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
Managing multimedia calling 
267 Understanding the multimedia complex 
9
point with the mm-multinbr button or FAC. The user now dials one or two 
sets of destination address digits. The destination address may be provided 
by dialing digits, using abbreviated dial entries, last number dialed, etc. 
NOTE:
The mm-parameter selection FAC is generally used by stations that 
are part of an Enhanced multimedia complex, but may be used by any 
station to originate a dual address multimedia call.
7. Dialing sequences that include TACs, AAR, ARS, Authorization codes, 
CDR account codes, FRLs
1. Single address with TAC
nDial mm-call button or FAC, Hear dialtone
nDial TA C ,  Dial destination digits
2. Dual address with TAC
nDial mm-multinbr button or FAC, Hear dialtone
nDial TA C ,  Dial 1st dest. digits, Hear dialtone
nDial TA C ,  Dial 2nd dest. digits
3. Single address with AAR/ARS
nDial mm-call button or FAC, Hear dialtone
nDial AAR/ARS, Dial destination digits
4. Dual address with AAR/ARS
nDial mm-multinbr button or FAC, Hear dialtone
nDial AAR/ARS, Dial 1st dest. digits, Hear dialtone
nDial AAR/ARS, Dial 2nd dest. digits
5. Single address with AAR/ARS and authorization code
nDial mm-call button or FAC, Hear dialtone
nDial AAR/ARS FAC, Dial destination digits, Hear stutter 
dialtone
nDial authorization code
6. Dual address with AAR/ARS and authorization code
nDial mm-multinbr button or FAC, Hear dialtone
nDial AAR/ARS FAC, Dial 1st dest. digits, Hear dialtone
nDial AAR/ARS FAC, Dial 2nd dest. digits, Hear stutter 
dialtone
nDial authorization code 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
268 Understanding the multimedia complex 
9
7. Single address with TAC or AAR/ARS and CDR account code
nDial mm-call button or FAC, Hear dialtone
nDial CDR FAC, Hear dialtone
nDial CDR account code, Hear dialtone
nDial TAC or AAR/ARS, Dial destination digits
8. Dual address with TAC or AAR/ARS and CDR account code
nDial mm-multinbr button or FAC, Hear dialtone
nDial CDR FAC, Hear dialtone
nDial CDR account code, Hear dialtone
nDial TAC or AAR/ARS, Dial 1st dest. digits
nDial TAC or AAR/ARS, Dial 2nd dest. digits
Receiving voice calls. Any voice calls directed to the voice or data extension of 
a Basic multimedia complex will ring at the voice station.
Receiving multimedia calls. Any data calls directed to the voice or data 
extension of a Basic multimedia complex will ring at the multimedia equipped PC 
if it is available. You may answer the multimedia call at the PC and voice and 
video will connect to the PC. If the data endpoint is unavailable, the system 
verifies that the telephone of the complex is administered with the H.320 field set 
to y. If so, the system converts the call to voice and sends it to the telephone of the 
multimedia complex, where the call then alerts.
Hourglass Tone. When a voice station answers a converted multimedia call, the 
answering party may hear different things depending on the nature of the 
originator. If the origination is directly from an H.320 DVC system or if the 
originator 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 answering 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 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 answering 
party that they should wait for the H.320 call to establish audio. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
269 Understanding the multimedia complex 
9
Early Answer. The answering party may administer their station to avoid hearing 
hourglass tone. With the station form 
Early Answer field set to y, the system 
answers the incoming multimedia call on behalf of the station and establishes the 
H.320 protocol. After audio path has been established, the call will then alert at 
the voice station of the Basic complex destination. The station may then answer 
by going off-hook and will have immediate audio path. No hourglass tone will be 
heard by the answering party.
If the H.320 field is not set to y for the telephone of a Basic multimedia complex, 
H.320 calls alert at the multimedia endpoint until the caller drops. If an H.320 call 
is directed to a telephone with H.320 set to n, the system denies the call.
You can assign H.320 conversion to any voice station. 
Authorization. Multimedia complexes require the same types of authorization 
(COR/COS) as standard telephones. If a call is addressed to the voice extension, 
the system checks the COR/COS of the telephone, whether the call is voice-only 
or multimedia. If a call is addressed to the data extension, the system checks the 
COR/COS of the data endpoint. If the call is subsequently redirected to the voice 
station, the system does a second COR/COS check for the authorization of the 
voice station. Calls originated from the PC use the COR/COS of the voice station. 
Adjunct Switch Applications Interface . ASAI is not expected to support 
call-association for data calls. Therefore Lucent Technologies does not 
recommend that you use ASAI for multimedia. 
Administered Connections. Basic Multimedia endpoints may serve as the 
origination point or destination of an administered connection. 
Authorization and Barrier Codes. Basic Mode multimedia users or off-premises 
PC users may not be able to respond to prompts for authorization or barrier codes. 
Multimedia endpoints do not recognize the prompts. 
An on-premises user might be able to use Remote Access and enter the entire digit 
string at once before launching the call, but it would be better to eliminate the 
need for such codes for multimedia users who need to call off premises. 
Bridged Appearances. Voice users can bridge onto a call if the user has a 
bridged appearance of a voice member of the call. 
Call redirection. Calls directed to either member of the Basic multimedia 
complex are subject to redirection (coverage, forwarding). DEFINITY ECS 
converts calls to voice before sending them to coverage. Calls redirected through 
call forwarding maintain multimedia status if forwarded from the data endpoint.  
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
270 Understanding the multimedia complex 
9
Conferencing . A multimedia conference can consist of multimedia and 
voice-only conferees. All multimedia conferees are added to a multimedia 
conference by a voice-terminal user on the switch, who acts as the controller of 
the multimedia conference. When the controller is a Basic complex voice station, 
the controller must remain on the conference until all parties have joined. Once all 
endpoints are on the conference, the voice-terminal user may put the call on hold 
or drop, if the user wishes. 
Video conferees can see only their local video and one other party. If more than 
two people are involved in a video conference, the person who is speaking is the 
one whose video appears to other conferees. The speaker’s video shows the 
previous speaker. This changes dynamically as the speaker changes. 
Creating a multi-party video conference
All multimedia conferences must be controlled by a voice phone. Multimedia 
conferees may be added by calling the voice phone or by having the voice phone 
make a multimedia call to other DVC endpoints. The controller can then 
conference together individual parties to create a multimedia conference. 
To set up a multimedia conference:
 
1. Determine who is going to be the conference controller. 
2. At the appointed time, the conference controller calls his or her telephone 
from the multimedia endpoint by dialing the 1-number extension. Once this 
call is established, the controller conferences in other calls as if this were a 
voice conference. The controller continues to add conferees in this manner 
until all conferees have joined, or until the number of conferees reaches the 
administered limit. 
3. The conference controller may also add voice or multimedia parties to the 
conference spontaneously. The controller hits CONFERENCE, makes a 
voice or multimedia call to a new party. To make a multimedia call, the 
controller must originate a call using the mm-call button or FAC or the 
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. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
271 Understanding the multimedia complex 
9
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. 
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. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
272 Understanding the multimedia complex 
9
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 
FA C .  
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.
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. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
273 Understanding the multimedia complex 
9
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.
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.  
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
274 Understanding the multimedia complex 
9
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.
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. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
275 Understanding the multimedia complex 
9
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 
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. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing multimedia calling 
276 Understanding the multimedia complex 
9
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.
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.