Avaya Communication Manager Administrator's Manual page 359

Data Trunk Groups
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Data trunk groups may be used to carry H.320 calls of a fixed (administered) bearer
capability.
ISDN Trunk Groups
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Avaya 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 that can be used to
distinguish voice calls from multimedia calls.
Night Service
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Incoming H.320 calls follow established night-service processing for data calls.
Remote Access
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Communication Manager does not prevent Enhanced multimedia complexes from
attempting to use remote access. However, these endpoints will most likely not be able to
dial the necessary codes.
Station Hunting
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Multimedia calls to Enhanced mode complex voice stations that have an extension
administered in the hunt-to-station field hunt based on established hunting criteria. If the
hunt-to-station is also an Enhanced mode complex station, a multimedia call will result
when the call is answered.
Terminating Extension Groups
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A multimedia call to a TEG may be answered by any member of the TEG. If the member
answering the call is an Enhanced mode complex station, a multimedia call will result.
Telephone Display
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Display information for calls to or from an Enhanced multimedia complex contains the
display information associated with the voice station.
Troubleshooting
If one channel of a 2 B-channel call goes down, your choices are to continue with reduced
transmission quality, or to hang up the call and start over. It is not possible to re-establish the
second channel while the call is still active.
If you cannot share data with others, it may be that both parties do not have the same endpoint
software. This is true for some data collaboration, but most whiteboard and file transfer software
implementations are compatible.
Enhanced Mode MM Complex
Issue 1 June 2005 359