, no action is needed via the 
DVC GUI.
 It is recommended, but not required, that Enhanced mode 
complexes place their desktop video system into an auto-answer mode of 
operation.
 If the far-end is providing a video signal, the 2-way video will be 
observed. If the destination is not providing a video signal (call was answered by a 
simple voice station), then loopback video will be provided at the Enhanced mode 
complex originator. The audio signal will exist at the handset of the voice station. 
The audio signal may be moved to the H.320 DVC system via activation of a 
mm-pcaudio button on the voice station. See the section below on mm-pcaudio. 
						

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Hourglass tone.  The originating party may hear different things when the 
incoming multimedia call is answered depending on the nature of the answering 
party. If the call is being answered directly by an H.320 DVC system or if the 
answering party is an Enhanced mode complex on a remote switch, an immediate 
audio path will not exist between the two parties. This is because the H.320 
protocol must be established after the call is answered. It takes several seconds for 
the H.320 protocol to establish an audio path. During this interval the originating 
party will hear special ringback. When the audio path exists the special ringback 
will be removed and replaced with a short incoming call tone indicating that audio 
path now exists. The combination of special ringback followed by incoming call 
tone is referred to as “hourglass tone.” Hourglass tone is an indication to the 
originating party that they should wait for the H.320 call to establish audio.
- originating voice calls
Voice calls are originated from the voice station of an Enhanced mode complex in 
the normal manner as for any voice station.
- originating multimedia calls
Multimedia calls from an Enhanced multimedia complex are originated from the 
VOICE STATION, NOT the H.320 desktop video system. All multimedia 
originations require the user to indicate the multimedia nature of the call prior to 
providing any address digits. There are several different ways to originate a 
multimedia call from the voice station.
1.
mm-call (Multimedia Call) button. If the station has an mm-call button 
administered, the user goes off-hook and selects the mm-call button. The 
user may select the mm-call button and then go off-hook. If the user has a 
speakerphone on the station, the user may originate the call simply by 
selecting the mm-call button. The speakerphone will automatically be 
placed off-hook and dialtone will be heard. Upon selection of the mm-call 
button, the mm-call status lamp (green led) will light steadily, indicating a 
multimedia call. 
The user now dials the destination address digits. The destination address 
may be provided by dialing digits, using abbreviated dial entries, last 
number dialed, station busy indicators, etc. Originating a multimedia call 
with the mm-call button will originate a call according to the Default 
Multimedia Parameters selected on the System Parameters Features form. 
This default parameter will be either 2x56 or 2x64. The bearer capability of 
the multimedia calls will either be 56K or 64K and the bandwidth will be 
2B channels. 
For calls with a bandwidth of 2B, use of the mm-call button to originate 
will cause the same destination address to be used for both channels of the 
2B call. See the section below on the mm-multinbr button/FAC for 
information on originating a 2B call where the destination has a different 
address for each B-channel.  
						

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NOTE:
The mm-call feature button is generally used by stations that are part 
of an Enhanced multimedia complex, but may be used by any station 
to originate a multimedia call.
2.
Multimedia Call feature Access Code. For stations that do not have an 
administered mm-call button, the Multimedia call feature access code may 
be used instead. The user goes off-hook on the station, waits for dialtone, 
then dials the MM-call FAC, receives dialtone again and then dials the call 
normally. The destination address may be provided by dialing digits, using 
abbreviated dial entries, last number dialed, station busy indicators, etc. 
Originating a multimedia call with the mm-call button will originate a call 
according to the Default Multimedia Parameters selected on the System 
Parameters Features form. This default parameter will be either 2x56 or 
2x64. The bearer capability of the multimedia calls will either be 56K or 
64K and the bandwidth will be 2B channels. 
For calls with a bandwidth of 2B, use of the mm-call button to originate 
will cause the same destination address to be used for both channels of the 
2B call. See the section below on the mm-multinbr button/FAC for 
information on originating a 2B call where the destination has a different 
address for each B-channel. 
NOTE:
The mm-call feature access code is generally used by stations that are 
part of an Enhanced multimedia complex, but may be used by any 
station to originate a multimedia call.
3.
mm-multinbr (Multimedia Multi-number) button. The mm-multinbr 
button is similar to the mm-call button. It allows origination of a 
multimedia call from a voice station. It is used when the destination being 
dialed requires a different address for each of the 2 B-channels. An 
example of this is Central Office provided ISDN-BRI. This type of BRI 
line is provisioned with separate listed directory numbers for each 
B-channel. In order to make a 2B multimedia call to such a device, two sets 
of addresses must be entered. 
The user goes off-hook and selects the mm-multinbr button. The user may 
select the mm-multinbr button and then go off-hook. If the user has a 
speakerphone on the station, the user may originate the call simply by 
selecting the mm-multinbr button. The speakerphone will automatically be 
placed off-hook and dialtone will be heard. Upon selection of the 
mm-multinbr button, the mm-multinbr and mm-call (if present) status lamp 
(green led) should become solid. The user now dials the first destination 
address digits. The destination address may be provided by dialing digits, 
using abbreviated dial entries, last number dialed, etc. The system will