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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Managing multimedia calling
264Enhanced Mode MM complex
9
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.