Lucent Technologies Definity Enterprise Communication Server 8.2 User Manual

Issue 1

April 2000

Managing multimedia calling 

279

Enhanced Mode MM complex 

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COR/COS

The Class of Restriction and Class of Service for a multimedia call 
originated from an Enhanced multimedia complex are those of the voice 
station in the complex.

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Data Call Setup

An Enhanced mode multimedia H.320 DVC system may not originate calls 
from the DVC system. All calls, both voice or video are originated from the 
voice station.

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Data Hotline 

An Enhanced multimedia complex H.320 DVC endpoint may not be used 
to originate a call for hotline dialing. In order to setup a video hotline 
function with an Enhanced mode complex, the hotline number 
administered for the voice station should include the Multimedia call 
feature access code.

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Data Trunk Groups

Data trunk groups may be used to carry H.320 calls of a fixed 
(administered) bearer capability. 

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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 that 
can be used to distinguish voice calls from multimedia calls.

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Night Service

Incoming H.320 calls follow established night-service processing for data 
calls. 

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Remote Access

The switch 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. 

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Station Hunting 

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.