Lucent Technologies Definity Enterprise Communication Server 8.2 User Manual

Issue 1

April 2000

Managing multimedia calling 

204

Multimedia Applications Server Interface 

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— PRI interface for connecting an MMCX server to other 

public, private or WAN switching systems or equipment that is part of the 
public network. Similar to a DEFINITY trunk group. These may include 
non-MASI trunks connecting the DEFINITY ECS and the MMCX.

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 — The DEFINITY system representation of trunk or network 

facilities terminating on MMCX. For purposes of MASI, they are called 
“interfaces.” 

Before you start to administer MASI, you should make a plan for how to do it. 
Among the configurations on the following pages, there is probably one that 
matches the configuration of your system fairly closely. You might want to either 
write on these pages, or draw up your own configuration. It may help you if you 
have already determined trunk group and signaling group numbers, unused 
extensions, and so on. The following are things you need to consider: 

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Establish the dial plan on the MMCX to agree with that of the DEFINITY 
ECS. If you use Universal Dial Plan and MMCX, you may need to make 
adjustments for the MMCX dial plan. 

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Find unused extensions and trunk group numbers. You need:

— one trunk group number for each ISDN-PRI connection to the 

MMCX

— one signaling group number for each MASI node and an unused 

DEFINITY extension for the signaling group

— one unused DEFINITY extension for the Near-End Path 

Termination number for all MASI Paths to this ECS. You can use 
the same number for all MASI nodes in the domain.

— two unused MMCX extensions for the nearpath and tscnum 

arguments to the 

 command. This is the command you use 

to administer MASI on the MMCX. 

There are several ways to set up combinations of MASI nodes and DEFINITY 
servers.The following figures depict several possible configurations.